GTAKE GK820 Series User Manual

High performance ac motor drives

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Thank you for choosing GTAKE GK820 Series High Performance AC Motor Drives. This user

manual presents a detailed description of GK820 series with respect to product features,

structural

characteristics,

commissioning and daily maintenance, etc. Be sure to carefully read through the safety

precautions before use, and use this product on the premise that personnel and equipment

safety is ensured.

⚫

Please assure the intactness of product enclosure and all safety covers before installation.

Operation must conform to the requirements of this manual and local industrial safety

regulations and/or electrical codes.

⚫

Contents of this manual may be subject to appropriate modification as a result of product

upgrade, specification change and update of the manual.

⚫

In the event of damage or loss of user manual, users may ask local distributors, offices or

our Technical Service Department for a new one.

⚫

If any item as stated in this manual is not clear, please contact our Technical Service

Department.

⚫

If any anomaly occurs after power up or during the operation, it is essential to stop the

machine and identify the fault or seek technical services as soon as possible.

⚫

Telephone number of our Technical Service Department: (+86) 0755-86392601.

Preface

functions,

installation,

IMPORTANT NOTES

parameter

setting,

troubleshooting,

Table of Contents

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Summary of Contents for GTAKE GK820 Series

Page 1 Preface Thank you for choosing GTAKE GK820 Series High Performance AC Motor Drives. This user manual presents a detailed description of GK820 series with respect to product features, structural characteristics, functions, installation, parameter setting, troubleshooting, commissioning and daily maintenance, etc. Be sure to carefully read through the safety precautions before use, and use this product on the premise that personnel and equipment safety is ensured.
Page 3: Table Of Contents
Table of Contents Preface ..........................- 1 - Chapter 1 Safety Precautions ..................- 1 - Safety Considerations ..................- 1 - Other Considerations ..................- 5 - Chapter 2 Product Information ..................- 7 - Model Explanation ................... - 7 - Nameplate Information ..................
Page 4 Control Terminal Specification ................ - 42 - Control Terminal Usage .................. - 44 - 3.10 Instruction of Signal Switches ................ - 53 - 3.11 EMI Solutions....................- 54 - Chapter 4 Operation and Run Instructions ..............- 57 - Operation of Control Panel ................- 57 - First-time Power up ..................
Page 5 Group d2 Vector Control Parameters of Motor 1 ..........- 208 - Group d3 Parameters of Motor 2 ................- 215 - Group d4 V/f Control Parameters of Motor 2 ............- 217 - Group d5 Vector Control Parameters of Motor 2 ..........- 218 - Group d6 Encoder Parameters ................- 219 - Group E Enhanced Function and Protection Parameters ..........- 223 - Group E0 Enhanced Function ................- 223 -...
Page 6 Chapter 8 Maintenance ....................- 279 - Routine Inspection ..................- 279 - Regular Maintenance ..................- 280 - Replacement of Vulnerable Parts ..............- 281 - Storage ......................- 282 - Appendix Communication Protocol ................- 284 - Networking Mode ....................- 284 - Interface Mode ....................- 284 - Communication Mode ..................- 284 - Protocol Format ....................- 285 - Protocol Function ....................- 287 -...
Page 7: Chapter 1 Safety Precautions
Users are requested to read this chapter carefully when installing, commissioning and repairing this product and perform the operation according to safety precautions as set forth in this chapter without violation. GTAKE bears no responsibility for any injury and loss as a result of any violation operation.
Page 8 Chapter 1 Safety Precautions GK820 User Manual This equipment must be mounted on metal or other flame retardant objects. Failure to comply ⚫ may result in fire. This equipment must be mounted in an area which is away from combustibles and heat ⚫...
Page 9 RA, RB, RC and TA, TB, TC. Failure to comply may result in equipment damage. ATTENTION Since all adjustable frequency AC drives from GTAKE have been subjected to hi-pot test ⚫ before delivery, users are prohibited from implementing such a test on this equipment.
Page 10 Make sure the number of phases of power supply and rated voltage are consistent with ⚫ product nameplate. If not, contact the seller or GTAKE. Check there are no short circuits in peripheral circuits connected with the drive, and ⚫...
Page 11: Other Considerations
If necessary, please use booster to rise or drop the voltage to regulated voltage range. This series of drives support common DC bus input. Users are suggested to consult GTAKE technical personnel before use. 1.2.2 Surge Protection This series of drives are furnished with surge suppressor that has certain resistance to lightning induction.
Page 12 Chapter 1 Safety Precautions GK820 User Manual recommended to use with the purpose of preventing drive fault as a result of overcurrent caused by excessive distributed capacitance. An output filter is optional depending on field requirements. Be sure not to mount phase-shifting capacitor or surge absorber at output side of the drive since this may result in drive damage as a result of over-temperature.
Page 13: Chapter 2 Product Information
GK820 User Manual Chapter 2 Product Information Chapter 2 Product Information 2.1 Model Explanation Model shown on product nameplate indicates the series name, applicable type of power supply, power class and the version of software and hardware, etc. via the combination of numbers, symbols and letters.
Page 14: Information Of Product Model
Chapter 2 Product Information GK820 User Manual 2.3 Information of Product Model Table 2-1 Product model and technical data □□□ ■ GK820-4T (B), three-phase 400V level Power Rated Rated Input Applicable Brake Model Rating Output current (A) motor (kW) chopper reactor (kW) Current (A)
Page 15 GK820 User Manual Chapter 2 Product Information * means brake chopper and DC reactor are optionally inbuilt. Take 30kW for example: the model without brake chopper and DC reactor is GK820-4T30, the model with brake chopper is GK820-4T30B, the model with DC reactor is GK820- 4T30D, and the model with brake chopper and DC reactor is GK820-4T30H.
Page 16: Technical Features Of Gk820
Chapter 2 Product Information GK820 User Manual 2.4 Technical Features of GK820 Table 2-2 Technical features of GK820 200V level: single/three phase 200V~240V Rated input voltage 400V level: three phase 380V~440V Frequency 50Hz/60Hz, tolerance ±5% Continuous voltage fluctuation ±10%, short fluctuation Power input -15%~+10%, i.e.
Page 17 GK820 User Manual Chapter 2 Product Information Positioning accuracy ±1 line pulse Start frequency 0.00~ 600.00Hz Accel/ 0.00~60000s Decel time Switching frequency 0.7kHz~16kHz Digital setting + control panel ∧/∨ Digital setting + terminal UP/DOWN Communication Frequency setting Analog setting (AI1/AI2/AI3) Terminal pulse setting Started from start frequency Motor start-up...
Page 18 Chapter 2 Product Information GK820 User Manual push-pull and differential, etc. Parameter copy, parameter backup, common DC bus, free switchover between two motors’ parameters, flexible parameter displayed & hidden, various master & auxiliary frequency reference and switchover, reliable speed search started, a variety of Accel/Decel curves programmable, automatic correction of analog, mechanical brake control, 16-step speed control programmable (2-step support flexible frequency reference), wobble frequency control, fixed length control, count function, three faults recorded,...
Page 19: Parts Drawing
GK820 User Manual Chapter 2 Product Information 2.5 Parts Drawing Base plate Base plate 底板风扇罩 Fan cover Mounting 安装孔 Mounting Fan cover holes holes 防尘盖板 Dust cover 下壳体 Lower casing 操作面板 Lower casing 铭牌盖板 Control panel Nameplate Nameplate 中壳体...
Page 20 Chapter 2 Product Information GK820 User Manual c) GK820-4T45(B)~ d) GK820-4T75(B) GK820-4T55(B) 风扇 Mounting holes 安装孔上盖板 Upper cover Enclosure 机箱托板 Panel bracket 操作面板 Control panel 铭牌 Nameplate 下盖板 Lower cover e) GK820-4T90~ GK820-4T500 Control panel 托板 bracket 机柜 Cabinet Control 操作面板...
Page 21: Appearance, Mounting Dimensions And Weight
GK820 User Manual Chapter 2 Product Information f) GK820-4T560 and GK820-4T630 Fig. 2-3 Parts drawing 2.6 Appearance, Mounting Dimensions and Weight a) GK820-4T22B and below - 15 -...
Page 22 Chapter 2 Product Information GK820 User Manual b) GK820-4T30(B/D/H) ~ GK820-4T37(B/D/H) c) GK820-4T45(B) ~ GK820-4T55(B) - 16 -...
Page 23 GK820 User Manual Chapter 2 Product Information d) GK820-4T75(B) e) GK820-4T90 ~ GK820-4T160 - 17 -...
Page 24 Chapter 2 Product Information GK820 User Manual f) GK820-4T185 ~ GK820-4T500 g) GK820-4T560 ~ GK820-4T630 Fig. 2-4 External dimensions - 18 -...
Page 25 GK820 User Manual Chapter 2 Product Information Table 2-3 Appearance, mounting dimensions and weight External and installation dimensions (mm) Weight Model Mounting (kg) (kg) hole dia. GK820-4T1.5B GK820-4T2.2B GK820-4T3.7B GK820-4T5.5B GK820-4T7.5B GK820-4T11B GK820-4T15B GK820-4T18.5B GK820-4T22B GK820-4T30(B) GK820-4T37(B) GK820-4T30D(H) 16.4 GK820-4T37D(H) GK820-4T45(B) GK820-4T55(B) GK820-4T75(B)
Page 26: External Dimensions Of Control Panel
Chapter 2 Product Information GK820 User Manual 2.7 External Dimensions of Control Panel Control panel model of GK820 series high performance AC motor drive is KBU-BX1 whose appearance and external dimensions are shown in Fig. 2-5. Fig. 2-5 External dimensions of KBU-BX1 2.8 External Dimensions of Control Panel Bracket...
Page 27: Chapter 3 Installation And Wiring
GK820 User Manual Chapter 3 Installation and Wiring Chapter 3 Installation and Wiring 3.1 Installation Environment 1) Ambient temperature is in the range of -10℃ to 40℃. 2) Drive should be installed on surface of flame retardant object, with adequate surrounding space for heat dissipation.
Page 28 Chapter 3 Installation and Wiring GK820 User Manual  ATTENTION: Remove dust covers when mounting a drive GK820-4T22B or below. If several drives are mounted in one cabinet, parallel side-by-side mounting is recommended. 空气流通位置 Vent clearance Vent clearance 空气流通位置 Fig. 3-2 Minimum mounting clearances of GK820-4T30(B/D/H)~ GK820-4T37(B/D/H) Vent clearance 空气流通位置...
Page 29: Remove & Mount Control Panel And Cover
GK820 User Manual Chapter 3 Installation and Wiring  ATTENTION: When mounting a drive GK820-4T30(B/D/H) or above, the minimum mounting clearances as set forth in Table 3-1 should be assured. In case several drives are mounted in one cabinet, parallel side-by-side mounting is recommended. Table 3-1 Requirement of minimum mounting clearances Mounting clearances (mm) Drive model...
Page 30 Chapter 3 Installation and Wiring GK820 User Manual Open the cover ⚫ Method 1: loosen the captive cover screws as shown in Fig. 3-6 a) (provided only for 15/18.5/22kW model), hold the left and front sides of middle housing with left hand, put the right thumb into the buckle and press tightly on cover with the other four fingers, pull the lower part of the cover out to release, as indicated by number "2".
Page 31 GK820 User Manual Chapter 3 Installation and Wiring Mount the control panel ⚫ Use the mounting method as stated in Section 3.3.1.  ATTENTION: Be sure to remove the control panel before opening the cover and mount the cover before mounting the control panel.
Page 32 Chapter 3 Installation and Wiring GK820 User Manual Mount the control panel ⚫ Use the mounting method as stated in Section 3.3.1.  ATTENTION: Be sure to remove the control panel before opening the cover and mount the cover before mounting the control panel.
Page 33 GK820 User Manual Chapter 3 Installation and Wiring Mount the upper cover ⚫ Insert the upper part of the cover into mounting groove as shown in Fig. 3-11 (left), close the upper cover, use cross screwdriver to tighten the four captive screws, as indicated by number “1”...
Page 34: Configuration Of Peripheral Devices
Chapter 3 Installation and Wiring GK820 User Manual 3.4 Configuration of Peripheral Devices 3.4.1 Standard Configuration of Peripheral Devices Power Supply Circuit Breaker or RCD Contactor Input AC Reactor Input Filter DC Choke AC Motor Drive Output Filter Braking resistor Output AC Reactor Motor Fig.
Page 35 Brake Purpose: consume motor feedback energy to attain quick brake chopper and Type selection: Contact GTAKE technical personnel for type selection of braking brake chopper. Refer to type selection of braking resistor in Table 3-3 resistor Selection of Peripheral Devices.
Page 36: Selection Of Peripheral Devices
Chapter 3 Installation and Wiring GK820 User Manual 3.4.3 Selection of Peripheral Devices Table 3-3 Selection of peripheral devices Braking resistor/Brake chopper * Circuit Contactor Drive model Resistance (Ω) breaker (A) Power (W) ≥100 GK820-4T1.5B ≥100 GK820-4T2.2B ≥75 GK820-4T3.7B ≥50 GK820-4T5.5B ≥50 GK820-4T7.5B...
Page 37 GK820 User Manual Chapter 3 Installation and Wiring stated in the table. Failure to comply may result in damage to the drive. Brake resistors are not built in and need to be procured additionally. The long-term exposure of the braking resistor may cause conductive dust to accumulate, resulting in a short circuit of the resistor to ground.
Page 38 3.4.4 External DC reactor installation and selection 3.4.4.1 Extermal DC reactor installation GK820 series frequency inverter 90kW to 500kW is configured with external DC reactor as default, and will be shipped to customer with separate wooden case together with the frequency inverter.User must connect the DC reactor between...
Page 39 GK820 User Manual Chapter 3 Installation and Wiring Table 3-4 External DC reactor dimension Mounting dimension (mm) Reactor Applicable model Mount Copper model hole bar hole MA4T903GL1 GK820-4T90 160 190 123 161 255 222 193 10X15 Ø12 GK820-4T110 BC-C00051D MA4T134GL1 GK820-4T132 160 190 123 161 255 222 193 10X15 Ø12...
Page 40: Terminal Configuration
Chapter 3 Installation and Wiring GK820 User Manual 3.5 Terminal Configuration Control circuit terminals Main circuit terminals Grounding terminals Fig. 3-14 Terminal configuration 3.6 Main Circuit Terminals and Wiring WARNING Only qualified personnel familiar with AC motor drives are allowed to implement wiring. ⚫...
Page 41 GK820 User Manual Chapter 3 Installation and Wiring ATTENTION Signal wires should be away from main power lines to the best of possibility. In the event ⚫ that this cannot be ensured, vertical cross arrangement should be adopted, reducing EMI interference to the signal wires as much as possible. In case the motor cable exceeds 100m, an appropriate output reactor should be ⚫...
Page 42 Chapter 3 Installation and Wiring GK820 User Manual * For 30kW～37kW drives without “B” or “H” in the model number, there is no built-in brake unit as factory default, brake resistor connected between BR and terminals is invalid. 3.6.3 Main Circuit Terminals of GK820-4T45(B)~GK820-4T55(B) Terminal marks Designation and function of terminals R/L1, S/L2, T/L3...
Page 43 GK820 User Manual Chapter 3 Installation and Wiring * For 75kW drives without “B” in the model number, there is no built-in brake unit as factory default, brake resistor connected between B1 and B2 terminals is invalid. 3.6.5 Main Circuit Terminals of GK820-4T90 ~ GK820-4T500 Terminal marks Designation and function of terminal R/L1、S/L2、T/L3...
Page 44 Chapter 3 Installation and Wiring GK820 User Manual 3.6.7 Terminal Screw and Wiring Requirement Table 3-5 Terminal screw and wiring requirement Power terminal Ground terminal Drive model Cable Torque Cable Torque Screw Screw (mm2) (kgf.cm) (mm2) (kgf.cm) GK820-4T1.5B 14±0.5 14±0.5 GK820-4T2.2B 14±0.5 14±0.5...
Page 45: Control Terminal Wiring
GK820 User Manual Chapter 3 Installation and Wiring Control Terminal Wiring WARNING Only qualified personnel familiar with AC motor drives are allowed to implement wiring. ⚫ Failure to comply may result in equipment damage and/or personnel injury even death. Wiring should be in strict accordance with this manual, otherwise hazard of electric shock ⚫...
Page 46: Control Board Diagram
Chapter 3 Installation and Wiring GK820 User Manual 3.7.1 Control Board Diagram Optional board interface 1 Optional board interface 2 Control panel 485 interface 扩展卡接口 1 操作面板 485 接口扩展卡接口 2 主信号接口 Main signal interface S1: Terminal resistor option for terminal communication 模...
Page 47: Wiring Diagram
GK820 User Manual Chapter 3 Installation and Wiring 3.7.2 Wiring Diagram Braking DC Reactor Resistor Circuit Breaker Contactor 2/B1 Jumper R/L1 U/T1 Three-phase S/L2 V/T2 Power Supply 380V 50/60Hz W/T3 T/L3 Power Supply Ground +24V Jumper Digital In 1 Digital In 2 Digital In 3 Digital In 4 CN2A...
Page 48: Control Terminal Specification
Chapter 3 Installation and Wiring GK820 User Manual Control Terminal Specification Table 3-6 Control terminal specification Category Terminal Terminal Specification designation 10.3V ±3% Analog input Maximum output current 25mA +10V reference The resistance of external potentiometer voltage should be larger than 400Ω Analog ground Isolated from COM interiorly 0~20mA: input impedance - 500Ω, maximum...
Page 49 GK820 User Manual Chapter 3 Installation and Wiring Category Terminal Terminal Specification designation 24V±10%, Isolated from GND interiorly +24V +24V Maximum load: 200mA Used for switching between high and low Digital input levels, short-circuited with +24V when delivery, Common i.e. low value of digital input valid terminal External power input Digital...
Page 50: Control Terminal Usage
Chapter 3 Installation and Wiring GK820 User Manual Category Terminal Terminal Specification designation Encoder Select differential/OC input mode by S7 signal Phase input B- In OC mode, this terminal is directly connected input to phase B signal of the encoder Differential signal Rate: 485+...
Page 51: Dry Contact
GK820 User Manual Chapter 3 Installation and Wiring 3.9.3 Instructions of Analog Input/Output Terminals Being particularly vulnerable to noise, analog input & output signals cables should be as short as possible, shielded, and their shielded layers should be properly grounded, close to the side of drive.
Page 52 Chapter 3 Installation and Wiring GK820 User Manual +24V Drive External +3.3V 20~30V Controller Opto-isolator +3.3V Opto-isolator X7/DI Shielded Cable Near-end Ground Fig. 3-19 External power supply dry contact ATTENTION:  When external power supply is used, the jumper between +24V and PLC must be removed. Otherwise, it may result in equipment damage.
Page 53 GK820 User Manual Chapter 3 Installation and Wiring +24V Drive External +3.3V 20~30V Contoller Opto-isolator +3.3V Opto-isolator X7/DI Shielded Cable Near-end Ground Fig. 3-21 External power supply open collector NPN connection  ATTENTION: When external power supply is utilized, the jumper between +24V and PLC must be removed.
Page 54 Chapter 3 Installation and Wiring GK820 User Manual  ATTENTION: When PNP connection is adopted, it is necessary to remove the jumper between +24V and PLC, and connect the jumper to PLC and COM. External +24V Controller Drive +3.3V 20~30V Opto-isolator +3.3V Opto-isolator...
Page 55 ◆ Wiring instruction of relay output terminal Control boards of GK820 series drives are provided with two programmable relay dry contact outputs. One relay contacts are RA/RB/RC, whose RA and RB are normally closed while RA and RC are normally open.
Page 56 Chapter 3 Installation and Wiring GK820 User Manual GK820 series drives without the optional boards also support the following three types of encoders. Type of open collector output ◆ Select the first position of toggle switch from the left according to the power supply of selected encoder.
Page 57 GK820 User Manual Chapter 3 Installation and Wiring Select the first position of toggle switch from the left according to the power supply of selected encoder. Slide up for 12V power supply, and slide down for 5V power supply. The #2 and #3 positions from the left are for selection of signal type.
Page 58 Chapter 3 Installation and Wiring GK820 User Manual ◆ Differential output type Select the first position of toggle switch from the left according to the power supply of selected encoder. Slide up for 12V power supply, and slide down for 5V power supply. The #2 and #3 positions from the left are for selection of signal type.
Page 59: Instruction Of Signal Switches
GK820 User Manual Chapter 3 Installation and Wiring It is recommended to apply chain connection as Fig. 3-31 (“one-to-many” star connection cannot be applied) between RS485 communication nodes of the drive and host computer etc. Try to lay 485 communication cables away from power cables and machine cabinets. There should be at least three cables as RS485 communication bus: two paired cables which can effectively resist outside noise interference is used to connect 485 signal terminal;...
Page 60: Emi Solutions
Chapter 3 Installation and Wiring GK820 User Manual Fig. 3-33 Jumper diagram of signal switch Default Designation Function setting Selection of 485 termination resistor; ON :100Ω termination resistor provided; OFF: no termination resistor Type selection of AI1 analog signal: V: 0~10V I: current input (0~20mA);...
Page 61 GK820 User Manual Chapter 3 Installation and Wiring ⚫ When peripheral equipment and drive share the power supply of one system, noise from drive may be transmitted to other equipment in this system via power lines and result in misoperation and/or faults. In such a case, the following measures could be taken: Mount input noise filter at input terminal of the drive;...
Page 62 Chapter 3 Installation and Wiring GK820 User Manual turns into a noise source that may influence other equipment in the system, thus, grounding terminals of the drive and other vulnerable equipment should be separated. Grounding cable shall be kept away from inlet & output of noise-sensitive equipment. 3.11.3 Leakage Current Suppression ⚫...
Page 63: Chapter 4 Operation And Run Instructions
GK820 User Manual Chapter 4 Operation and Run Instructions Chapter 4 Operation and Run Instructions 4.1 Operation of Control Panel As a human-machine interface, control panel is the main part for the drive to receive command and display parameters. Fig. 4-1 Control Panel 4.1.1 Key Functions on Control Panel On control panel there are 8 keys whose functions are as shown in Table 4-1.
Page 64 Chapter 4 Operation and Run Instructions GK820 User Manual Symbol Key name Meaning 1) Stop Stop/reset key 2) Fault reset Multi-function See Table 4-2 " MF key function definition" Table 4-2 MF key function definition L0-00 set Function of MF key Meaning value Disabled...
Page 65: Control Panel Indicators
GK820 User Manual Chapter 4 Operation and Run Instructions 4.1.2 Control Panel Indicators Control panel is furnished with 7 indicators whose descriptions are as below Table 4-3 Description of indicators Indicator Designation Meaning ON: currently displayed parameter value is running frequency or the current parameter unit Frequency indicator is frequency Flash: currently displayed parameter value is set...
Page 66 Chapter 4 Operation and Run Instructions GK820 User Manual 4.1.3.1 Display of STOP Parameters The drive normally gets into STOP parameters display once run has been stopped. By default, set frequency is displayed in such a status, and other parameters can be displayed through setting of L1-02 parameters and the key.
Page 67 GK820 User Manual Chapter 4 Operation and Run Instructions Fig. 4-3 Run parameter display status (Displaying run frequency – 50.00Hz) Stop status will be enabled immediately upon receipt of stop command in such a status. Press to get into parameter edit status (get into password authentication status if parameter under password protection).
Page 68 Chapter 4 Operation and Run Instructions GK820 User Manual 4.1.3.4 Parameter Edit Status Enter parameter edit status immediately upon pressing in STOP status, run parameters display status, and direct frequency modification status. This status could also be entered upon receipt of consecutive twice pressing in fault display status.
Page 69 GK820 User Manual Chapter 4 Operation and Run Instructions 4.1.3.6 Password Authentication Status On condition that parameters are under password protection, users would have to go through password authentication when they want to modify function code parameter value. Only A0-00 is visible in such a state.
Page 70 Chapter 4 Operation and Run Instructions GK820 User Manual 4.1.3.8 Prompt Message Status Prompt message status shall be displayed at the completion of some certain operations. For instance, the “bASIC” prompt message would be displayed upon the completion of parameter initialization.
Page 71 GK820 User Manual Chapter 4 Operation and Run Instructions Control panel locked 4 LoC-4 Drive undervoltage (all locked except shift PrtCt Control panel protection CLr-F Clear fault record Restore to factory default UnLoC Control panel lock cleared dEFt1 parameters (motor parameter excluded) Restore to factory default Read the backup parameter value to...
Page 72: Parameter System
Chapter 4 Operation and Run Instructions GK820 User Manual 4.1.4 Setting Method of Parameters 4.1.4.1 Parameter System GK600 series drive parameter group: A0~A1, b0~b2, C0~C4, d0~d5, E0~E1, F0~F3, H0~H1, L0~L1, U0~U1. Each parameter group contains a number of parameters. Parameters are identified by the combination “parameter group character + parameter subgroup number + parameter number”.
Page 73 GK820 User Manual Chapter 4 Operation and Run Instructions Second-tier display shown in Fig. 4-10: Fig. 4-10 Second-tier display of parameter (“3” is the value of b0-00) 4.1.4.3 Example of Setting of Parameter Parameter values are divided into decimal (DEC) and hexadecimal (HEX) values. When a parameter value is expressed by a hexadecimal, all its bits are independent of each other during edition and the range of value would be (0~F).
Page 74 Chapter 4 Operation and Run Instructions GK820 User Manual Flow chart of user password setting: ▲ A0-00 50.00 50.00 0.0.0.0 0.0.0.6 50.00 >> ▼ ▲ A0-00 A0-01 1.0.0.6 0.0.0.6 A0-00 Escape modification 放弃修改 ▲ ▲ >> 0.0.0.0 0.0.0.6 0.0.0.6 1.0.0.6 50.00 A0-01 Fig.
Page 75 GK820 User Manual Chapter 4 Operation and Run Instructions 10) Press for five times to change “0” to “5”; 11) Press to save the value (50.00) of b0-09. Then the control panel will automatically switch to display the next function code (b0-10); 12) Press to exit parameter edit status.
Page 76 Chapter 4 Operation and Run Instructions GK820 User Manual ◆ Example 3: setting method of hexadecimal parameter Take L1-02 (LED STOP display parameter) for example, if LED control panel is required to display: setting frequency, bus voltage, AI1, running linear speed, and setting linear speed. Since all bits are independent of each other, the ones place, tens place, hundreds place and thousands place should be set separately.
Page 77 GK820 User Manual Chapter 4 Operation and Run Instructions Set the value in hundreds place: As shown in Fig. 4-14, the parameter required to display does not involve hundreds place, so the hundreds place shall be set to zero. Set thousands place: As shown in Fig.
Page 78 Chapter 4 Operation and Run Instructions GK820 User Manual change the value of parameter L0-01. In other words, control panel will be locked again if the condition of locking control panel is fulfilled. To unlock control panel completely, L0-01 value must be modified to 0 after unlocking. Refer to flow chart 4- 16 of unlocking control panel ▲...
Page 79: First-Time Power Up
GK820 User Manual Chapter 4 Operation and Run Instructions 4.2 First-time Power up Perform wiring in strict accordance with technical requirements as set forth in Chapter 3 – Installation and Wiring. 4.2.1 Flow chart of first-time power up of asynchronous motor Ready Make sure power lines are connected to R, S, T...
Page 80 Chapter 4 Operation and Run Instructions GK820 User Manual 4.2.2 Flow chart of first-time power up of synchronous motor Ready Make sure power lines are connected to R,S,T Make sure motor lines are connected to U,V,W A0-03=3 restored to factory default d0-00=2 Set parameters d0-01~d0-06...
Page 81: Chapter 5 List Of Parameters
GK820 User Manual Chapter 5 List of Parameters Chapter 5 List of Parameters GK820 parameter groups are listed below: Category Parameter Group Reference Page A0: System Parameters P73; P126 Group A: System Parameters A1: User-defined Display Parameters and Parameter Management P74;...
Page 82 Chapter 5 List of Parameters GK820 User Manual  ATTENTION: Change attribute: "△" means the value of this parameter can be modified in stop and run status of drive; "×" means the value of this parameter cannot be modified when drive is running; "◎"...
Page 83 GK820 User Manual Chapter 5 List of Parameters Factory Param. Designation Scope Attr Default 0: Supplied by DC bus voltage of drive Power supply type of ◎ A0-07 main circuit SMPS 1: Supplied independently Motor 1 / motor 2 0: Motor 1 A0-08 ×...
Page 84 Chapter 5 List of Parameters GK820 User Manual Factory Param. Designation Scope Attr Default User-defined Display A1-12 A0-00 × Parameter 13 User-defined Display A1-13 A0-00 × Parameter 14 User-defined Display A1-14 A0-00 × Parameter 15 User-defined Display A1-15 A0-00 × Parameter 16 User-defined Display A1-16...
Page 85 GK820 User Manual Chapter 5 List of Parameters Factory Param. Designation Scope Attr Default Group b: Run Parameter Setting Group b0: Frequency Reference 0: Master frequency reference 1: Master & auxiliary computation result 2: Switch between master and auxiliary frequency reference 3: Switch between master frequency b0-00 FREQ reference mode ×...
Page 86 Chapter 5 List of Parameters GK820 User Manual Factory Param. Designation Scope Attr Default Digital setting of auxiliary Lower limit frequency ~ upper limit △ b0-04 0.00Hz FREQ reference frequency 0: Relative to maximum frequency b0-05 Auxiliary FREQ range × 1: Relative to master frequency b0-06 Auxiliary FREQ coeff 0.0%~100.0%...
Page 87 GK820 User Manual Chapter 5 List of Parameters Factory Param. Designation Scope Attr Default Ones place: frequency reference source bundled under control panel control: 0: No binding 1: Digital setting (b0-02) + control panel ∧/∨ adjustment 2: Digital setting (b0-02) + terminal UP/DOWN adjustment 3: Analog input AI1 4: Analog input AI2...
Page 88 Chapter 5 List of Parameters GK820 User Manual Factory Param. Designation Scope Attr Default DC braking current at 0.0%~200.0% △ b1-08 0.0% start b1-09 DC braking time at start 0.00s~30.00s △ 0.00s b1-10 Flying Start 1 Current 0.0%~200.0% 100.0% × b1-11 Flying Start 1 Decel Time 0.1s~20.0s 2.0s ×...
Page 89 GK820 User Manual Chapter 5 List of Parameters Factory Param. Designation Scope Attr Default 0s~600.00s/6000.0s/60000s b2-10 Jog Accel time △ 6.0s 0s~600.00s/6000.0s/60000s △ b2-11 Jog Decel time 6.0s 0: Linear Accel/Decel 1: Broken-line Accel/Decel b2-12 Accel/Decele curve 2: S-curve Accel/Decel A ×...
Page 90 Chapter 5 List of Parameters GK820 User Manual Factory Designation Scope Param. Attr Default Group C: Input & Output Terminals Group C0: Digital Input Enabled condition of run 0: Trigger edge detected + ON C0-00 command terminals detected × when power up 1: ON detected 0: No function C0-01 Function of terminal X1...
Page 91 GK820 User Manual Chapter 5 List of Parameters Factory Designation Scope Param. Attr Default 31: Master FREQ reference switched to digital setting b0-02 32: Auxiliary FREQ reference switched to digital setting b0-04 33: PID adjustment direction 34: PID paused 35: PID integration paused 36: PID parameter switch 37: Count input 38: Count clear...
Page 92 Chapter 5 List of Parameters GK820 User Manual Factory Designation Scope Param. Attr Default Filtering time of digital △ C0-11 0.000s~1.000s 0.010s input terminal △ C0-12 Delay time of terminal X1 0.0s~3600.0s 0.0s △ C0-13 Delay time of terminal X2 0.0s~3600.0s 0.0s Ones place: X1 0: Positive logic...
Page 93 GK820 User Manual Chapter 5 List of Parameters Factory Designation Scope Param. Attr Default 0: Two-wire mode 1 FWD/REV terminal 1: Two-wire mode 2 C0-19 × control mode 2: Three-wire mode 1 3: Three-wire mode 2 000~77F 0: Actual terminal in effect Option of virtual input 1: Virtual terminal in effect C0-20...
Page 94 Chapter 5 List of Parameters GK820 User Manual Factory Designation Scope Param. Attr Default Group C1: Digital Output 0: No output △ C1-00 Y1 output function 1: Drive undervoltage Y2/DO output function △ C1-01 2: Drive run preparation completed (when used as Y2) 3: Drive is running △...
Page 95 GK820 User Manual Chapter 5 List of Parameters Factory Designation Scope Param. Attr Default △ C1-05 Y2 output delay time 0.0s~3600.0s 0.0s C1-06 Relay 1 output delay time 0.0s~3600.0s △ 0.0s C1-07 Relay 2 output delay time 0.0s~3600.0s △ 0.0s Ones place: Y1 0: Positive logic 1: Negative logic...
Page 96 Chapter 5 List of Parameters GK820 User Manual Factory Param. Designation Scope Attr Default Group C2: Analog and Pulse Input Ones place: AI1 input curve 0: Curve 1 (2 points) 1: Curve 2 (4 points) 2: Curve 3 (4 points) 3: Curve 2 and Curve 3 switchover C2-00 Analog input curve 0210...
Page 97 GK820 User Manual Chapter 5 List of Parameters Factory Param. Designation Scope Attr Default Set value corresponding to △ input of curve 3 inflection point Range: -100.0%~100.0% C2-16 0.0% Range: curve 3 minimum input~ input Input of curve 3 inflection △...
Page 98 Chapter 5 List of Parameters GK820 User Manual Factory Param. Designation Scope Attr Default Group C3: Analog and Pulse Output 0: No output △ C3-00 AO1 output function 1: FREQ reference △ C3-01 AO2 output function 2: Output frequency 3: Output current 4: Output torque 5: Output voltage 6: Output power...
Page 99 GK820 User Manual Chapter 5 List of Parameters Factory Param. Designation Scope Attr Default △ C3-11 DO output filtering time 0.00s~10.00s 0.00s Group C4: Automatic Correction of Analog Input 0: No correction 1: Correct AI1 C4-00 Analog corrected channel × 2: Correct AI2 3: Correct AI3 Sampling value of AI1...
Page 100 Chapter 5 List of Parameters GK820 User Manual Factory Param. Designation Scope Attr Default Model d0-03 Rated current of motor 1 0.0A~6553.5A × dependent Rated frequency of motor d0-04 0.00Hz~maximum frequency 50.00Hz × d0-05 Pole number of motor 1 1~80 ×...
Page 101 GK820 User Manual Chapter 5 List of Parameters Factory Param. Designation Scope Attr Default Initial angle of synch 0.0° d0-20 0.0° ~360.0° × motor 1 Z-pulse initial angle of 0000 d0-21 0000~FFFF × synch motor 1 0: No autotune 1: Static autotune of async motor d0-22 Autotune of motor 1 2: Rotary autotune of async motor ×...
Page 102 Chapter 5 List of Parameters GK820 User Manual Factory Param. Designation Scope Attr Default △ d1-10 Slip compensation gain 0.0%~400.0% 100.0% △ d1-11 Droop control 0.00Hz~10.00Hz 0.00Hz 0: Disabled 1: Set by d1-13 2: Set by AI1 d1-12 Current limitation mode ×...
Page 103 GK820 User Manual Chapter 5 List of Parameters Factory Param. Designation Scope Attr Default △ d2-11 Pre-excitation time 0.000s~5.000s 0.200s 0: d2-14 digital setting 1: AI1 Driven torque restriction 2: AI2 d2-12 × 3: AI3 source 4: X7/DI pulse input 5: Communication 0: d2-15 digital setting 1: AI1...
Page 104 Chapter 5 List of Parameters GK820 User Manual Factory Param. Designation Scope Attr Default 3: AI3 4: X7/DI pulse input 5: Communication Forward speed limited d2-23 value under torque 0.00Hz ~maximum frequency 50.00Hz × control Reverse speed limited d2-24 value under torque 0.00Hz ~maximum frequency 50.00Hz ×...
Page 105 GK820 User Manual Chapter 5 List of Parameters Factory Param. Designation Scope Attr Default Leakage inductance L1 of Model d3-08 0.1mH~6553.5mH × async motor 2 dependent Rotor resistance R2 of Model 0.001Ω~65.535Ω d3-09 × async motor 2 dependent Mutual inductance L2 of Model d3-10 0.1mH~6553.5mH...
Page 106 Chapter 5 List of Parameters GK820 User Manual Factory Param. Designation Scope Attr Default 0: No protection Overload protection d3-23 1: Judged by motor current × mode of motor 2 2: Judged by temperature transducer Overload protection 0.1min~15.0min 5.0min × d3-24 detection time of motor 2 0: AI1...
Page 107 GK820 User Manual Chapter 5 List of Parameters Factory Param. Designation Scope Attr Default Current limit coeff on flux △ d4-14 0.001~1.000 0.500 weakening Energy saving △ d4-15 0%~40.0% 0.0% percentage V/f oscillation △ d4-16 0~3000 suppression gain 1 V/f oscillation △...
Page 108 Chapter 5 List of Parameters GK820 User Manual Factory Param. Designation Scope Attr Default 4: X7/DI pulse input 5: Communication Digital setting of driven △ d5-14 0.0%~200.0% 180.0% torque limit value Digital setting of braking △ d5-15 0.0%~200.0% 180.0% torque limit value Torque limit coefficient in △...
Page 109 GK820 User Manual Chapter 5 List of Parameters Factory Param. Designation Scope Attr Default time Static friction torque △ d5-26 0.0%~100.0% 0.0% compensation Sliding friction torque △ d5-27 0.0%~100.0% 0.0% compensation Rotary inertia △ d5-28 0.000~1.000 0.000 compensation coeff Group d6: Encoder Parameters Ones place: motor 1 speed feedback encoder option 0: encoder 1 (local)
Page 110 Chapter 5 List of Parameters GK820 User Manual Factory Param. Designation Scope Attr Default Tens place: UVW direction 0: Forward 1: Reverse Numerator of the ratio of × d6-09 motor speed to encoder 2 1~65535 1000 speed Denominator of the ratio ×...
Page 111 GK820 User Manual Chapter 5 List of Parameters Factory Param. Designation Scope Attr Default ≥90kW: 0.7kHz~3.0kHz, factory default: 2.0 kHz Ones place: switching FREQ adjusted with temperature 0: Self-adaption 1: No adjustment Tens place: PWM modulation mode 0: Five-segment and seven-segment automatic switchover 1: Five-segment mode 2: Seven-segment mode...
Page 112 Chapter 5 List of Parameters GK820 User Manual Factory Param. Designation Scope Attr Default Mechanical brake open E0-07 0.0%~200.0% 120.0% × current Accel delay time after E0-08 0.0s~10.0s 1.0s × brake open Mechanical brake E0-09 0.00Hz~10.00Hz 2.00Hz × frequency Mechanical brake close E0-10 0.0s~10.0s 0.0s...
Page 113 GK820 User Manual Chapter 5 List of Parameters Factory Param. Designation Scope Attr Default 1: Alarm but run continued Thousands place: abnormal terminal communication (TrC) 0: Alarm and coast to stop 1: Alarm but run continued Ones place: abnormal power supply at run (SUE) 0: Alarm and coast to stop 1: Alarm but run continued...
Page 114 Chapter 5 List of Parameters GK820 User Manual Factory Param. Designation Scope Attr Default 1: Action enabled 0: Auto run △ E1-12 Cooling fan control 1: Always run after power up Drive overheat alarm E1-13 0.0℃~100.0℃ 80.0℃ △ threshold Group F Application Parameters Group F0: Process PID 0: F0-01 digital setting 1: AI1...
Page 115 GK820 User Manual Chapter 5 List of Parameters Factory Param. Designation Scope Attr Default F0-09 Integration time Ti1 0.000s~50.000s 0.500s △ △ F0-10 Derivative time Td1 0.000s~50.000s 0.000s △ F0-11 Proportional gain Kp2 0.0~200.0 50.0 △ F0-12 Integration time Ti2 0.000s~50.000s 0.500s △...
Page 116 Chapter 5 List of Parameters GK820 User Manual Factory Param. Designation Scope Attr Default Group F1: Multi-step Frequency 0: Digital setting F1-02 1: Digital setting b0-02 + control panel ∧/ ∨ adjustment 2: Digital setting b0-02 + terminal UP/DOWN adjustment FREQ set source of F1-00 3: AI1...
Page 117 GK820 User Manual Chapter 5 List of Parameters Factory Param. Designation Scope Attr Default F1-16 Multi-step FREQ 14 -100.0%~100.0% 0.0% △ F1-17 Multi-step FREQ 15 -100.0%~100.0% 0.0% △ Group F2: Simple PLC Ones place: PLC run mode 0: Stop after a single cycle 1: Continue to run with the last FREQ after a single cycle 2: Cycle repeated...
Page 118 Chapter 5 List of Parameters GK820 User Manual Ones place: FREQ reference 0: Multi-step FREQ 1 (F1-03) 1~7: Same as F2-01 F2-03 Setting of step 1 × Tens place: run direction (same as F2-01) Hundreds place: Accel/Decel time option (same as F2-01) △...
Page 119 GK820 User Manual Chapter 5 List of Parameters Ones place: FREQ reference 0: Multi-step FREQ 7 (F1-09) 1~7: Same as F2-01 F2-15 Setting of step 7 × Tens place: run direction (same as F2-01) Hundreds place: Accel/Decel time option (same as F2-01) △...
Page 120 Chapter 5 List of Parameters GK820 User Manual Ones place: FREQ reference 0: Multi-step FREQ 12 (F1-14) 1~7: Same as F2-01 F2-25 Setting of step 12 Tens place: run direction (same as F2- × Hundreds place: Accel/Decel time option (same as F2-01) △...
Page 121 GK820 User Manual Chapter 5 List of Parameters Factory Param. Designation Scope Attr Default Group F3: Wobble Frequency and Fixed Length Count Wobble FREQ function 0: Wobble FREQ function disabled F3-00 × setting 1: Wobble FREQ function enabled Ones place: started method 0: Automatically 1: Started by terminal Tens place: amplitude control...
Page 122 Chapter 5 List of Parameters GK820 User Manual Factory Param. Designation Scope Attr Default Group F4: Position Control 0: Non-position control 1: Zero-speed clamping (FREQ attained valid) F4-00 Position control mode × 2: Zero-speed clamping (terminal enabled) 5: Pulse train position control Positioning complete F4-01 0~3000...
Page 123 GK820 User Manual Chapter 5 List of Parameters Factory Param. Designation Scope Attr Default Denominator of △ F4-35 1~30000 1000 electronic gear ratio △ F4-36 Feed-forward gain 0.000~7.000 1.000 Feed-forward filtering △ F4-37 0.000s~7.000s 0.001s time Position offset change F4-38 0~9999 ×...
Page 124 Chapter 5 List of Parameters GK820 User Manual Factory Param. Designation Scope Attr Default 0: Not saved at power loss 1: Saved at power loss Local address of SCI port H0-02 0~247, 0 is broadcast address × communication Time out detection of SCI H0-03 0.0s~1000.0s 0.0s...
Page 125 GK820 User Manual Chapter 5 List of Parameters Factory Param. Designation Scope Attr Default 0: none PZD8_OUT 0x6200~0x6214 H1-08 △ (master → slave) 0: none PZD9_OUT 0x6200~0x6214 H1-09 △ (master → slave) 0: none PZD10_OUT 0x6200~0x6214 H1-10 △ (master → slave) 0: none PZD2_IN A0-00~U2-xx...
Page 126 Chapter 5 List of Parameters GK820 User Manual Factory Param. Designation Scope Attr Default Group L Keys and Display of Control panel Group L0: Keys of Control panel 0: No function 1: Forward jog 2: Reverse jog 3: Forward/reverse switchover L0-00 MF key setting △...
Page 127 GK820 User Manual Chapter 5 List of Parameters Factory Param. Designation Scope Attr Default Group L1: Control Panel Display Setting Binary system setting: 0: No Display 1: Display Ones place: BIT0: Run FREQ (Hz) BIT1: FREQ reference (Hz) BIT2: Bus voltage (V) BIT3: Output current (A) Tens place: BIT0: Output torque (%)
Page 128 Chapter 5 List of Parameters GK820 User Manual Factory Param. Designation Scope Attr Default BIT1: Reserved BIT2: Reserved BIT3: Reserved Thousands place: reserved Binary system setting: 0: No Display 1: Display Ones place: BIT0: FREQ reference (Hz) BIT1: Bus voltage (V) BIT2: Input terminal status BIT3: Output terminal status Tens place:...
Page 129 GK820 User Manual Chapter 5 List of Parameters Factory Param. Designation Scope Attr Default 0: Digital setting + adjustment through ∧/∨ on control panel 1: Digital setting + terminal UP/DOWN adjustment 2: Analog input AI1 3: Analog input AI2 4: Analog input AI3 Master FREQ reference 5: X7/DI pulse input ◎...
Page 130 Chapter 5 List of Parameters GK820 User Manual Factory Param. Designation Scope Attr Default 2: Position control ◎ U0-12 AI1 input voltage 0.00V~10.00V 0.00V ◎ U0-13 AI2 input voltage 0.00V~10.00V 0.00V ◎ U0-14 AI3 input voltage -10.00V~10.00V 0.00V ◎ U0-15 AO1 output 0.0%~100.0% 0.0% ◎...
Page 131 GK820 User Manual Chapter 5 List of Parameters Factory Param. Designation Scope Attr Default 0: No fault 1: U-phase current detection circuit fault ◎ U0-39 CtC fault source 2: V-phase current detection circuit fault 3: W-phase current detection circuit fault Higher-bit numbers of ◎...
Page 132 Chapter 5 List of Parameters GK820 User Manual Factory Param. Designation Scope Attr Default Group U1: History Fault 0: No fault 1: Accel overcurrent (oC1) 2: Constant-speed overcurrent (oC2) 3: Decel overcurrent (oC3) 4: Accel overvoltage (ov1) 5: Constant-speed overvoltage (ov2) 6: Decel overvoltage (ov3) 7: Module protection (FAL) 8: Autotune failed (tUN)
Page 133 GK820 User Manual Chapter 5 List of Parameters Factory Param. Designation Scope Attr Default 32: Control panel communication abnormal (PdC) 33: Parameter copy fault (Cpy) 34: Reserved 35: Software version compatibility fault (SFt) 36: CPU interference as a fault (CPU) 37: Overcurrent benchmark error (oCr) 38: 5V power supply out-of-limit (SP1) 39: 10V power supply out-of-limit (SP2)
Page 134 Chapter 5 List of Parameters GK820 User Manual Factory Param. Designation Scope Attr Default Output terminal status at ◎ U1-16 0000~FFFF 0000 fault 2 Cumulative run time at ◎ U1-17 0h~65535h fault 2 ◎ U1-18 Code of fault 3 Same as U1-00 ◎...
Page 135: Chapter 6 Specification Of Parameters
GK820 User Manual Chapter 6 Specification of Parameters Chapter 6 Specification of Parameters Group A System Parameters and Parameter Management Group A0 System Parameters Factory default: A0-00 Setting of user password Range: 0000~FFFF 0000 Setting of password: A non-zero four-digital number could be set as a user password by entering this password into A0-00 and pressing ENT key to confirm once, then reenter and reconfirm it once again within 10 seconds.
Page 136 Chapter 6 Specification of Parameters GK820 User Manual Factory default: A0-03 Parameter initialization Range: 0~4 0: No operation 1: Clear fault record When this parameter is set to 1, all fault record of Group U1 will be cleared. 2: Restore all parameters to factory default (excluding motor parameters) 3: Restore all parameters to factory default (including motor parameters) 4: Restore all parameters to backup parameters Factory default:...
Page 137 GK820 User Manual Chapter 6 Specification of Parameters Table 6-1 Motor 1/2 switchover A0-08 Motor selection terminal Motor 1 Motor 2 Motor 2 Motor 1 Factory default: A0-09 Motor control technique Range: 00~33 ◆ Ones place: motor 1 control technique 0: V/f control Constant Volt/Hertz ratio control: Applicable to such cases in which the performance requirement to the drive is not rigorous, or using one drive to drive several motors, or it is...
Page 138 Chapter 6 Specification of Parameters GK820 User Manual need to set related parameters group d1 well. 1: Sensor-less vector control 1 This helps achieve high-performance control without encoder and provides strong adaptability of load. Under this selection, please correctly set motor parameters of Group d0 and vector control parameters of Group d2.
Page 139: Group A1 User-Defined Display Parameters
GK820 User Manual Chapter 6 Specification of Parameters Group A1 User-defined Display Parameters User-defined displayed Factory default: A1-00 Range: A0-00~U1-26 parameter 1 A0-00 User-defined displayed Factory default: Range: A0-00~U1-26 A1-01 parameter 2 A0-00 User-defined displayed Factory default: Range: A0-00~U1-26 A1-02 parameter 3 A0-00 User-defined displayed...
Page 140 Chapter 6 Specification of Parameters GK820 User Manual User-defined displayed Factory default: Range: A0-00~U1-26 A1-18 parameter 19 A0-00 User-defined displayed Factory default: Range: A0-00~U1-26 A1-19 parameter 20 A0-00 A1-00~A1-19 set values would not take effect unless A0-01 is set to 2 Setting range of thousands place: A, b, C, d, E, F, H, L, U Setting range of hundreds place: 0~9;...
Page 141: Group B Run Parameter Setting
GK820 User Manual Chapter 6 Specification of Parameters Table 6-3 bit15 bit14 bit13 bit12 bit11 bit10 bit9 bit8 bit7 bit6 bit5 bit4 bit3 bit2 bit1 bit0  ATTENTION: Parameters of Groups A0 and A1 are always displayed and are not subject to A1-20 and A1-21 show/hide control.
Page 142 Chapter 6 Specification of Parameters GK820 User Manual - 136 -...
Page 143 GK820 User Manual Chapter 6 Specification of Parameters Factory default: b0-00 Range: 0~4 FREQ reference mode 0: Master frequency reference Output frequency of drive is determined by master frequency reference source b0-01. Refer to parameters b0-01 and b0-02 for further information. 1: Master &...
Page 144 Chapter 6 Specification of Parameters GK820 User Manual  ATTENTION: Frequency adjustment via ∧/∨ on control panel can be cleared through terminal “Clear UP/DOWN (including ∧/∨ key) adjustment”. Refer to C0-01~C0-10 for details. 1: Digital setting (b0-02) + terminal UP/DOWN adjustment When the drive is powered up, the value of b0-02 is taken as the master frequency reference.
Page 145 GK820 User Manual Chapter 6 Specification of Parameters and output frequency. See parameter group C4 for automatic correction of analog input. When using external voltage/current analog input to the drive, the connection diagram is shown as Fig. 6-3: Fig. 6-3 If 10V power supply inside the drive is used with potentiometer, the connection diagram is shown as Fig.
Page 146 Chapter 6 Specification of Parameters GK820 User Manual Table 6-4 Multi-step Multi-step Multi-step Multi-step frequency frequency frequency frequency Set frequency terminal 4 terminal 3 terminal 2 terminal 1 Multi-step FREQ 0 (F1-00) Multi-step FREQ 1 (F1-01) Multi-step FREQ 2 (F1-04) Multi-step FREQ 3 (F1-05) Multi-step FREQ 4 (F1-06) Multi-step FREQ 5 (F1-07)
Page 147 GK820 User Manual Chapter 6 Specification of Parameters terminal of the digital input. When the terminal is disabled, it runs forward, and when the terminal is enabled, it runs reverse.  ATTENTION: Master frequency reference can be forcibly switched to b0-02 via terminal “master frequency reference switched to digital setting b0-02”.
Page 148 Chapter 6 Specification of Parameters GK820 User Manual positive and negative voltages determine the direction of the frequency reference.  ATTENTION: See b0-05 and b0-06 for information about frequency relation that corresponds to maximum value of analog input of auxiliary frequency reference. 6: X7/DI pulse input Auxiliary frequency reference is determined by pulse frequency via terminal X7/DI only.
Page 149 GK820 User Manual Chapter 6 Specification of Parameters b0-05 Auxiliary FREQ range Range: 0~1 Factory default: 0 0: Relative to maximum frequency 1: Relative to master frequency See b0-06 specification for details. Factory default: b0-06 Range: 0.0%~100.0% Auxiliary FREQ coeff 100.0% When b0-03 selects AI1, AI2, AI3, X7/DI pulse input, or process PID output as auxiliary frequency reference source, b0-05 and b0-06 will determine the final output value of auxiliary...
Page 150 Chapter 6 Specification of Parameters GK820 User Manual Frequency output 频率输出 (b0-08)×(b0-06) PID output PID输出最大值 Maximum value Fig. 6-6 When b0-05 is set to 1 (relative to master frequency): When AI1, AI2, AI3, or X7/DI pulse input is selected for auxiliary frequency reference source, the frequency that corresponds to maximum value of these sources should be: [master frequency ×...
Page 151 GK820 User Manual Chapter 6 Specification of Parameters Computation of master b0-07 Range: 0~3 Factory default: 0 and auxiliary FREQ 0: Master + auxiliary The sum of master and auxiliary frequency is taken as frequency reference. Output result is subject to limitation of upper and lower limit frequency. 1: Master –...
Page 152 Chapter 6 Specification of Parameters GK820 User Manual  ATTENTION: ⚫ Maximum frequency, upper limit frequency and lower limit frequency should be set with care in accordance with nameplate parameters of motor and operation requirements. ⚫ Jog and motor tune is free from limitations of upper and lower limit frequency. ⚫...
Page 153 GK820 User Manual Chapter 6 Specification of Parameters Lower limit of skip Range: 0.00Hz ~ upper limit Factory default: b0-13 FREQ band 1 frequency 0.00Hz Upper limit of skip Range: 0.00Hz ~ upper limit Factory default: b0-14 FREQ band 1 frequency 0.00Hz Lower limit of skip...
Page 154: Group B1 Start/Stop Control
Chapter 6 Specification of Parameters GK820 User Manual Time Fig. 6-10 Thereof: F1 is jog frequency b0-19. t1 represents the ACC time from zero to jog frequency; t1 = (b2-10) × f1/(b0-08); b0-08 is the maximum frequency. t2 is the DEC time from jog frequency to 0; t2 = (b2-11) ×...
Page 155 GK820 User Manual Chapter 6 Specification of Parameters Multifunction key MF can be set to “run command sources shifted” key through parameter L0- 00. When MF key is pressed under this setting, run command will be shifted during control panel control, terminal control and communication control circularly.
Page 156 Chapter 6 Specification of Parameters GK820 User Manual b1-02 Range: 0~1 Factory default: 0 Run direction This parameter applies to run command controlled by control panel, and disabled under terminal and communication control. 0: Forward 1: Reverse b1-03 Reverse disabled Range: 0~1 Factory default: 0 0: Reverse enabled...
Page 157 GK820 User Manual Chapter 6 Specification of Parameters When this parameter is set to 2~4, the drive will detect the motor rotary speed in order to perform a smooth start from the detected rotary speed. This start method is applicable to the restart on momentary power loss, like rotating fan, etc.
Page 158 Chapter 6 Specification of Parameters GK820 User Manual the faster the flying start will be. However, excessively rapid flying start brings about inaccuracy of flying start. Flying start adjustment Factory default: b1-12 Range: 0.0%~100.0% coeff 1.0% When the start method is set to flying start (b1-05=2 or 3), a suitable flying start adjustment coeff can suppress the output current during the process of flying start thus improve the smoothness of flying start.
Page 159 GK820 User Manual Chapter 6 Specification of Parameters electric energy generated during Decel into heat energy by increasing magnetic flux so as to attain rapid stop. If this parameter is enabled, the Decel time will be shortened. If overexcitation brake is disabled, the Decel current of motor will decrease and the Decel time will be lengthened.
Page 160: Group B2 Accel/Decel Parameters
Chapter 6 Specification of Parameters GK820 User Manual Group b2 Accel/Decel Parameters Accel/Decel time b2-00 Range: 0~2 Factory default: 1 resolution 0: 0.01s; the setting range of Accel/Decel time is 0.00s~600.00s 1: 0.1s; the setting range of Accel/Decel time is 0.0s~6000.0s 2: 1s;...
Page 161 GK820 User Manual Chapter 6 Specification of Parameters Table 6-5 Accel/Decel time Accel/Decel time Accel/Decel time determinant 2 determinant 1 Accel/Decel time 1(b2-01, b2-02) Accel/Decel time 2(b2-03, b2-04) Accel/Decel time 3(b2-05, b2-06) Accel/Decel time 4(b2-07, b2-08)  ATTENTION: When the drive is running under simple PLC, the Accel time and Decel time are determined by simple PLC related parameters, not by the DI terminals.
Page 162 Chapter 6 Specification of Parameters GK820 User Manual Output frequency Time Accel time Decel time Fig. 6-12 fmax is maximum frequency b0-08. 1: Broken-line Accel/Decel Accel/Decel time is shifted based on output frequency during Accel/Decel. When output frequency during Accel is higher than or equal to b2-13 (Accel time switching frequency of broken-line Accel/Decel), b2-01 (Accel time 1) is enabled.
Page 163 GK820 User Manual Chapter 6 Specification of Parameters 2: S-curve Accel/Decel A By adding a period of S-curve time to the initial and ending segments of Accel/Decel, it can improve the smoothness of start/stop and prevent mechanical impact. See Fig. 6-14: Output frequency Linear Accel...
Page 164 Chapter 6 Specification of Parameters GK820 User Manual Output frequency 输出频率 b2-20 b2-21 Linear 直线 Accel 加速 b2-19 b2-22 Time 时间 Fig. 6-15 S-curve time at first segment of Accel is (b2-19×t1) in the figure, in which the Accel rate increases progressively.
Page 165 GK820 User Manual Chapter 6 Specification of Parameters 4: S-curve Accel/Decel C The motor rated frequency is taken as inflection point of this S-curve, and the set Accel/Decel time is: Accel/Decel rate = Motor rated frequency / Accel/Decel time (√) NOT Accel/Decel rate = Maximum frequency / Accel/Decel time (×) When set frequency is higher than motor rated frequency, the Accel/Decel time is automatically...
Page 166 Chapter 6 Specification of Parameters GK820 User Manual  ATTENTION: When broken-line Accel/Decel is selected, terminals “Accel/Decel time determinant 1” and “Accel/Decel time determinant 2” will be disabled. Time of Accel S-curve first b2-15 Range: 0.00s~60.00s Factory default: 0.20s segment Time of Accel S-curve last b2-16 Range: 0.00s~60.00s...
Page 167: Group C Input & Output Terminals
GK820 User Manual Chapter 6 Specification of Parameters Group C Input & Output Terminals Group C0 Digital Input Enabled condition of run command C0-00 Range: 0~1 Factory default: 0 terminals when power up This parameter is only for digital terminals with parameter value 1~4 (forward/reverse jog, and forward/reverse run), and also is only for initial run after power up.
Page 168 Chapter 6 Specification of Parameters GK820 User Manual Parameter setting of digital input is as shown in Table 6-6: Table 6-6 Digital input functions Set value Function Set value Function No function Count input JOG forward Count clear Length count JOG reverse Length clear Run forward (FWD)
Page 169 GK820 User Manual Chapter 6 Specification of Parameters Set value Function Set value Function Run command switched to Start wobble frequency control panel control Run command switched to Clear wobble frequency status terminal control Run command switched to Run prohibited communication control FREQ reference mode shift DC brake in run...
Page 170 Chapter 6 Specification of Parameters GK820 User Manual In case of three-wire control is enabled, “three-wire control” terminal is activated. For details, refer to C0-19 (FWD/REV terminal control mode). 6: Run suspended When “running suspended” terminal is enabled during the running, the drive will block the output and perform zero-frequency running.
Page 171 GK820 User Manual Chapter 6 Specification of Parameters via terminals UP/DOWN and keys ∧/∨, to digital set value b0-02 or b0-04. 15: Multi-step frequency terminal 1 16: Multi-step frequency terminal 2 17: Multi-step frequency terminal 3 18: Multi-step frequency terminal 4 16-step frequency can be attained via combination of multi-step frequency terminals 1~4, as shown in Table 6-7: Table 6-7...
Page 172 Chapter 6 Specification of Parameters GK820 User Manual Table 6-8 Accel/Decel time Accel/Decel time Accel/Decel time determinant 2 determinant 1 Accel/Decel time 1 (b2-01, b2-02) Accel/Decel time 2 (b2-03, b2-04) Accel/Decel time 3 (b2-05, b2-06) Accel/Decel time 4 (b2-07, b2-08) ...
Page 173 GK820 User Manual Chapter 6 Specification of Parameters When pulse input is selected as the frequency reference, X7/DI terminal must be set to “pulse input” (C0-07 is set to 24). 25: Motor 1/2 switchover The loaded motor can be selected via this terminal as shown in Table 6-9: Table 6-9 Motor 1/2 A0-08...
Page 174 Chapter 6 Specification of Parameters GK820 User Manual 28: Run command switched to terminal control This terminal should be enabled by trigger edge. When this terminal status is switched from OFF to ON, run command will be switched to terminal control. 29: Run command switched to communication control This terminal should be enabled by trigger edge.
Page 175 GK820 User Manual Chapter 6 Specification of Parameters When this terminal is enabled, PID adjustment is paused, and the drive will maintain current output frequency. After this terminal becomes disabled, PID adjustment recovers. 35: PID integration paused When this terminal is enabled, PID integrator stops its integration, and the current value is maintained.
Page 176 Chapter 6 Specification of Parameters GK820 User Manual terminal is disabled, the motor will quit position locked status and run at set speed. 42~50: Reserved 51: Position reference pulse input This function is valid only under closed-loop vector control, as well as when F4-00 (position control mode) is set to “5: pulse train position control”.
Page 177 GK820 User Manual Chapter 6 Specification of Parameters terminal input pulse. F4-38 is the pulse correction magnification at this time, and the correction direction is determined by the “pulse correction direction” terminal. 57: Pulse correction direction Used in conjunction with the “Pulse Correction Input” terminal. When this terminal is OFF, forward correction is performed;...
Page 178 Chapter 6 Specification of Parameters GK820 User Manual 69: DC brake in run When this terminal is enabled, the drive will immediately fall into DC brake. After the terminal becomes disabled, the drive will be restored to normal state and ramp up to the frequency reference with the set ramp up time.
Page 179 GK820 User Manual Chapter 6 Specification of Parameters Factory default: C0-12 Range: 0.0s~3600.0s Delay time of terminal X1 0.0s Factory default: C0-13 Range: 0.0s~3600.0s Delay time of terminal X2 0.0s The delayed response time of digital input terminals X1 and X2 is set by these two parameters. ...
Page 180 Chapter 6 Specification of Parameters GK820 User Manual  ATTENTION: When AI1~AI3 are used as analog input, do not use again as digital input. That is, C0- 08~C0-10 should be set to 0. Factory default: Terminal UP/DOWN frequency C0-17 Range: 0000~1111 0000 adjustment action ◆...
Page 181 GK820 User Manual Chapter 6 Specification of Parameters Factory default: FWD/REV terminal control C0-19 Range: 0~3 mode There are four different methods when run command is determined by FED/REV terminal. This terminal control mode takes no effect on JOG. 0: Two-wire mode 1 FWD terminal inputs forward run command, while REV terminal inputs reverse run command.
Page 182 Chapter 6 Specification of Parameters GK820 User Manual FWD terminal controls forward run of the drive, REV terminal controls reverse running, and digital input terminal “three-wire run” controls the stop. Input signals of all these three terminals take effect when trigger edge is detected. +24V Three-wire 三线式运...
Page 183 GK820 User Manual Chapter 6 Specification of Parameters Factory default: Option of virtual input C0-20 Range: 000~77F terminal This parameter is a 10-bit binary numeral. The terminals that correspond respectively to bit10 (the highest bit of binary system) through bit0 (the lowest bit of binary system) are as follows: Table 6-14 Hundreds place Tens place...
Page 184: Group C1 Digital Output
Chapter 6 Specification of Parameters GK820 User Manual Group C1 Digital Output C1-00 Y1 output function Range: 0~99 Factory default: 0 Y2/DO output function C1-01 Range: 0~99 Factory default: 0 (when used as Y2) Factory default: C1-02 Range: 0~99 Relay 1 output function Factory default: C1-03 Range: 0~99...
Page 185 GK820 User Manual Chapter 6 Specification of Parameters Value Corresponding function Value Corresponding function Torque being restricted (speed PLC step completed control mode) Fault output PLC cycle completed Wobble frequency attains to upper Alarm output or lower limit frequency Set frequency attains to upper / Drive (motor) overloaded alarm lower limit frequency 0: No output...
Page 186 Chapter 6 Specification of Parameters GK820 User Manual Terminal outputs ON when output frequency exceeds C1-12 (FDT2 upper value) and will not output OFF unless output frequency drops to below C1-13 (FDT2 lower value). 12: Speed being restricted (torque control mode) This takes effect only in the mode of sensor-less vector control 2 or closed-loop vector control modes.
Page 187 GK820 User Manual Chapter 6 Specification of Parameters When consecutive run time attains the value of E0-03, corresponding terminal outputs ON. Consecutive run time is cleared when stop. 26: Accumulative run time attained When accumulative run time attains the value of E0-04, corresponding terminal outputs ON. Accumulative run time is maintained when stop.
Page 188 Chapter 6 Specification of Parameters GK820 User Manual ◆ Ones place: Y1 0: Positive logic; ON when current passes through 1: Negative logic; ON when no current passes through ◆ Tens place: Y2 (same as Y1) ◆ Hundreds place: relay 1 output 0: Positive logic;...
Page 189 GK820 User Manual Chapter 6 Specification of Parameters Factory default: C1-10 FDT1 upper value Range: 0.00Hz~maximum FREQ 50.00Hz Factory default: C1-11 FDT1 lower value Range: 0.00Hz~ maximum FREQ 49.00Hz Factory default: C1-12 FDT2 upper value Range: 0.00Hz~ maximum FREQ 25.00Hz Factory default: C1-13 FDT2 lower value...
Page 190 Chapter 6 Specification of Parameters GK820 User Manual Output 输出 Set frequency 设定频率 Frequency detection width 频率检出宽度 Time 时间 Frequency attained terminal 频率到达端子 Time 时间 Fig. 6-23 Zero current detection Factory default: C1-15 Range: 0.0%~50.0% level 5.0% Zero current detection Factory default: C1-16 Range: 0.01s~50.00s...
Page 191: Group C2 Analog And Pulse Input
GK820 User Manual Chapter 6 Specification of Parameters Group C2 Analog and Pulse Input Factory default: C2-00 Range: 0000~0333 Analog input curve 0210 Curves of analog input AI1, AI2 and AI3 are selected by this parameter. ◆ Ones place: AI1 input curve 0: Curve 1 (2 points) Defined by C2-01~C2-04.
Page 192 Chapter 6 Specification of Parameters GK820 User Manual is the maximum negative frequency. When the corresponding set value is current: 100% means 2 times the rated current of drive while “less than or equal to 0%” corresponds to zero current. When corresponding set value is torque: 100% means 2 times the rated torque, while -100% means negative “2 times the rated torque”.
Page 193 GK820 User Manual Chapter 6 Specification of Parameters Range: input of curve 2 Factory default: C2-05 Curve 2 maximum input inflection point A~110.0% 100.0% Corresponding set value of Factory default: C2-06 Range: -100.0%~100.0% 100.0% curve 2 maximum input Input of curve 2 inflection Input of curve 2 inflection point Factory default: C2-07...
Page 194 Chapter 6 Specification of Parameters GK820 User Manual Corresponding set value Corresponding set value 对应设定值 Set value that corresponds Set value that corresponds to curve 2 maximum input 曲线2最大输入对应 to curve 2 maximum input (C2-06) (C2-06) 设定值（C2-06） Set value corresponds to Set value corresponds to B点输入对应...
Page 195 GK820 User Manual Chapter 6 Specification of Parameters Range: input of curve 3 Factory default: C2-13 Curve 3 maximum input inflection point A~110.0% 100.0% Set value corresponding to Factory default: C2-14 Range: -100.0%~100.0% curve 3 maximum input 100.0% Range: input of curve 3 Input of curve 3 inflection C2-15 inflection point B~ curve 3...
Page 196: Group C3 Analog And Pulse Output
Chapter 6 Specification of Parameters GK820 User Manual between input pulse signal and set frequency is defined by curves set by C2-24~C2-27. C2-24 and C2-26 represent the range of DI input pulse frequency, 50kHz at maximum. C2-25 and C2-27 are the set values of frequency that corresponds to DI input pulse frequency: 100% corresponds to positive maximum frequency while -100% corresponds to negative maximum frequency.
Page 197 GK820 User Manual Chapter 6 Specification of Parameters The ranges of corresponding digital output of AO1, AO2 and DO are as shown in the table 6-16. Table 6-16 Parameter value Function Range No output No output Set frequency 0~maximum frequency Output frequency 0~maximum frequency Output current...
Page 198 Chapter 6 Specification of Parameters GK820 User Manual Example: Set C3-00 to 2: output frequency. Standard AO1 output: AO1 outputs 0V when output frequency is 0, and outputs 10V when output frequency is maximum frequency. If AO1 is requested to output 2V when output frequency is 0Hz, and to output 8V when output frequency is the maximum frequency.
Page 199 GK820 User Manual Chapter 6 Specification of Parameters Factory default: C3-08 AO2 filtering time Range: 0.0s~10.0s 0.0s Adjustment method of AO2 output curve is the same as AO1. Factory default: DO maximum output pulse C3-09 Range: 0.1kHz~50.0kHz 50.0kHz frequency This parameter sets the maximum output frequency when Y2/DO terminal is selected as high- speed pulse output.
Page 200 Chapter 6 Specification of Parameters GK820 User Manual Corresponding value of DO Maximum corresponding value DO pulse frequency Maximum negative corresponding value Fig. 6-37 2: Center point is (C3-09)/2, and the corresponding parameter value is positive when frequency is lower than center point. The value that corresponds to DO pulse frequency at center point is 0.
Page 201: Group C4 Automatic Correction Of Analog Input
GK820 User Manual Chapter 6 Specification of Parameters Group C4 Automatic Correction of Analog Input Parameter Group C4 is used to perform automatic correction of analog input channels, obtaining the gain and offset of corresponding channel automatically. They can automatically modify the measuring range of corresponding channel or correct meter error.
Page 202: Group D Motor And Control Parameters
Chapter 6 Specification of Parameters GK820 User Manual Take AI2 for example, automatic correction is as follows 1) Set C4-00 to 2 in stop status and press ENT key to confirm. In this way, AI2 is selected as correction channel. 2) Input a relatively low analog voltage (e.g.
Page 203 GK820 User Manual Chapter 6 Specification of Parameters d0-05 Pole number of motor 1 Range: 1~80 Factory default: 4 Factory default: d0-06 Rated speed of motor 1 Range: 0~65535 r/min model dependent No matter it is synchronous motor or asynchronous motor, above-noted motor parameters must be set correctly according to motor nameplate.
Page 204 Chapter 6 Specification of Parameters GK820 User Manual Factory default: Stator resistance of synch d0-15 Range: 0.001Ω~65.535Ω model dependent motor 1 Factory default: Direct-axis inductance of d0-16 Range: 0.1mH~6553.5mH model dependent synch motor 1 Factory default: Quadrature axis inductance d0-17 Range: 0.1mH~6553.5mH model dependent of synch motor 1...
Page 205 GK820 User Manual Chapter 6 Specification of Parameters Static tune applies to the cases where rotary tune cannot be favorably performed due to the fact that it is impossible to disengage the motor from its load. After d0-22 is set to 1 and confirmed, press the key RUN to start static tune.
Page 206 Chapter 6 Specification of Parameters GK820 User Manual Once the motor tune fails, the fault code “tUN” shall be displayed. d0-23 Overload protection of motor 1 Range: 0~2 Factory default: 1 Determines the overload protection mode of motor 1. 0: No protection Once 0 is selected, it would be impossible to perform motor overload protection.
Page 207 GK820 User Manual Chapter 6 Specification of Parameters Example: when d0-24 is set to 10.0 minutes, and the motor is running at 10Hz input, motor overload fault “oL2” shall be displayed when the run current is 150% of the motor rated current with lasting time 4 minutes.
Page 208 Please consult GTAKE technical service engineer for this parameter value setting. When the input analog signal through the channel selected by d0-25 is bigger than this threshold, the drive will immediately trip with motor overheat fault “oH2”.
Page 209: Group D1 V/F Control Parameters Of Motor
GK820 User Manual Chapter 6 Specification of Parameters Group d1 V/f Control of Motor 1 Parameters Set control parameters in Group d1 when motor 1 is selected as current load motor on which V/f control is performed. d1-00 V/f curve setting Range: 0~6 Factory default: 0 Set the relation between output voltage and output frequency of the drive when motor 1 is under...
Page 210 Chapter 6 Specification of Parameters GK820 User Manual Output voltage (V) 输出电压（V） power 2.0次幂 power 1.8次幂 power 1.6次幂 power 1.4次幂 power 1.2次幂 Rated voltage of motor 电机额定电压 SL V/f 直线V/f Output frequency (Hz) 输出频率（Hz） Rated frequency of 电机额定频率 motor Fig. 6-42 1.2~2.0 power V/f curve Range: 0.00Hz~rated frequency Factory default: d1-01...
Page 211 GK820 User Manual Chapter 6 Specification of Parameters improving the torque output. 0.0% corresponds to automatic torque boost, and drive output voltage is automatically compensated via detection of load current. Automatic torque boost is valid only for linear V/f pattern. 100% of torque boost corresponds to rated voltage of motor.
Page 212 Chapter 6 Specification of Parameters GK820 User Manual generating load: if motor speed is relatively lower, the gain should be decreased; if motor speed is relatively higher, increase the gain appropriately. Diagram of slip compensation gain is shown as Fig. 6-44 and 6-45. Motor speed 电机转速...
Page 213 GK820 User Manual Chapter 6 Specification of Parameters according to the load and this parameter value, reducing itself borne load proportion. Parameter value of d1-11 corresponds to drop frequency with rated load. d1-12 Range: 0~5 Factory default: 1 Current limitation mode 0: Disabled 1: Set by d1-13 2: Set by AI1...
Page 214: Group D2 Vector Control Parameters Of Motor 1
Chapter 6 Specification of Parameters GK820 User Manual During no-load or light-load application, load current is detected so as to appropriately reduce output voltage, reducing the copper loss and iron loss of motor with the purpose of energy saving. The larger the energy-saving percentage is, the better the energy-saving effect will be, but the response will be slower.
Page 215 GK820 User Manual Chapter 6 Specification of Parameters Table 6-17 Speed/torque control switch d2-00 Control mode terminal Speed control Torque control Torque control Speed control Under speed control, output torque of motor will match load automatically. In order to avoid overcurrent fault caused by excessive output torque, it is necessary to set appropriate torque limit value and keep output torque of motor within this limit.
Page 216 Chapter 6 Specification of Parameters GK820 User Manual The proportional gain Kp and integration time Ti of ASR can be set through d2-01~d2-04 so as to change the speed response characteristic under SVC. Increment of proportional gain Kp can bring in fast response of the system. However, bigger Kp value will bring about larger system oscillation.
Page 217 GK820 User Manual Chapter 6 Specification of Parameters Factory default: d2-08 ASR output filtering time Range: 0.0ms~500.0ms 0.3ms Sets the output filtering time of ASR. No need to modify its default setting if there is no special requirement. D-axis ACR proportion Factory default: d2-09 Range: 0.000~8.000...
Page 218 Chapter 6 Specification of Parameters GK820 User Manual communication interface at the drive. Refer to parameter Group H0 and appendix for details of communication. Braking torque restriction d2-13 Range: 0~5 Factory default: 0 source Under the pattern of SVC or closed-loop VC speed control, and when the motor is driving a power generating load, it needs to restrict the output brake torque of the motor.
Page 219 GK820 User Manual Chapter 6 Specification of Parameters Under SVC or closed-loop VC pattern, adjustment of this parameter value can improve the speed accuracy when driving driven load. If the load is becoming heavier and the motor speed is relatively lower, set a bigger value, while the motor speed is relatively higher, set a smaller value.
Page 220 Chapter 6 Specification of Parameters GK820 User Manual 2: Analog input AI2 3: Analog input AI3 Limited value of maximum forward speed is set by analog input. 4: X7/DI pulse input Limited value of maximum forward speed is set through X7/DI pulse input. 5: Communication Upper computer/device sets the limited value of maximum forward speed via inbuilt standard RS485 communication interface.
Page 221: Group D3 Parameters Of Motor 2
GK820 User Manual Chapter 6 Specification of Parameters the increase/decrease slope, not direct ramp-up or ramp-down time of torque change. Factory default: Low-frequency torque d2-26 Range: 0.0%~d2-06 0.00Hz switching frequency 1 Range: d2-05~upper limit Factory default: Low-frequency torque d2-27 frequency 10.00Hz switching frequency 2 Factory default:...
Page 222 Chapter 6 Specification of Parameters GK820 User Manual Range: Factory default: Stator resistance R1 of async d3-07 0.001Ω~65.535Ω model dependent motor 2 Range: Factory default: Leakage inductance L1 of async d3-08 0.1mH~6553.5mH model dependent motor 2 Range: Factory default: Rotor resistance R2 of async d3-09 0.001Ω~65.535Ω...
Page 223: Group D4 V/F Control Parameters Of Motor 2
GK820 User Manual Chapter 6 Specification of Parameters Temperature transducer signal Range: 0~2 Factory default: 1 d3-25 input of motor 2 Factory default: Thermal protection threshold of Range: 0.00V~10.00V d3-26 motor 2 temperature transducer 10.00V Group d4 V/f Control Parameters of Motor 2 When motor 2 is selected as current loaded motor, under V/f control pattern, please set control parameters in Group d4.
Page 224: Group D5 Vector Control Parameters Of Motor 2
Chapter 6 Specification of Parameters GK820 User Manual Group d5 Vector Control Parameters of Motor 2 When motor 2 is selected as current loaded motor under vector control, please set parameters in Group d5. The specification of vector control parameters Group d5 of motor 2 is the same with that of vector control parameters Group d2 of motor 1.
Page 225: Group D6 Encoder Parameters
GK820 User Manual Chapter 6 Specification of Parameters Range: Factory default: d5-17 Driven slip compensation gain 10.0%~300.0% 100.0% Range: Factory default: d5-18 Brake slip compensation gain 10.0%~300.0% 100.0% Range: 0~5 Factory default: 0 d5-19 Torque reference source Range: - Factory default: 0.0% d5-20 Digital setting of torque 200.0%~200.0%...
Page 226 Chapter 6 Specification of Parameters GK820 User Manual select the type of encoder by d6-06. This parameter sets input channel of encoder with speed feedback signal. In pulse train position control, set the input channel of command pulse by F4-33. F4-33 and d6-00 cannot be the same encoder.
Page 227 GK820 User Manual Chapter 6 Specification of Parameters motor by properly setting speed ratio. This parameter is defined as the ratio of motor rotation speed to encoder rotation speed. I.e., d6-03 : d6-04 = motor rotation speed : encoder rotation speed For example: when the speed reducing ratio between motor and motor spindle on machine is 3:1, which means that the motor spindle will turn a circle as the motor rotates by three circles.
Page 228 Chapter 6 Specification of Parameters GK820 User Manual If output signals of phases A and B of encoder 2 fail to match with run direction of motor, output connection of phases A and B shall be exchanged. Or modify the value of d6-08 instead of exchanging wires.
Page 229: Group E Enhanced Function And Protection Parameters
GK820 User Manual Chapter 6 Specification of Parameters Factory default: d6-13 Detected value of over-speed (OS) Range: 0.0~120.0% 120.0% Factory default: d6-14 Range: 0.00s~20.00s Detected time of over-speed (OS) 0.50s When ones place of d6-12 is set to 0, these two parameters are enabled. Factory default: Detected value of excessive speed d6-15...
Page 230 Chapter 6 Specification of Parameters GK820 User Manual 2) When torque at low speed is unstable, reduce switching frequency. 3) If the drive produces severe interference to surrounding equipment, reduce switching frequency. 4) Leakage current of the drive is big, reduce switching frequency. 5) Drive temperature rise is relatively high, reduce switching frequency.
Page 231 GK820 User Manual Chapter 6 Specification of Parameters ◆ Ones place: action when consecutive run time attained 0: Run continued When consecutive run time of the drive attains the set value of E0-03, the drive will continue to run. 1: Stop and fault reported When consecutive run time of the drive attains the set value of E0-03, the drive will report fault code "to2"...
Page 232 Chapter 6 Specification of Parameters GK820 User Manual Frequency Time Current Time Mechanical brake control Time Fig. 6-47 Upon the receipt of run command, the drive will accelerate to the mechanical brake open frequency set by E0-06. When frequency attains the value as set by E0-06, digital output terminal "mechanical brake control"...
Page 233: Group E1 Protection Parameters
GK820 User Manual Chapter 6 Specification of Parameters After digital output terminal "mechanical brake control" outputs ON signal, the drive will delay its Accel with this time. Accelerated run will be started after this set time is elapsed. Please set this parameter value in compliance with the time required for mechanism open of mechanical brake.
Page 234 Chapter 6 Specification of Parameters GK820 User Manual E1-02 Undervoltage stall Range: 0~1 Factory default: 0 0: Disabled 1: Enabled Under momentary voltage drop or momentary power loss, the drive will accordingly drop output frequency, and compensate the voltage drop via the energy feedback from load, so as to maintain consecutive running, no trip.
Page 235 GK820 User Manual Chapter 6 Specification of Parameters Factory default: E1-06 Protection action 1 Range: 0000~1111 0000 Factory default: E1-07 Protection action 2 Range: 0000~3111 3001 These two parameters set the protection action of the drive in the following abnormal status. Specification of E1-06: ◆...
Page 236 Chapter 6 Specification of Parameters GK820 User Manual power up of the drive after power loss. 0: Not memorized after power loss 1: Memorized after power loss  ATTENTION: Undervoltage fault "LoU" is not memorized after power loss. E1-09 Range: 0~20 Factory default: 0 Fault auto-reset times Factory default:...
Page 237: Group F Application
GK820 User Manual Chapter 6 Specification of Parameters 0: No action 1: Action enabled Set whether or not fault relay acts when undervoltage occurs. ◆ Tens place: when fault locked 0: No action 1: Action enabled Set whether or not the relay acts when the fault locked at latest power loss after power up. ◆...
Page 238 Chapter 6 Specification of Parameters GK820 User Manual - 232 -...
Page 239 GK820 User Manual Chapter 6 Specification of Parameters F0-00 Range: 0~5 Factory default: 0 PID reference Selects the setting source of PID control. 0: F0-01 digital setting 1: AI1 2: AI2 3: AI3 4: X7/DI pulse input 5: Communication Factory default: F0-01 PID digital setting Range: 0.0%~100.0%...
Page 240 Chapter 6 Specification of Parameters GK820 User Manual value of F0-23 (maximum frequency if it is opposite to rotary set direction), PID integral will cease. This mode can quit integral saturation status rapidly. PID positive and negative F0-04 Range: 0~1 Factory default: 0 adjustment 0: Positive adjustment...
Page 241 GK820 User Manual Chapter 6 Specification of Parameters Process PID is provided with two groups of proportion, integral and derivative parameters set by F0-14. F0-08~F0-10 are the first group of parameters. Proportional gain Kp: dynamic response of the system can be quickened by increasing proportional gain Kp.
Page 242 Chapter 6 Specification of Parameters GK820 User Manual Input offset under PID auto Factory default: F0-15 Range: 0.0%~100.0% 20.0% switch When F0-14 is set to 1, this parameter sets the switching point of the two groups of PID parameters. When the offset between setting and feedback is less than this set value, it is determined by Kp1, Ti1 and Td1.
Page 243: Group F1 Multi-Step Frequency
GK820 User Manual Chapter 6 Specification of Parameters feedback loss detection is disabled. Cutoff FREQ when opposite to Range: 0.00Hz~maximum Factory default: F0-23 rotary set direction frequency 50.00Hz When run command direction is forward, while PID output is reverse, the maximum reverse frequency will be determined by F0-23.
Page 244 Chapter 6 Specification of Parameters GK820 User Manual 8: Communication At most 16-step of frequency can be set through the combination of "multi-step frequency terminals 1~4" of digital input. Multi-step frequency 2~15 are only digital setting while a number of setting sources can be selected for multi-step frequency 0~1. Parameter value of F1-01 determines command source of step 1.
Page 245 GK820 User Manual Chapter 6 Specification of Parameters Table 6-20 Multi-step Multi-step Multi-step Multi-step Set frequency terminal 4 terminal 3 terminal 2 terminal 1 Multi-step frequency 0 (F1-00) Multi-step frequency 1 (F1-01) Multi-step frequency 2 (F1-04) Multi-step frequency 3 (F1-05) Multi-step frequency 4 (F1-06) Multi-step frequency...
Page 246: Group F2 Simple Plc
Chapter 6 Specification of Parameters GK820 User Manual Group F2 Simple PLC Simple PLC is a multi-step frequency generator. The drive can automatically change run frequency and direction based on run time so as to meet on-site technological requirements. Flow chart is shown as Fig. 6-49. T5 T6 T9 T10 T11 T12 T13 T14 T15 PLC step completed...
Page 247 GK820 User Manual Chapter 6 Specification of Parameters T9 T10 T11 T12 T13 T14 T15 PLC step completed PLC阶段完成 Pulse length: 500ms 500ms宽度的脉冲 PLC cycle completed PLC循环完成运行命令 Run command Fig. 6-50 1: Continue to run with the last frequency after a single cycle After the completion of one cycle, PLC maintains the run frequency and direction of the last step.
Page 248 Chapter 6 Specification of Parameters GK820 User Manual 2: Cycle repeated PLC automatically starts the another cycle after finishing one cycle until there is a stop command, shown as Fig. 6-52. T5 T6 T9 T10 T11 T12 T13 T14 T15 PLC阶段完成...
Page 249 GK820 User Manual Chapter 6 Specification of Parameters Output frequency 输出频率 Coast to stop when fault occurs 故障，自由停车 Time 时间 Run time Run time Remnant 阶段0 阶段1 阶段2已阶段2剩余阶段3 Run time 运行时间运行时间运行时间运行时间运行时间 of step 0 of step 2 time of time of...
Page 250 Chapter 6 Specification of Parameters GK820 User Manual Factory default: F2-01 Range: 000~327 Setting of multi-step 0 ◆ Ones place: frequency reference Sets the frequency reference of step 0 of simple PLC. 0: Multi-step frequency 0 (F1-02) 1: AI1 2: AI2 3: AI3 4: X7/DI pulse input 5: Process PID output...
Page 251 GK820 User Manual Chapter 6 Specification of Parameters Factory default: F2-04 Range: 0.0~6000.0s(min) Run time of step 1 0.0s Sets the run time for step 1 of simple PLC and the time unit is set by thousands place of F2-00. Factory default: F2-05 Range: 000~327...
Page 252 Chapter 6 Specification of Parameters GK820 User Manual Factory default: F2-11 Setting of step 5 Range: 000~327 ◆ Ones place: frequency reference 0: Multi-step frequency 5 (F1-07) 1~7: same as F2-01 ◆ Tens place: run direction (same as F2-01) ◆ Hundreds place: Accel/Decel time option (same as F2-01) Factory default: F2-12 Run time of step 5...
Page 253 GK820 User Manual Chapter 6 Specification of Parameters Factory default: F2-17 Setting of step 8 Range: 000~327 ◆ Ones place: frequency reference 0: Multi-step frequency 8 (F1-10) 1~7: same as F2-01 ◆ Tens place: run direction (same as F2-01) ◆ Hundreds place: Accel/Decel time option (same as F2-01) Factory default: F2-18 Run time of step 8...
Page 254 Chapter 6 Specification of Parameters GK820 User Manual Factory default: F2-23 Setting of step 11 Range: 000~327 ◆ Ones place: frequency reference 0: Multi-step frequency 11 (F1-13) 1~7: same as F2-01 ◆ Tens place: run direction (same as F2-01) ◆ Hundreds place: Accel/Decel time option (same as F2-01) Factory default: F2-24 Run time of step 11...
Page 255: Group F3 Wobble Frequency And Fixed Length Count
GK820 User Manual Chapter 6 Specification of Parameters Factory default: F2-29 Setting of step 14 Range: 000~327 ◆ Ones place: frequency reference 0: Multi-step frequency 14 (F1-16) 1~7: same as F2-01 ◆ Tens place: run direction (same as F2-01) ◆ Hundreds place: Accel/Decel time option (same as F2-01) Factory default: F2-30 Run time of step 14...
Page 256 Chapter 6 Specification of Parameters GK820 User Manual Output frequency 输出频率 Wobble frequency Hop frequency 突跳频率摆频正幅度 positive amplitude Wobble frequency 摆频负幅度 negative amplitude Upper limit of wobble frequency 摆频频率上限 Center frequency 摆频中心频率 Lower limit of wobble frequency 摆频频率下限摆频预置频率 Pre-wobble frequency 三角波...
Page 257 GK820 User Manual Chapter 6 Specification of Parameters Amplitude = F3-04 x maximum frequency b0-08. ◆ Hundreds place: wobble frequency memorized when stop 0: Memory enabled The drive memorizes the current wobble frequency state when stop. When restarted, drive continues to run the wobble frequency with the memorized state at latest stop. Pre-frequency of wobble frequency F3-02 is enabled at restart.
Page 258 Chapter 6 Specification of Parameters GK820 User Manual Factory default: F3-06 Cycle of wobble frequency Range: 0.0s~999.9s 0.0s The time of the completion of a complete process of wobble frequency Factory default: F3-07 Triangular wave ramp-up time Range: 0.0%~100.0% 0.0% Sets the wobble frequency run time of ramp-up segment.
Page 259 GK820 User Manual Chapter 6 Specification of Parameters  ATTENTION: When actual length is detected to attain the set length, digital output terminal "length attained" outputs ON signal no matter the drive is set to stop or not stop. Actual length is saved at power loss and can be read in both stop and run.
Page 260: Group F4 Position Control
Chapter 6 Specification of Parameters GK820 User Manual Group F4 Position Control. Position control is valid only in closed-loop vector control. Position control includes zero-speed clamping, angular positioning , simple feed control, and pulse train position control. F4-00 Range: 0~2; 5 Factory default: 0 Position control mode 0: Non-position control...
Page 261 GK820 User Manual Chapter 6 Specification of Parameters Factory default: F4-03 Range: 0.000~40.000 Position loop gain 1.000 This parameter value is the proportional gain of position regulator in position control. Increasing this parameter value improves the efficiency of position control and increase the holding force at the stop of zero-speed clamping.
Page 262 Chapter 6 Specification of Parameters GK820 User Manual 1: Encoder 1 setting, phase A/B pulse. Phase A that is 90° ahead of phase B corresponds to forward. 2: Encoder 1 setting, phase A/B pulse. Phase B that is 90° ahead of phase A corresponds to forward.
Page 263 GK820 User Manual Chapter 6 Specification of Parameters Factory default: F4-36 Feed-forward gain Range: 0.000~7.000 1.000 When the frequency of command pulse changes, if lagging of the tracking of feedback pulse occurs, please increase the value of feed-forward gain gradually. In the contrary case, please decrease the value of feed-forward gain gradually.
Page 264: Group H Communication Parameters
Chapter 6 Specification of Parameters GK820 User Manual Factory default: Position control F4-41 Range: 0000~1111 0000 optimization ◆ Ones place: Pulse error counter reset option 0: Reset when stop 1: Kept when stop ◆ Tens place: Reserved ◆ Hundreds place: Reserved ◆...
Page 265 GK820 User Manual Chapter 6 Specification of Parameters 0: Not saved at power loss 1: Saved at power loss Local address of SCI port H0-02 Range: 0~247 Factory default: 5 communication Sets this drive address. 0 is broadcast address, while available addresses are 1~247. Time out detection of SCI port Factory default: H0-03...
Page 266: Group H1 Profibus-Dp Communication Parameters
Chapter 6 Specification of Parameters GK820 User Manual This parameter setting is very useful when a master drive controls a number of slave drives and needs to allocate the frequency. Group H1 Profibus-DP communication parameters Refer to EPC-CM2 Instruction Manual for details Group L Keys and Display of Control panel Group L0 Keys of Control panel L0-00...
Page 267: Group L1 Control Panel Display Setting
GK820 User Manual Chapter 6 Specification of Parameters ◆ Tens place: option at power loss 0: Clear at power loss Keys ∧/∨ frequency adjustment step size is cleared at power loss. 1: Holding at power loss Keys ∧/∨frequency adjustment step size is saved at power loss. ◆...
Page 268 Chapter 6 Specification of Parameters GK820 User Manual BIT3: Output current (A) ◆ Tens place BIT0: Output torque (%) BIT1: Output power (kW) BIT2: Output voltage (V) BIT3: Motor speed (r/min) ◆ Hundreds place BIT0: AI1 (V) BIT1: AI2 (V) BIT2: AI3 (V) BIT3: Output sync frequency (Hz) ◆...
Page 269 GK820 User Manual Chapter 6 Specification of Parameters BIT2: Reserved BIT3: Reserved ◆ Thousands place: BIT0: Reserved BIT1: Reserved BIT2: Reserved BIT3: Reserved Factory default: Display parameter setting L1-02 Range: 0000~FF7F 0003 on stop status Sets LED displayed parameters on stop status. When a number of parameters are selected, skim- through could be realized via key >>...
Page 270: Group U Monitoring
Chapter 6 Specification of Parameters GK820 User Manual Factory default: L1-03 Range: 0.1%~999.9% Linear speed coeff 100.0% This coefficient is used for calculation of linear speed. Run linear speed = motor run speed x L1-03 Set linear speed = motor speed setting x L1-03 Both run linear speed and set linear speed can be viewed during the run and stop.
Page 271 GK820 User Manual Chapter 6 Specification of Parameters Factory default: U0-11 Range: 000~222 Drive status ◆ Ones place: Run status 0: Accelerating 1: Decelerating 2: Constant speed running ◆ Tens place: drive status 0: Stop 1: Running 2: Autotune ◆ Hundreds place: drive status 0: Speed control 1: Torque control 2: Position control...
Page 272 Chapter 6 Specification of Parameters GK820 User Manual For example: If 23 (i.e. 0010 0011) is displayed at U0-18, it means the input status of terminals X1, X2 and X6 is ON and that of the other terminals is OFF. If 05 (i.e.
Page 273 GK820 User Manual Chapter 6 Specification of Parameters Factory default: U0-30 Range: 0h~65535h Cumulative power-up time Factory default: U0-31 Cumulative run time Range: 0h~65535h Factory default: U0-32 Heat sink temperature 1 Range: -40.0℃~100.0℃ 0.0℃ Factory default: U0-33 Heat sink temperature 2 Range: -40.0℃~100.0℃...
Page 274: Group U1 History Fault
Chapter 6 Specification of Parameters GK820 User Manual Lower-bit numbers of terminal Range: Factory default: U0-45 UP/DOWN stored value 0.00Hz~655.35Hz 0.00Hz U0-46 Factory default: 0 Position control pulse error Range: -9999~+9999 Center frequency of wobble Range: Factory default: U0-52 frequency 0Hz~600.00 Hz 0.00 Hz Range: 0~65535...
Page 275 GK820 User Manual Chapter 6 Specification of Parameters Range: 0~46 Factory default: 0 U1-09 Code of fault 2 Factory default: Range: 0.00Hz~600.00Hz U1-10 Run frequency at fault 2 0.00Hz Range: 0.0A~6553.5A Factory default: 0.0A U1-11 Output current at fault 2 Range: 0V~1000V Factory default: 0V U1-12...
Page 276: Chapter 7 Troubleshooting
Chapter 7 Troubleshooting GK820 User Manual Chapter 7 Troubleshooting 7.1 Fault Causes and Troubleshooting Once drive fault occurs, please identify the causes of fault carefully and make a detailed record of fault symptom. To seek services, please contact the dealer. Parameters U1-00, U1-09 and U1-18 are used to view the records of fault 1, fault 2 and fault 3.
Page 277 GK820 User Manual Chapter 7 Troubleshooting Fault Fault Fault Causes Solutions code display description Load inertia is too big Use dynamic brake Decel time is too short Prolong the Decel time Input voltage is too low Check power grid voltage Decel Output short circuit overcurrent...
Page 278 Chapter 7 Troubleshooting GK820 User Manual Fault Fault Fault Causes Solutions code display description Overvoltage or Refer to the solutions of overcurrent overvoltage or overcurrent Output short circuit Check motor connection (phase-to-phase short and output ground circuit or output ground impedance short circuit) Module...
Page 279 GK820 User Manual Chapter 7 Troubleshooting Fault Fault Fault Causes Solutions code display description Torque boost is too big Reduce torque boost under V/f control value Inappropriate V/f curve Set V/f curve correctly under V/f control Set the parameters Motor parameters are correctly according to improperly set motor nameplate...
Page 280 Chapter 7 Troubleshooting GK820 User Manual Fault Fault Fault Causes Solutions code display description Severe voltage imbalance among Check power grid voltage power supply phases Input power Abnormal input wiring Check power supply input supply fault of power supply wiring Abnormal bus Seek services capacitance...
Page 281 GK820 User Manual Chapter 7 Troubleshooting Fault Fault Fault Causes Solutions code display description Temperature sensor not well connected with Pull out and re-insert socket Ambient temperature is Raise ambient temperature too low temperature measurement Module detection circuit circuit fault Seek services failed Thermistor failed...
Page 282 Chapter 7 Troubleshooting GK820 User Manual Fault Fault Fault Causes Solutions code display description External fault terminal Check the status of External is enabled external fault terminal equipment Stall condition lasts too Check if the load is error long abnormal Consecutive "Consecutive run time See specification of...
Page 283 GK820 User Manual Chapter 7 Troubleshooting Fault Fault Fault Causes Solutions code display description Parameter uploading or Seek services downloading abnormal Parameter copy failure No parameters stored Seek services at control panel Software Version of control panel version is not consistent with Seek services compatibility that of control board...
Page 284 Chapter 7 Troubleshooting GK820 User Manual Fault Fault Fault Causes Solutions code display description Abnormal PID feedback Check the feedback channel abnormal channel PID feedback lost Inappropriate setting of Set properly PID parameters Communication wiring Rewiring Abnormal problem Profibus Check peripheral communicatio Severe ambient EMI equipment or seek...
Page 285: Chapter 8 Maintenance
GK820 User Manual Chapter 8 Maintenance Chapter 8 Maintenance Ambient temperature, humidity, salt mist, dust, vibration, aging and wear of internal components may result in drive faults. Routine maintenance shall be performed during the use and storage.  ATTENTION: Please make sure the power supply of the drive has been cut off, and DC bus voltage has discharged to 0V before the maintenance.
Page 286: Regular Maintenance
Chapter 8 Maintenance GK820 User Manual Inspection Inspection Inspection aspects Criteria items methods No abnormal heating and Thermal status Smell scorching smell Motor Noise Listen No abnormal noise Observe, Vibration No abnormal vibration and sound listen Power supply input Ammeter In the range of requirement current Power supply input...
Page 287: Replacement Of Vulnerable Parts
GK820 User Manual Chapter 8 Maintenance Inspection items Measures Check if there are defect on power cables and control Replace the cables cables Check if there is dust on circuit board Clear it up Check if air duct is blocked Clear it up Test the ground terminal with 500V megameter after all input...
Page 288: Storage
Chapter 8 Maintenance GK820 User Manual Vulnerable parts of drive include cooling fan, electrolytic capacitor, relay or contactor etc. The service lives of these parts are subject to environment and working conditions. To maintain a favorable operating environment is conducive to improving the service life of parts and components;...
Page 289 GK820 User Manual Chapter 8 Maintenance Recommended storage method and Items Requirements environment In case of long-term storage, areas with an ambient temperature of less than 30℃ are Storage recommended -40~+70℃ temperature Avoid the storage in areas where temperature shock may result in condensation and freezing Storage Product could be sealed with plastic film and...
Page 290: Appendix Communication Protocol
Appendix Communication Protocol GK820 User Manual Appendix Communication Protocol Networking Mode The drives have two networking modes, single master/multiple slaves networking and single master/single slave networking. 主机为主机为 The master The master is PC is PC PC机 RS232 232/485 RS485 转换模块...
Page 291: Protocol Format
GK820 User Manual Appendix Communication Protocol 2) Native address, baud rate and data format of inverter are set through slave operating panel or serial communication; 3) Slave reports the current fault information in the latest response frame for master polling; 4) Drive employs RS-485 interface or extended RS-232 interface.
Page 292: Appendix Table
Appendix Communication Protocol GK820 User Manual Response frame of slave 0x01 is as below: Appendix Table 2 Register Address Function code Read words Check sum address 13 88 B5 12 ASCII: Frame header is "0x3A" while the default frame end is "0x0D0A"; also, frame end can be configured and defined by user;...
Page 293: Protocol Function
GK820 User Manual Appendix Communication Protocol Protocol Function The uppermost function of Modbus is to read and write parameters, and different parameters determine different operation requests. Parameters operations supported by inverter Modbus protocol are as shown in the table below: Appendix Table 4 Parameters Parameter Meaning of parameter...
Page 294 Appendix Communication Protocol GK820 User Manual Parameter Mapping register Mapping register Parameter group group address, high byte address, high byte 0x08 0x1A 0x09 0x1B 0x0A 0x1C 0x0B 0x1D 0x0C 0x1E 0x0D 0x1F 0x0E 0x20 0x0F 0x21 Drive control parameter 0x10 0x62 group Drive status parameter...
Page 295 GK820 User Manual Appendix Communication Protocol Response format is shown in appendix table 7. Appendix Table 7 Application layer protocol Data length (number of Range data unit bytes) Parameter 0x03 Number of read bytes 2* number of registers Register content 2* number of registers Check LRC or CRC...
Page 296 Appendix Communication Protocol GK820 User Manual The list of these parameters is shown in appendix table 10. Appendix Table 10 Parameters Remarks (Autotune) d0-22 d3-22 Communication not operable (Parameter passing) A0-05 Communication not operable User password can not be set by communication, but the user password set by control panel can be unlocked by writing the...
Page 297 GK820 User Manual Appendix Communication Protocol Sub-parameters supported by line diagnosis are as set forth in the table below. Appendix Table 13 Line diagnosis sub-parameter Data Data Sub-PARA Meaning of subfunction (request) (response) Reinitialize communication: make no- 0x0000 0x0000 response mode disable. 0x0001 Reinitialize communication: make no- 0xFF00...
Page 298 Appendix Communication Protocol GK820 User Manual Response format is shown in appendix table 15. Appendix Table 15 Application layer protocol Data length (number of Range data unit bytes) Parameter 0x10 Register address 0x0000~0xFFFF Number of registers 0x0001~0x0004 Check LRC or CRC Parameter 0x42: parameter management Request format is shown in appendix table 16.
Page 299 GK820 User Manual Appendix Communication Protocol Sub-parameters supported by parameter management are set forth in the table 18. Appendix Table 18 Parameter management sub-parameters Meaning of sub- Sub-PARA Data (request) Data (response) function Parameter group number and in-group index Read the upper limit 0x0000 Upper limit of parameter respectively possess high...
Page 300 Appendix Communication Protocol GK820 User Manual Appendix Table 19 Parameter characteristics Characteristic Value Meaning parameter (BIT) Changeable in run Not changeable in run, but changeable in stop BIT1~BIT0 Read only Factory parameters 000B Accuracy: 1 001B Accuracy: 0.1 010B Accuracy: 0.01 BIT4~BIT2 011B Accuracy: 0.001...
Page 301 GK820 User Manual Appendix Communication Protocol The response format is shown as table 20 when an error occurs. Appendix Table 20 Application layer Data length (number of bytes) Range protocol data unit Parameter 0x80 + parameter Error code Check LRC or CRC Error codes supported by Modbus protocol are listed in the table below: Appendix Table 21 Error codes Error codes...
Page 302 Appendix Communication Protocol GK820 User Manual Save at power Register address Parameter name loss 0x6204 Auxiliary frequency reference 0x6205 Multi-step frequency reference 0x6206 Simple PLC frequency reference 0x6207 PID digital setting percentage (0~100.0%) 0x6208 PID feedback percentage (0~100.0%) 0x6209 Driven torque limit (0~200.0%) 0x620A Brake torque limit (0~200.0%) 0x620B...
Page 303 GK820 User Manual Appendix Communication Protocol Register address Parameter name 0x6309 High-bit words of actual length 0x630A Low-bit words of actual length 0x630B Status of digital input terminal 0x630C Status of digital output terminal 0x630D Setting of run frequency 0x630E PID setting 0x630F PID feedback...
Page 304 Appendix Communication Protocol GK820 User Manual Control bit Value Meaning Function description Reverse Set the run direction BIT1 when run command Forward enabled BIT2 Jog disabled Reset command enabled BIT3 Reset command disabled Coast to stop enabled BIT4 Coast to stop disabled BIT15~BIT5 000000B Reserved...
Page 305 GK820 User Manual Appendix Communication Protocol Appendix Table 26 Status word 2 bits Status bit Value Meaning Remarks BIT0 Non-jog PID run BIT1 Non-PID run PLC run BIT2 Non-PLC run Run at multi-step frequency BIT3 Run at non-multi step frequency Ordinary run BIT4 Non-ordinary run...
Page 306: Operation Instructions
Appendix Communication Protocol GK820 User Manual Operation Instructions 0x03 reads multiple (including one) registers (default address is 0x01). Master enquiry: Appendix Table 27 Address Parameter Register Number of Check code address registers XX XX 000X XX XX Slave response: Appendix Table 28 Address Parameter Total number...
Page 307 GK820 User Manual Appendix Communication Protocol Appendix Table 31 Address Parameter Sub-parameter Data Check code XX XX B1~B0 XX XX Register address: 0x00 00~0x21 06 and 0x62 00~0x63 22. Sub-parameter: refer to the table of parameter managing sub-parameter. Data: refer to the values of data as set forth in the table of parameter managing sub-parameter. Example: Parameter 0x42 is used here to read the upper limit value of 0x01 slave's control parameter b0- 02 which is 600.00:...
Page 308 Appendix Communication Protocol GK820 User Manual 10H writes that the data of multiple registers are not saved. Master enquiry: Appendix Table 36 Register Number of Number of Check Address Parameter Data address registers data bytes code Number of XX XX 0001~0004 XX XX XX XX...
Page 309 GK820 User Manual Appendix Communication Protocol Appendix Table 40 Address Function code Subfunction code Data Check code XX XX Bn~B0 XX XX Sub-parameter: table of line diagnosis sub-parameter. Example: Parameter 0x08 is used here to set the communication no-response mode of 0x01 slave: Appendix Table 41 Address Parameter...
Page 310: Lrc/Crc Generation
Appendix Communication Protocol GK820 User Manual LRC/CRC Generation In consideration of the demand for speed improvement, CRC-16 is usually realized in form mode. C-language source codes for realization of CRC-16 are given below. Please note that the high and low bytes have been exchanged in final result, that is to say, the result is the CRC check sum to be sent: /* The function of CRC16*/ Uint16 CRC16(const Uint16 *data, Uint16 len)

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