Kruger Ecowatt Drive K120 Series Operation Manual
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Kruger Ecowatt Drive K120 Series Operation Manual

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Summary of Contents for Kruger Ecowatt Drive K120 Series

  • Page 2 Ecowatt ® Drive K120 series Change history Change description Version Release date First release V1.0 June 2021...
  • Page 3 Preface Preface The Ecowatt Drive K120 series is a 1phase input – 3phase output variable-frequency drive (VFD) that specific designed to be applied in Fan application which integrates the latest Safety and Energy-saving functions for the demand control ventilation system. It can drive both synchronous motors and asynchronous motors.

  • Page 4: Table Of Contents

    Ecowatt ® Drive K120 series Contents Contents Contents .............................. i 1 Safety precautions ........................1 1.1 Safety definition..........................1 1.2 Warning symbols.......................... 1 1.3 Safety guidelines ........................... 2 1.3.1 Delivery and installation ....................2 1.3.2 Commissioning and operation ..................3 1.3.3 Maintenance and component replacement ...............
  • Page 5 Ecowatt ® Drive K120 series Contents 4.2 Keypad display ........................... 26 4.2.1 Displaying stopped-state parameters ............... 26 4.2.2 Displaying running-state parameters ..............26 4.2.3 Displaying fault information ..................27 4.2.4 Editing function codes ....................27 4.3 Operatons on the keypad ......................27 4.3.1 Modifying VFD function codes ..................
  • Page 6 Ecowatt ® Drive K120 series Contents 7.2.2 RTU mode ......................... 127 7.3 RTU command code and communication data.............. 131 7.3.1 Command code 03H, reading N words (continuously up to 16 words) ..131 7.3.2 Command word 06H, writing a word ..............132 7.3.3 Command code 08H, diagnosis ..................
  • Page 7 C.7.1 Braking resistor selection .................... 161 C.7.2 Braking resistor installation ..................162 Appendix D Further information ..................... 164 D.1 Product and service queries ....................164 D.2 Feedback on Kruger VFD manuals ................... 164 D.3 Documents on the Internet ....................164 -iv-...

  • Page 8: Safety Precautions

    Ecowatt ® Drive K120 series Safety precautions 1 Safety precautions Please read this manual carefully and follow all safety precautions before moving, installing, operating and servicing the variable-frequency drive (VFD). If ignored, physical injury or death may occur, or damage may occur to the devices. If any physical injury or death or damage to the devices occurs for ignoring to the safety precautions in the manual, our company will not be responsible for any damages and we are not legally bound in any manner.

  • Page 9: Safety Guidelines

    Ecowatt ® Drive K120 series Safety precautions 1.3 Safety guidelines  Only qualified electricians are allowed to operate on the VFD.  Do not carry out any wiring and inspection or changing components when the power supply is applied. Ensure all input power supply is disconnected before wiring and checking and always wait for at least the time designated on the VFD or until the DC bus voltage is less than 36V.

  • Page 10: Commissioning And Operation

    Ecowatt ® Drive K120 series Safety precautions  R, S and T are the input terminals of the power supply, while U, V and W are the motor terminals. Please connect the input power cables and motor cables with proper techniques; otherwise, the damage to the VFD may occur. 1.3.2 Commissioning and operation ...

  • Page 11: What To Do After Scrapping

    Ecowatt ® Drive K120 series Safety precautions 1.3.4 What to do after scrapping  The heavy metals inside the VFD should be treated as industrial effluent.  When the life cycle ends, the product should enter the recycling system. Dispose of it separately at an appropriate collection point but not place it in the normal waste stream.

  • Page 12: Product Overview

    Kruger offices. 4. Check whether the name plate of the VFD is consistent with the model identifier on the exterior surface of the packing box. If no, contact local dealers or Kruger offices. 5. Check whether the accessories (including user's manual and control keypad) inside the packing box are complete.

  • Page 13: Installation Confirmation

    3. Check whether the altitude of the VFD in actual use exceeds 1000m. If it exceeds 1000m, derate 1% for every increase of 100m. When the altitude exceeds 3000m, consult the local Kruger dealer or office for details. 4. Check whether the humidity of the actual usage site exceeds 90% and condensation occurs.

  • Page 14: Basic Commissioning

    Ecowatt ® Drive K120 series Product overview 2.1.5 Basic commissioning Complete the basic commissioning as follows before the actual use of the VFD: 1. Autotuning. If possible, de-coupled from the motor load to start dynamic autotuning. Or if not, static autotuning is available. 2.
  • Page 15 -10–+50°C; derating is required if the ambient environment temperature exceeds 40°C. Below 1000m. When the altitude exceeds 1000m, derate by 1% Altitude for every increase of 100m. When the altitude exceeds 3000m, consult the local Kruger dealer or office for details.

  • Page 16: Product Nameplate

    Output: AC 3PH 0-Uinput 10A 0Hz-400Hz S/N: Made in China Kruger Ventilation Industries Asia Co., Ltd. Figure 2-1 Product nameplate Note: This is a nameplate example of a standard VFD product. The CE/TUV/IP20 marking on the top right will be marked according to actual certification conditions.

  • Page 17: Rated Specifications

    Ecowatt ® Drive K120 series Product overview Field Description Content Voltage Voltage 2: AC 1PH 220V(-15%)–240V(+10%) ③ class class 2.5 Rated specifications Voltage Output power Input current Output current Model class (kW) K120-0R4G-2 K120-0R7G-2 0.75 1PH 220V K120-1R5G-2 15.7 K120-2R2G-2 K120-004G-2 1PH 220V 2.6 Structure diagram...
  • Page 18 Ecowatt ® Drive K120 series Product overview Item Description Protect the inner components and fix the cables of Trunking board the main circuit. See section 2.3 "Product nameplate" for detailed Product nameplate information. Potentiometer knob Refer to Chapter 4 "Keypad operation procedure". See Chapter 3 "Installation guidelines"...
  • Page 19 Ecowatt ® Drive K120 series Product overview Item Description Keypad port Connect the keypad. Cover Protect the internal parts and components. Keypad Refer to Chapter 4 "Keypad operation procedure". Cooling fan See Chapter 6 "Fault tracking" for detailed information. See section 2.3 "Product nameplate" for detailed Product nameplate information.

  • Page 20: Installation Guidelines

    VFD.  Installation must be designed and done according to applicable local laws and regulations. Kruger does not assume any liability whatsoever for any installation which breaches local laws and regulations. If recommendations given by Kruger are not followed, the VFD may experience problems that the warranty does not cover.

  • Page 21: Installation Direction

     When the altitude exceeds 1000m, derate by 1% for every Altitude increase of 100m.  When the altitude exceeds 3000m, consult the local Kruger dealer or office for details. Vibration The max. amplitude of vibration should not exceed 5.8m/s (0.6g).

  • Page 22: Installation Mode

    Ecowatt ® Drive K120 series Installation guidelines 3.1.3 Installation mode 1. Wall and rail mounting for the VFDs (1PH 220V, ≤2.2KW) a) Wall mounting b) Rail mounting Figure 3-1 Installation mode Note: The minimum space of A and B is 100mm if H is 36.6mm and W is 35.0mm. 2.

  • Page 23: Standard Wiring

    Ecowatt ® Drive K120 series Installation guidelines 3.2 Standard wiring 3.2.1 Wiring of main circuit Braking resistor Output reactor Input reactor 220V(-15%)~ Output 240V(+10%) filter Input 50/60Hz filter Fuse Figure 3-3 Wiring of main circuit Note:  The fuse, braking resistor, input reactor, input filter, output reactor, output filter are optional parts.

  • Page 24: Wiring Procedure Of The Main Circuit Terminals

     Route the motor cables, input power cables and control cables separately.  Kruger series VFDs cannot share the DC bus with CH series VFDs.  When sharing the DC bus, the VFDs must be the same in power and must be simultaneously powered on or off.

  • Page 25: Wiring Of Control Circuit

    Ecowatt ® Drive K120 series Installation guidelines 3.2.4 Wiring of control circuit Multi-function input terminal Y1 output Multi-function input terminal 2 Analog output Multi-function input 0-10V/0-20mA terminal 3 Multi-function input terminal 4 Analog output 0-10V/0-20mA High speed pulse input and open collector input are available for choice Twisted pair...
  • Page 26 Ecowatt ® Drive K120 series Installation guidelines Function Type Terminal Technical specifications description 485+ RS485 RS485 communication terminal, Communication communication 485- using the Modbus protocol.  Internal impedance: 3.3kΩ  Accept 12–30V voltage input Digital input  The terminal is the bi-directional input terminal ...

  • Page 27: Input/Output Signal Connection Diagram

    Ecowatt ® Drive K120 series Installation guidelines Function Type Terminal Technical specifications description  Input range: AI2 voltage/current can choose 0–10V / 0–20mA; AI3: -10V – +10V.  Input impedance: 20kΩ during voltage input; 500Ω during current input. Analog input ...

  • Page 28: Wiring Protection

    Ecowatt ® Drive K120 series Installation guidelines U-shaped tag between 24V and PW Figure 3-9 Position of U-type short connector If input signal comes from NPN transistors, set the U-type short connector based on the power used according to the following figure. + 24V +24V + 24V...

  • Page 29: Protecting The Motor And Motor Cable

    Ecowatt ® Drive K120 series Installation guidelines Input cable(single phase) Fuse Figure 3-12 Fuse configuration Note: Select the fuse according to operation manual. During short-circuit, the fuse will protect input power cables to avoid damage to the VFD; when internal short-circuit occurred to the VFD, it can protect neighboring equipment from being damaged.

  • Page 30: Keypad Operation Procedure

    Ecowatt ® Drive K120 series Keypad operation procedure 4 Keypad operation procedure 4.1 Keypad introduction You can use the keypad to control the start and stop, read status data, and set parameters of the VFD. The keypad can be externally connected to the VFD, which requires a network cable with a standard RJ45 crystal head as the connection cable.
  • Page 31 Ecowatt ® Drive K120 series Keypad operation procedure Serial Name Description VFD running status indicator. LED off: The VFD is stopped. RUN/TUNE LED blinking: The VFD is autotuning parameters. LED on: The VFD is running. Forward or reverse running indicator. FWD/REV LED off: The VFD is running forward.
  • Page 32 Ecowatt ® Drive K120 series Keypad operation procedure Serial Name Description Five-digit LED displays various monitoring data and alarm codes such as the frequency setting and output frequency. Corres Corres Corres Corres Displayed Displayed Displayed Displayed -ponding -ponding -ponding -ponding word word word...

  • Page 33: Keypad Display

    Ecowatt ® Drive K120 series Keypad operation procedure Serial Name Description AI1. When the external common keypad (without the function of parameter copy) is valid, the difference between the local keypad AI1 and the external keypad AI1 is: When the external keypad AI1 is Analog set to the Min.

  • Page 34: Displaying Fault Information

    Ecowatt ® Drive K120 series Keypad operation procedure It is shown in Figure 4-3. In running state, there are 24 parameters that can be selected for display, including running frequency, set frequency, bus voltage, output voltage, output current, running speed, output power, output torque, PID reference value, PID feedback value, input terminal status, output terminal status, torque setting, length value, PLC and the current step of multi-step speed, AI1, AI2, AI3, high-speed pulse HDI frequency, motor overload percentage, VFD overload percentage, ramp reference value, linear speed, and AC input...

  • Page 35: Setting A Password For The Vfd

    Ecowatt ® Drive K120 series Keypad operation procedure 3. Function code setting (level-3 menu) Note: When performing operations on the level-3 menu, you can press the PRG/ESC or DATA/ENT key to return to the level-2 menu. If you press the DATA/ENT key, the set value of the parameter is saved to the control board first, and then the level-2 menu is returned, displaying the next function code.

  • Page 36: Viewing Vfd Status

    Ecowatt ® Drive K120 series Keypad operation procedure The units place is blinking All digits are blinking The units place is blinking DATA DATA DATA The units place is blinking The units place is blinking The units place is blinking Note: When setting the value, you can press modify the value.

  • Page 37: Function Parameter List

    Ecowatt ® Drive K120 series Function parameter list 5 Function parameter list The function parameters of K120 series VFD have been divided into 30 groups (P00–P29) according to the function, of which P18–P28 are reserved. Each function group contains certain function codes. A three-level menu style is applied to function codes. For example, "P08.08"...

  • Page 38: P00 Group Basic Functions

    Ecowatt ® Drive K120 series Function parameter list modify the factory parameters. Incorrect parameter setting may cause operation exceptions or even damage to the VFD.) If password protection is not in locked state, you can change the password any time. You can set P07.00 to 0 to cancel the user password.
  • Page 39 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code start, stop, forward/reverse rotating, jogging, and fault reset. 0: Keypad (the "LOCAL/REMOT" indicator is off) The running commands are controlled through keypad keys, such as the RUN STOP/RST keys.
  • Page 40 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code The lower limit of the running frequency is the lower limit of the output frequency of the VFD, When the set frequency is lower than the Lower limit lower limit of the running frequency, the P00.05...
  • Page 41 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code terminals. The VFD provides 1 high speed pulse input as the standard configuration. Range of pulse frequency: 0.00–50.00kHz. 100.0% of the high speed pulse input setting corresponds to the max. output frequency (P00.03) in forward direction while -100.0% corresponds to the max.
  • Page 42 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code PID control when P00.06=7 or P00.07=7. It is necessary to set P09. The running frequency of the VFD is the value after PID effect. See P09 for the detailed information of the preset source, preset value and feedback source of PID.
  • Page 43 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code When A and B frequency commands select the keypad for setting, the value of Frequency the function code is the original setting P00.10 set through 50.00Hz ○...
  • Page 44 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code 2: Forbid to run in reverse direction, it can be used in some special cases if the reverse running is disabled. Carrier Electro magnetic Noise and leakage Heating frequency noise...
  • Page 45 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code default carrier frequency, the VFD needs to derate by 10% for each increase of 1k carrier frequency. Setting range: 1.0–15.0kHz 0: No operation 1: Rotary autotuning. Comprehensive motor parameter autotuning.

  • Page 46: P01 Group Start And Stop Control

    Ecowatt ® Drive K120 series Function parameter list P01 group Start and stop control Function Name Description Default Modify code 0: Direct start: start from the starting frequency P01.01. 1: Start after DC braking: start the motor from the starting frequency after DC braking (set the parameter P01.03 and P01.04).
  • Page 47 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code The VFD performs DC braking with the braking braking current before start and it speeds up P01.03 current after the DC braking time. If the DC braking 0.0% ◎...
  • Page 48 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code Wait time determined by P01.09. before DC Wait time before DC braking for stop: The P01.10 0.00s ○ braking VFD blocks the output before starting DC for stop braking.
  • Page 49 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code The function code is used to set the FWD/REV switching threshold of the VFD. running 0: Switch at zero frequency P01.14 ◎ switching 1: Switch at the starting frequency mode 2: Switch after the speed reaches the stop speed with a delay...
  • Page 50 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code considered as valid during power-on, the VFD is started automatically after the initialization. Note: Exercise caution before using this function. Otherwise, serious result may follow. Action selected when The function code determines the running...

  • Page 51: P02 Group Motor 1 Parameters

    Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code The function code indicates whether the VFD automatically runs after re-power on. Restart 0: Disable P01.21 after ○ 1: Enable. If the restart condition is met, the power-off VFD will run automatically after waiting the time defined by P01.22.
  • Page 52 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code Rated The function code is used to Model P02.01 power of 0.1–3000.0kW set parameters of the ◎ depended AM 1 controlled asynchronous Rated 0.01Hz–P00.03 motor. P02.02 frequency (Max.
  • Page 53 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code reference parameters for Leakage Model high-performance vector P02.08 inductanc 0.1–6553.5mH ○ depended control, directly affecting the e of AM 1 control performance. Mutual Model Note: Do not modify these P02.09 inductanc 0.1–6553.5mH...
  • Page 54 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code Number of P02.15–P02.19 correctly P02.17 pole pairs 1–50 according to the information ◎ of SM 1 on the nameplate of the synchronous motor. Rated Model The K120 series VFD P02.18 voltage of 0–1200V...
  • Page 55 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code be updated by change the value of P02.23. autotuning, When P00.15=2 (static please count autotuning), the set value of according to P02.23 cannot be updated by the following autotuning.
  • Page 56 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code E=P/(√3×I) In the above formulas: n the rated rotation speed, P is the rated power and I is the rated current. Setting range: 0–10000 Initial pole position of P02.24 0x0000–0xFFFF...
  • Page 57 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code Motor overload multiples M=Iout/(In*K) In is rated motor current, lout is VFD output current, K is motor overload protection coefficient. A smaller value of K indicates a bigger value of M.

  • Page 58: P03 Group Vector Control

    Ecowatt ® Drive K120 series Function parameter list P03 group Vector control Function Name Description Default Modify code The parameters P03.00–P03.05 are applicable Speed loop only to vector control mode. Below the P03.00 proportion 20.0 ○ switching frequency (P03.02), al gain 1 speed-loop PI parameters are: P03.00 and Speed loop P03.01.
  • Page 59 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code Speed-loop P03.06 output 0–8 (corresponding to 0–2 /10ms) ○ filter Electromot ive slip compensat P03.07 100% ○ Slip compensation coefficient is used to coefficient adjust the slip frequency of the vector control of vector and improve the speed control accuracy of control...
  • Page 60 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code Torque set Setting range: -300.0%–300.0% (of the rated P03.12 through 50.0% ○ motor current) keypad Torque P03.13 reference 0.000–10.000s 0.010s ○ filter time Setting source of forward 0: Keypad (P03.16 sets the value when rotation...
  • Page 61 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code Setting This function codes are used to select the source of setting sources of electromotive and braking P03.18 electromoti torque upper limits. ○ ve torque 0: Keypad (P03.20 sets P03.18 and P03.21 sets upper limit P03.19) 1: AI1...
  • Page 62 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code flux-weakening curvature by modifying the flux-weakening control coefficient. larger the coefficient, the steeper the curve, the smaller the coefficient, the smoother the curve. P03.22 is valid only for vector mode 1. Setting range of P03.22: 0.1–2.0 Setting range of P03.23: 10% –100.0% Max.

  • Page 63: P04 Group Svpwm Control

    Ecowatt ® Drive K120 series Function parameter list P04 group SVPWM control Function Name Description Default Modify code This group of function code defines the V/F curve of motor 1 to meet the needs of different loads. 0: Straight-line V/F curve, applicable to constant torque loads 1: Multi-point V/F curve 2: Torque-down V/F curve (power of 1.3)
  • Page 64 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code You need to select torque boost based on the load. For example, larger load requires larger torque boost, however, if the torque boost is large, motor will over-excitation, which may cause increased output current and motor overheating, thus...
  • Page 65 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code Output voltage frequency P04.07 00.00Hz ○ point 3 of motor 1 Output frequency Setting range of P04.03: 0.00Hz –P04.05 Setting range of P04.04: 0.0%–110.0% (of rated voltage of motor 1) voltage P04.08...
  • Page 66 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code frequency vibration P04.10 ○ In space voltage vector control mode, the control motor, especially the large-power motor, may factor of experience current oscillation at certain motor 1 frequencies, which may cause unstable High motor running, or even VFD overcurrent.
  • Page 67 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code voltage P04.19 00.0% ○ point 2 of motor 2 frequency P04.20 00.00Hz ○ point 3 of motor 2 voltage P04.21 00.0% ○ point 3 of motor 2 V/F slip compensat P04.22...
  • Page 68 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code Select the output voltage setting channel at V/F curve separation. 0: Keypad (Output voltage is determined by P04.28.) 1: AI1 2: AI2 Voltage 3: AI3 P04.27 setting ○...

  • Page 69: P05 Group Input Terminals

    Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code The function code is used to adjust the output voltage of the VFD in SVPWM mode during flux-weakening. Note: This parameter is invalid in the constant torque mode. Weakening coefficient Output voltage V...
  • Page 70 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code 17: Multi-step speed terminal 2 terminal 18: Multi-step speed terminal 3 P05.06 ◎ function 19: Multi-step speed terminal 4 selection 20: Pause multi-step speed running 21: ACC/DEC time selection 1 22: ACC/DEC time selection 2 terminal P05.07...
  • Page 71 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code BIT8 BIT7 BIT6 BIT5 BIT4 BIT3 BIT2 BIT1 BIT0 Setting range: 0x000 –0x1FF The function code is used to set the filter time for S1–S8 and HDI. In strong interference Digital P05.11 cases,...
  • Page 72 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code Running FWD REV command Stopping Forward running Stopping Reverse running 2: 3-wire control 1; This mode defines Sin as the enabling terminal, and the running command is generated by FWD, while the direction is controlled by REV.
  • Page 73 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code Sin: Three-wire control; FWD: Forward running; REV: Reverse running 3: Three-wire control 2. This mode defines Sin as the enabling terminal, and the running command is generated by FWD or REV, but the direction is controlled by both FWD and REV.
  • Page 74 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code the control terminal FWD/REV is still valid. To make the VFD run, you need to trigger FWD/REV again, example, single-cycle stop, fixed-length stop, and valid STOP/RST stop during terminal control. (See P07.04).
  • Page 75 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code P05.25 switch-off 0.000s ○ delay P05.26 switch-on 0.000s ○ delay P05.27 switch-off 0.000s ○ delay P05.28 switch-on 0.000s ○ delay P05.29 switch-off 0.000s ○ delay P05.30 switch-on 0.000s ○...
  • Page 76 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code Correspond Corresponding setting 100% ing setting P05.38 of the 0.0% ○ lower limit -10V of AI2 20mA Upper limit AI1/AI2 P05.39 10.00V ○ of AI2 -100% Correspond Input filter time: This parameter is used to ing setting...

  • Page 77: P06 Group Output Terminals

    Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code The function is selected when HDI terminal is high-speed pulse input. 0: Frequency setting input, frequency setting high-speed source P05.49 pulse input ◎ 1: Counter input, high-speed pulse counter function input terminals selection...
  • Page 78 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code The max. frequency of pulse is 50.00kHz. For details about the related functions, see P06.27–P06.31. 1: Open collector output. For details about the related functions, see P06.02. Y1 output 0: Invalid P06.01 ○...
  • Page 79 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code P06.06 switch-on Setting range: 0.000–50.000s 0.000s ○ delay P06.07 switch-off Setting range: 0.000–50.000s 0.000s ○ delay P06.10 switch-on 0.000s ○ The function code defines the delay time delay corresponding to the electrical level changes when the programmable output terminals...
  • Page 80 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code 14: Value 1 set through Modbus communication Value through Modbus communication 16–21: Reserved 22: Torque current (relative to triple the rated current of the motor) 23: Ramp reference frequency (with sign) 24–30: Reserved Lower P06.17...

  • Page 81: P07 Group Hmi

    Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code AO2 output P06.26 0.000s ○ filter time P07 group HMI Function Name Description Default Modify code 0–65535 When you set the function code to a non-zero number, password protection is enabled.
  • Page 82 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code to local address (excluding the motor parameter of P02 group) 4: Download the keypad function parameters to local address (only for the motor parameter of P02 group) Note: After the parameter is set to 1, 2, 3 or 4, and the operation is executed, the parameter automatically...
  • Page 83 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code Sequence When P07.02=6, set the sequence of switching running-command channels by switching pressing this key. running-co P07.03 0: Keypad→Terminal→Communication ○ mmand 1: Keypad←→Terminal channels 2: Keypad←→Communication by pressing 3: Terminal←→Communication QUICK/JOG...
  • Page 84 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code 0x0000–0xFFFF BIT0: AI1 (V on) BIT1: AI2 (V on) Selection 2 BIT2: AI3 (V on) BIT3: High-speed pulse HDI frequency parameters BIT4: Motor overload percentage (% on) P07.06 0x0000 ○...
  • Page 85 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code Linear 0.1–999.9% speed P07.10 1.0% Linear speed = (Mechanical rotation speed) × ○ display P07.10 coefficient Temperatu re of P07.11 rectifier -20.0–120.0°C ● bridge module Temperatu re of P07.12 -20.0–120.0°C...
  • Page 86 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code Factory bar P07.22 0x0000–0xFFFF ● code 2 Factory bar P07.23 0x0000–0xFFFF ● code 3 Factory bar P07.24 0x0000–0xFFFF ● code 4 Factory bar P07.25 0x0000–0xFFFF ● code 5 Factory bar P07.26...
  • Page 87 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code 25: Electronic overload (OL3) 26: Keypad communication error (PCE) 27: Parameter upload error (UPE) 28: Parameter download error (DNE) 29–31: Reserved 32: To-ground short-circuit fault 1 (ETH1) 33: To-ground short-circuit fault 2 (ETH2) 34: Speed deviation fault (dEu) 35: Mal-adjustment fault (STo)
  • Page 88 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code Input terminal P07.39 status at ● present fault Output current P07.40 status at ● present fault Running P07.41 frequency 0.00Hz ● at last fault Ramp reference P07.42 0.00Hz ●...
  • Page 89 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code Running frequency P07.49 0.00Hz ● at 2nd-last fault Ramp reference frequency P07.50 0.00Hz ● 2nd-last fault Output voltage at P07.51 ● 2nd-last fault Output current at P07.52 0.0A ●...

  • Page 90: P08 Group Enhanced Functions

    Ecowatt ® Drive K120 series Function parameter list P08 group Enhanced functions Function Name Description Default Modify code Model P08.00 ACC time 2 ○ depended Model P08.01 DEC time 2 Refer to P00.11 and P00.12 for detailed ○ depended definition. Model P08.02 ACC time 3 The VFD has four groups of ACC/DEC time...
  • Page 91 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code Jump Set frequency f frequency P08.13 0.00Hz ½* jump frequency ○ Jump amplitude 3 frequency 3 ½* jump frequency amplitude 3 ½* jump frequency Jump amplitude 2 frequency 2 ½* jump frequency amplitude 2...
  • Page 92 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code the VFD runs at the wobbling frequency. Rise time of wobbling frequency: Time needed for the VFD to run from the lowest point to the highest one. Fall time of wobbling frequency: The time needed for the VFD to from the highest point to the lowest one.
  • Page 93 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code Pre-set running time of the VFD. When the accumulative running time achieves the set time, the multi-function digital output P08.27 running 0min ○ terminals will output the signal of "Running time time reached".
  • Page 94 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code Output frequency f electrical FDT lag level FDT2 lagging Y, RO1, P08.35 5.0% ○ Time t detection value Setting range of P08.32: 0.00Hz–P00.03 (Max. output frequency) Setting range of P08.33: 0.0–100.0% (FDT1 electrical level) Setting range of P08.34: 0.00Hz–P00.03 (Max.
  • Page 95 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code The function code is used to control enabling Enabling of the brake tube action inside the VFD. energy 0: Disable P08.37 ○ consumpti 1: Enable on braking Note: It is only applicable to VFD models that are built in braking tubes.
  • Page 96 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code 2: Only analog potentiometer adjustments is valid Neither ∧ / ∨ keys digital potentiometer adjustments are valid Tens place: Frequency control selection 0: Only valid when P00.06=0 or P00.07=0 1: Valid for all frequency setting methods 2: Invalid for multi-step speed running when multi-step speed running has the priority...
  • Page 97 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code terminal frequency P08.45 0.01–50.00Hz/s 0.50 Hz/s ○ incremental change rate DOWN terminal frequency P08.46 0.01–50.00Hz/s 0.50 Hz/s ○ decremental change rate 0x000–0x111 Ones place: Action selection at power-off during frequency adjusting through digitals.

  • Page 98: P09 Group Pid Control

    Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code 100–150: A greater coefficient indicates greater braking strength. The VFD can quickly slow down the motor by increasing the magnetic flux. The energy generated by the motor during braking can transformed into heat...
  • Page 99 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code 6: Modbus communication 7–9: Reserved The set target of process PID is a relative value, for which 100% equals to 100% of the feedback signal of the controlled system. The system always calculates a related value (0–100.0%).
  • Page 100 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code The function is applied to the proportional gain P of PID input. P determines the strength of the whole PID adjuster. The value 100 indicates that when High the difference between the PID feedback frequency...
  • Page 101 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code It means the sampling cycle of feedback. The regulator operates once during each Sampling P09.07 sampling cycle. The larger the sampling 0.100s ○ cycle (T) cycle, the slower the response. Setting range: 0.000–10.000s It is the max.
  • Page 102 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code Output frequency f t1< t2, so the VFD continues running t2=P09.12 PIDE P09.11 Time t Running Fault output PIDE Setting range of P09.11: 0.0–100.0% Setting range of P09.12: 0.0–3600.0s 0x0000–0x1111 Ones place: Continue...

  • Page 103: P10 Group Simple Plc And Multi-Step Speed Control

    Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code 1: Limit based on A frequency Thousands place: 0: A+B frequency, ACC/DEC of main reference A frequency source buffering is invalid 1: A+B frequency, ACC/DEC of main reference A frequency source buffering is valid, ACC and DEC are determined by P08.04 (ACC time frequency...
  • Page 104 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code step 0 Setting range of the running time in 0 –15 Multi-step sections are 0.0–6553.5s (min), the time unit P10.04 0.0% ○ speed 1 is determined by P10.37. Running When simple PLC operation is selected, it is time of...
  • Page 105 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code Multi-step P10.20 Output frequency 0.0% ○ speed 9 Running time of P10.21 0.0s ○ step 9 Multi-step P10.22 0.0% ○ speed 10 Terminal 1 Running time of P10.23 0.0s ○...
  • Page 106 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code Function ACC/ ACC/ ACC/ ACC/ Binary bit Step code DEC 1 DEC 2 DEC 3 DEC 4 BIT1 BIT0 BIT3 BIT2 BIT5 BIT4 BIT7 BIT6 P10.34 BIT9 BIT8 BIT11 BIT10...

  • Page 107: P11 Group Protection Parameters

    Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code 0: Second; the running time of each step is Multi-step counted in seconds; P10.37 time unit ◎ 1: Minute; the running time of each step is selection counted in minutes.
  • Page 108 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code 0: Disable 1: Enable DC bus voltage V Overvoltage stall Overvoltage threshold P11.03 stall ○ Time t protection Output frequency Time t Overvoltage 110–150% (standard bus voltage) (380V) 130% stall P11.04...
  • Page 109 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code detected to be lower than the current-limit level again, it will continue accelerated running. Output current A Current-limit threshold Time t Output frequency f frequency Constant Acceleration speed Time t...
  • Page 110 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code 1: VFD overload/underload pre-alarm, relative to rated VFD current. Tens place: 0: The VFD continues running after overload/underload alarm; 1: The VFD continues running after underload alarm, and stops running after overload fault;...

  • Page 111: P13 Group Sm Control

    Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code The function code is used to set the speed deviation detection time. Speed Actual detection Speed value deviation Set detection P11.15 0.5s ○ value detection time Time t Running Fault output...
  • Page 112 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code Pull-in current is the pole positioning current. Pull-in current 2 is valid within the upper limit of pull-in current switchover Pull-in P13.03 10.0% frequency threshold. Generally, you do not ○...

  • Page 113: P14 Group Serial Communication

    Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code High-frequ The function code is valid when the motor ency speed exceeds the rated speed. If motor P13.12 compensat oscillation occurred, adjust the function code 0.0% ○...
  • Page 114 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code 1: 2400BPS 2: 4800BPS 3: 9600BPS 4: 19200BPS 5: 38400BPS 6: 57600BPS Note: The baud rate set on the VFD must be consistent with that on the upper computer. Otherwise, communication fails.

  • Page 115: P17 Group Status Viewing

    Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code communication fault" (CE) communication interval exceeds the value. In general, the function code is set to 0.0. When continuous communication required, you can set the function code to monitor communication status.
  • Page 116 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code Displays the valid value of current output Output P17.04 0.0A current of the VFD. ● current Range: 0.0–3000.0A Motor Displays current motor speed. P17.05 0 RPM ●...
  • Page 117 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code Displays current digital output terminal state Digital of the VFD. output BIT3 BIT2 BIT1 BIT0 P17.13 ● terminal Reserved state Range: 0000–000F Digital Displays the adjustment value of the keypad. P17.14 adjustment 0.00Hz...
  • Page 118 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code Current Displays current running time of the VFD. P17.26 running 0min ● Range: 0–65535min time Simple PLC current Displays simple PLC and current step number step of multi-step speed P17.27 ●...
  • Page 119 Ecowatt ® Drive K120 series Function parameter list Function Name Description Default Modify code Displays the valid value of incoming current P17.35 incoming on AC side. 0.0A ● current Range: 0.0–5000.0A Display output torque value, during forward running, positive value is motoring state, Output negative value is generating state;...

  • Page 120: Fault Tracking

    6.1.1 Periodical maintenance If the VFD is installed in an environment that meets requirements, little maintenance is needed. The following table describes the routine maintenance periods recommended by Kruger. For more detailed information on maintenance, please contact us. Subject Item...
  • Page 121 Ecowatt ® Drive K120 series Fault tracking Subject Item Method Criterion No exception occurs. Note: Discoloration of Check whether there are Visual copper bars stains and dust attached. inspection does not mean that they cannot work properly. Check whether the conductors are deformed or Visual No exception...
  • Page 122 Ecowatt ® Drive K120 series Fault tracking Subject Item Method Criterion Auditory, Check whether there is Transformer olfactory, and No exception unusual vibration sounds or and reactor visual occurs. smells. inspection Ensure whether there are Auditory No exception vibration sounds in the Electromagnetic inspection occurs.

  • Page 123: Cooling Fan

    The increase of the bearing noise indicates a fan fault. If the VFD is applied in a key position, replace the fan once the fan starts to generate unusual noise. You can purchase spare parts of fans from Kruger.  Read the safety precautions carefully and follow the instructions to perform operations.

  • Page 124: Capacitor

    Ecowatt ® Drive K120 series Fault tracking Air direction Rotation direction Air direction Figure 6-2 Fan maintenance for 1PH 220V, 4kW model 5. Power on the VFD. 6.1.3 Capacitor 6.1.3.1 Capacitor reforming If the VFD has been left unused for a long time, you need to follow the instructions to reform the DC bus capacitor before using it.

  • Page 125: Power Cable

    VFD at the last three faults, respectively. This chapter covers most of the alarms and faults, and their possible causes and corrective measures, if users cannot figure out the alarm or fault causes, contact local Kruger office. -118-...

  • Page 126: Fault Reset

    When a fault occurred, handle the fault as follows. 1. When a VFD fault occurred, confirm whether keypad display is improper? If yes, contact Kruger. 2. If keypad works properly, check the function codes in P07 group to confirm the corresponding fault record parameters, and determine the real state when current fault occurred through parameters.
  • Page 127 Ecowatt ® Drive K120 series Fault tracking Fault Fault type Possible cause Solution code Overcurrent  VFD power is too small.  Select the VFD with during  Load transient or larger power. deceleration exception occurred.  Check if the load is ...
  • Page 128 Ecowatt ® Drive K120 series Fault tracking Fault Fault type Possible cause Solution code Rectifier  Air duct is blocked or fan module is damaged.  Ventilate the air duct or overheat  Ambient temperature is replace the fan. Inverter too high.
  • Page 129 Ecowatt ® Drive K120 series Fault tracking Fault Fault type Possible cause Solution code  Press STOP/RST to  R/W error occurred to the EEPROM reset. control parameters. operation fault  Replace the main  EEPROM is damaged control board ...

  • Page 130: Other States

    Ecowatt ® Drive K120 series Fault tracking Fault Fault type Possible cause Solution code  The keypad wire is  Check the surroundings poorly contacted or to rule out interference disconnected. source. Parameter  The keypad wire is too  Replace the hardware download error long and suffers strong and ask for...

  • Page 131: Communication Protocol

    Ecowatt ® Drive K120 series Communication protocol 7 Communication protocol 7.1 Brief instruction to Modbus protocol Modbus protocol is a software protocol and common language which is applied in the electronic controller. With this protocol, the controller (device) can communicate with other devices via network (the channel of signal transmission or the physical layer, such as RS485).

  • Page 132: Application Of The Vfd

    Ecowatt ® Drive K120 series Communication protocol 7.2 Application of the VFD The VFD uses the Modbus RTU mode and the physical layer is 2-wire RS485. 7.2.1 2-wire RS485 2-wire RS485 interfaces works in half-duplex mode and send data signals in the differential transmission way, which is also referred to as balanced transmission.
  • Page 133 Ecowatt ® Drive K120 series Communication protocol USB-RS485 converter is used, use a short cable when possible. When the wiring is completed, select the correct port (for example, COM1 to connect to the RS232-RS485 converter) for the upper computer of the PC, and keep the settings of basic parameters such as communication baud rate and data check bit consistent with those of the VFD.

  • Page 134: Rtu Mode

    Ecowatt ® Drive K120 series Communication protocol Main control device 32 # 15 # Figure 7-3 Star connection Use shielded cables, if possible, in multi-VFD connection. The baud rates, data bit check settings, and other basic parameters of all the devices on the RS485 line must be set consistently, and addresses cannot be repeated.
  • Page 135 Ecowatt ® Drive K120 series Communication protocol In a character frame, only the data bits carry information. The start bit, check bit, and stop bit are used to facilitate the transmission of the data bits to the destination device. In practical applications, you must set the data bits, parity check bits, and stop bits consistently.
  • Page 136 Ecowatt ® Drive K120 series Communication protocol 7.2.2.2 RTU communication frame error check modes During the transmission of data, errors may occur due to various factors (such as electromagnetic interference). For example, if the sending message is a logic "1", A-B potential difference on RS485 should be 6V, but in reality, it may be -6V because of electromagnetic interference, and then the other devices take the sent message as logic "0".
  • Page 137 Ecowatt ® Drive K120 series Communication protocol added to the frame. The receiver calculates the CRC of the received frame, and compares the result with the value in the received CRC domain. If the two CRC values are not equal to each other, errors occur in the transmission. During CRC, 0xFFFF is stored first, and then a process is invoked to process a minimum of 6 contiguous bytes in the frame based on the content in the current register.

  • Page 138: Rtu Command Code And Communication Data

    Ecowatt ® Drive K120 series Communication protocol In the ladder logic, CKSM uses the table look-up method to calculate the CRC value according to the content in the frame. The program of this method is simple, and the calculation is fast, but the ROM space occupied is large. Use this program with caution in scenarios where there are space occupation requirements on programs.

  • Page 139: Command Word 06H, Writing A Word

    Ecowatt ® Drive K120 series Communication protocol "START" and "END" are "T1-T2-T3-T4 (time gap with a min. length of 3.5 bytes)", indicating that a time gap with a mini. length of 3.5 bytes must be kept before RS485 communication is executed. The time gap is used to distinguish one message from another so that the two messages are not regarded as one message.

  • Page 140: Command Code 08H, Diagnosis

    Ecowatt ® Drive K120 series Communication protocol For example, to write 5000 (1388H) to 0004H of the VFD whose slave address is 02H, the frame structures are described in the following. RTU master command (sent from the RTU slave response (sent from the VFD to master to the VFD) the master) START...

  • Page 141: Command Code 10H, Continuous Writing

    Ecowatt ® Drive K120 series Communication protocol RTU master command RTU slave response Data content Data content high-order bit high-order bit Data content Data content low-order bit low-order bit CRC CHK low-order CRC CHK low-order bit CRC CHK high-order CRC CHK high-order T1-T2-T3-T4 T1-T2-T3-T4 7.3.4 Command code 10H, continuous writing...

  • Page 142: Data Address Definition

    Ecowatt ® Drive K120 series Communication protocol RTU slave response (sent from the VFD to the master) T1-T2-T3-T4 (time gap with a min. START length of 3.5 bytes) ADDR High-order bit of data writing address Low-order bit of data writing address Data number high-order bit Data number low-order bit CRC low-order bit...

  • Page 143: Description Of Other Function Addresses

    Ecowatt ® Drive K120 series Communication protocol Note:  The parameters in the P29 group are set by the manufacturer and cannot be read or modified. Some parameters cannot be modified when the VFD is running; some cannot be modified regardless of the VFD status. Pay attention to the setting range, unit, and description of a parameter when modifying it.
  • Page 144 Ecowatt ® Drive K120 series Communication protocol Function Address Data description characteristics Setting of the upper limit of the 2006H reverse running frequency (0–Fmax, unit: 0.01 Hz) Upper limit of the electromotion 2007H torque (0–3000, 1000 corresponding to 100.0% of the motor rated current) Upper limit of the brake torque 2008H (0–3000,...
  • Page 145 Ecowatt ® Drive K120 series Communication protocol Function Address Data description characteristics Bit0: =0: Not ready to run =1: Ready to run Bi1–2: =00: Motor 1 =01: Motor 2 =10: Reserved =11: Reserved Bit3: =0: Asynchronous motor VFD status word 2 2101H Synchronous motor Bit4: =0: No overload alarm =1:...
  • Page 146 Ecowatt ® Drive K120 series Communication protocol Function Address Data description characteristics 0.00–10.00V (Unit: Analog input 1 300CH 0.01V) 0.00–10.00V (Unit: Analog input 2 300DH 0.01V) -10.00 10.00V – Analog input 3 300EH (Unit: 0.01V) Analog input 4 300FH Reserved Read input of 0.00–50.00kHz 3010H...

  • Page 147: Fieldbus Scale

    Meaning Meaning bits of code bits of code Kruger K120 vector VFD Note: A device code consists of 16 bits, with eight high-order bits and eight low-order bits. Eight high-order bits indicates the motor series, and eight low-order bits indicates the derivative model.

  • Page 148: Error Message Response

    Ecowatt ® Drive K120 series Communication protocol After receiving the command, the VFD converts 50 into 5.0 based on the fieldbus scale, and then sets "Wake-up-from-sleep delay" to 5.0s. For another example, after the upper computer transmits the "Wake-up-from-sleep delay" parameter read command, the master receives the following response from the VFD: Read Parameter...
  • Page 149 Ecowatt ® Drive K120 series Communication protocol Code Name Description The password entered in the password verification address is Password error different from that set in P07.00. The length of the data frame transmitted by the upper computer is incorrect, or in the RTU format, the value of the Data frame error CRC check bit is inconsistent with the CRC value calculated by the lower computer.

  • Page 150: Read/Write Operation Example

    Ecowatt ® Drive K120 series Communication protocol However, the setting range of the "Channel of running commands" is 0 to 2. The value 3 exceeds the setting range. In this case, the VFD returns an error message response as shown in the following: Exception Fault code CRC check...
  • Page 151 Ecowatt ® Drive K120 series Communication protocol Function Address Data description characteristics 0005H: Stop 0006H: Coast to stop 0007H: Fault reset 0008H: Jogging to stop The command transmitted by the master is as follows: Parameter Forward Write CRC check address address running command...

  • Page 152: Examples Of Continuously Write Command 10H

    Ecowatt ® Drive K120 series Communication protocol Write Parameter Parameter data CRC check address command address 7.5.3 Examples of continuously write command 10H Example 1: Set the VFD whose address is 01H to be forward running at the frequency of 10Hz.

  • Page 153: Common Communication Faults

    Ecowatt ® Drive K120 series Communication protocol Function Name Description Default Modify code Model P00.11 ACC time 1 ○ depended Setting range of P00.11 and P00.12: 0.0–3600.0s Model P00.12 DEC time 1 ○ depended The address of P00.11 is 000B, 10s is 0064H in the hexadecimal form, and 20s is 00C8H in the hexadecimal form.

  • Page 154: Appendix A Technical Data

    Ecowatt ® Drive K120 series Technical data Appendix A Technical data A.1 Derated application A.1.1 Capacity Choose a VFD model based on the rated current and power of the motor. To ensure the rated power of the motor, the rated output current of the VFD must be greater or equal to the rated current of the motor.

  • Page 155: Ce Marking

    When the altitude of the site where the VFD is installed is lower than 1000 m, the VFD can run at the rated power. When the altitude exceeds 1000m, derate by 1% for every increase of 100m. When the altitude exceeds 3000m, consult the local Kruger dealer or local Kruger office for details.

  • Page 156: Vfd Category Of C2

    Ecowatt ® Drive K120 series Technical data Note: The EMC standard IEC/EN 61800-3 no longer restricts the power distribution of VFDs, but it specifies their use, installation, and commissioning. Specialized personnel or organizations must have the necessary skills (including the EMC-related knowledge) for installing and/or performing commissioning on the electrical drive systems.

  • Page 157: Appendix B Dimension Drawings

    Ecowatt ® Drive K120 series Dimension drawings Appendix B Dimension drawings This chapter describes the dimension drawings of the VFD. The dimension unit used in the drawings is mm. B.1 External keypad structure Figure B-1 Keypad outer outline 42.0 17.1 19.0 48.1 19.0 62.0...

  • Page 158: Vfd Dimensions

    Ecowatt ® Drive K120 series Dimension drawings Keypad adapter bracket 1 Keypad adapter bracket 1 Installation dimensions Installation dimensions Keypad adapter bracket 2 Installation dimensions Keypad adapter bracket 2 Figure B-3 Outline and installation dimensions Installation dimensions B.2 VFD dimensions Figure B-4 Wall mounting of VFDs of 1PH 220V (≤2.2kW) -151-...
  • Page 159 Ecowatt ® Drive K120 series Dimension drawings Installation Weight Model hole (d) (kg) K120-0R4G-2 80.0 60.0 160.0 150.0 123.5 120.3 K120-0R7G-2 80.0 60.0 160.0 150.0 123.5 120.3 K120-1R5G-2 80.0 60.0 185.0 175.0 140.5 137.3 K120-2R2G-2 80.0 60.0 185.0 175.0 140.5 137.3 Figure B-5 Rail mounting of VFDs of 1PH 220V (≤2.2kW) Installation...
  • Page 160 Ecowatt ® Drive K120 series Dimension drawings Figure B-6 Wall mounting of VFDs of 1PH 220V (4kW) Installation Weight Model hole (kg) K120-015G-4 170.0 151.0 — 320.0 303.5 196.3 5.83 Installation hole Figure B-7 Flange mounting of VFDs of 1PH 220V (4kW) Installation Weight Model...

  • Page 161: Appendix C Optional Peripheral Accessories

    Ecowatt ® Drive K120 series Optional peripheral accessories Appendix C Optional peripheral accessories This chapter describes how to select optional accessories of the VFD. C.1 Wiring of peripheral accessories The following figure shows the external wiring of the VFD. Upper PC LED keypad software RUN/TUNE FWD/REV L OCAL/REMOT TRIP...
  • Page 162 Ecowatt ® Drive K120 series Optional peripheral accessories Image Name Description Cable Accessory for signal transmission. Device electric shock prevention protection against short-to-ground that may cause current leakage fire. Select residual-current circuit breakers (RCCBs) that Breaker applicable VFDs restrict high-order harmonics, and of which the rated sensitive current for one VFD is larger than 30 Accessories used...

  • Page 163: Power Supply

    Ecowatt ® Drive K120 series Optional peripheral accessories C.2 Power supply  Ensure that the voltage class of the VFD is consistent with that of the grid. C.3 Cables C.3.1 Power cables The sizes of the input power cables and motor cables must meet the local regulation. Note: If the conductivity of the shielding layer of the motor cables cannot meet the requirements, separate PE conductors must be used.

  • Page 164: Breaker And Electromagnetic Contactor

    Ecowatt ® Drive K120 series Optional peripheral accessories between the control cable and the power cable is 90 degrees.  If the inside of the motor is wet, the insulation resistance will decrease. If you think there is moisture inside the motor, dry the motor and re-measure it. C.4 Breaker and electromagnetic contactor You need to add a fuse to prevent overload.

  • Page 165: Filters

    Ecowatt ® Drive K120 series Optional peripheral accessories contact Kruger's technical support technicians. Output reactor Input reactor VFD model Input reactor Output reactor K120-0R4G-2 K120-0R7G-2 K120-1R5G-2 K120-2R2G-2 K120-004G-2 ACL2-015-4 OCL2-015-4 Note:  The rated input voltage drop of input reactors is 2%±15% while the rated output voltage drop of output reactors is 1%±15%.

  • Page 166: C3 Filter Model Selection

    Noise filters on the output side can decrease the radio noise caused by the cables between VFDs and motors and the leakage current of conducting wires. Kruger provides some of the filters for you to choose. VFD model Input filter...

  • Page 167: C3 Filter Installation Instruction

    Ecowatt ® Drive K120 series Optional peripheral accessories Note:  The input EMI meets the C3 requirements after an input filter is configured.  The preceding table describes external accessories. You need to specify the ones you choose when purchasing accessories. C.6.3 C3 filter installation instruction Install the C3 filter according to the following steps.

  • Page 168: C2 Filter Model Selection

    Ecowatt ® Drive K120 series Optional peripheral accessories Field Field description identifier Filter application environment A: Environment Category I (IEC61800-3) category C1 (EN 61800-3) B: Environment Category I (IEC61800-3) category C2 (EN 61800-3) C.6.5 C2 Filter model selection VFD model Input reactor Output reactor K120-0R4G-2...

  • Page 169: Braking Resistor Installation

    Ecowatt ® Drive K120 series Optional peripheral accessories Resistance Dissipated power of braking resistor Min. Braking applicable (kW) allowable VFD model unit for 100% brake 10% brake 50% brake 80% brake model brake torque resistance usage usage usage (Ω) (Ω) K120-0R4G-2 0.06 0.30...
  • Page 170 Ecowatt ® Drive K120 series Optional peripheral accessories External braking resistor -163-...

  • Page 171: Appendix D Further Information

    Appendix D Further information D.1 Product and service queries Should you have any queries about the product, contact the local Kruger office. Provide the model and serial number of the product you query about. You can visit www.krugerfan.com to find a list of Kruger offices.

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