Sourcetronic ST300 Series User Manual
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Sourcetronic ST300 Series User Manual

Variable-frequency drive
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User Manual
Frequency Inverter ST300

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Summary of Contents for Sourcetronic ST300 Series

  • Page 1 SOURCETRONIC – Quality electronics for service, lab and production User Manual Frequency Inverter ST300...

  • Page 2: Readers

    Preface Overview Thank you for choosing a Sourcetronic ST300 Series variable-frequency drive (VFD). If not otherwise speci- fied, the VFD mentioned in this manual will refer to this device. The product’s flexiblity allows for a wide range of application in various industries such as woodworking, textiles, food, printed bags, plastics, logistics and transportation equipment.

  • Page 3: Table Of Contents

    ST300 Series Frequency Inverter Contents Contents Preface ................................. i Overview ..............................i Readers ..............................i Change History ............................i Contents ..............................ii 1 Safety Precautions ..........................1 1.1 Safety Declaration ..........................1 1.2 Safety Level Definition ........................1 1.3 Personnel Requirements ........................1 1.4 Safety Guidelines ..........................

  • Page 4: Contents

    ST300 Series Frequency Inverter Contents 4 Electrical Installation ..........................19 4.1 Insulation Testing ..........................19 4.2 Checking Compatible Grounding Systems ..................19 4.3 Cable Selection and Routing ......................21 4.3.1 Cable Selection .......................... 21 4.3.2 Cable Arrangement ........................22 4.4 Main Circuit Wiring ..........................23 4.4.1 Main Circuit Wiring ........................
  • Page 5 ST300 Series Frequency Inverter Contents 6.2 Motor Parameter Autotuning ......................37 6.3 Operating Commands ........................39 6.4 Setting the Frequency ........................41 6.4.1 Combination of Frequency Reference Channels ................ 43 6.4.2 Methods to Set the Frequency ....................44 6.4.3 Frequency Fine-Tuning ....................... 55 6.5 Speed Control Mode .........................
  • Page 6 ST300 Series Frequency Inverter Contents 6.13.1 Counting ..........................102 6.13.2 Sleep and Wakeup ......................... 103 6.13.3 Switchover Between FWD Run and REV Run ................ 104 6.13.4 Jump Frequency ........................105 6.13.5 Wobbling Frequency ....................... 106 7 Modbus Communication ........................108 7.1 Standard Communication Interface ....................
  • Page 7 ST300 Series Frequency Inverter Contents 8.4.1 Interference Problems of Meter Switch and Sensors ..............134 8.4.2 Interference on RS485 Communication ..................135 8.4.3 Failure to Stop and Indicator Shimmering Due to Motor Cable Coupling ........136 8.4.4 Leakage Current and Interference on RCD................136 8.4.5 Live Device Housing .........................
  • Page 8 ST300 Series Frequency Inverter Contents D.3.3 Braking Components........................ 151 Appendix E STO Function........................153 E.1 Safety Standards ..........................153 E.2 Safety Function Description ......................154 E.3 Risk Assessment ..........................154 E.4 STO Function Wiring ........................155 E.5 STO Function Terminals ......................... 156 E.6 STO Function Logic Table .......................

  • Page 9: Safety Precautions

    ST300 Series Frequency Inverter Safety Precautions 1 Safety Precautions 1.1 Safety Declaration Please read the user manual and carefully follow all safety precautions before moving, installing, operating and servicing the VFD. Otherwise, equipment damage, physical injury or even death may result.

  • Page 10: Safety Guidelines

    ST300 Series Frequency Inverter Safety Precautions 1.4 Safety Guidelines General Principles • Only trained and qualified professionals are allowed to carry out operations on the device. • Do not perform wiring, inspection or component replacement while the power supply is switched on.

  • Page 11: Operation

    ST300 Series Frequency Inverter Safety Precautions • Connect the optional braking parts (such as braking resistors, braking units or feedback units) according to the wiring diagrams. • As VFD leakage current caused during running may exceed 3.5  m A, ground properly and ensure the grounding resistance is less than 10 ...

  • Page 12: Maintenance

    ST300 Series Frequency Inverter Safety Precautions • After the synchronous motor has stopped, wait for at least the time marked on the VFD (minimum 5 minutes). • During operation, you must ensure that the synchronous motor cannot restart due to the effect of an external load;...

  • Page 13: Product Overview

    ST300 Series Frequency Inverter Product Overview 2 Product Overview 2.1 Product Nameplate and Model Each VFD comes with a nameplate containing the basic product information and relevant certification marks such as, for example, the CE mark. Each VFD also comes with inbuilt STO (see Appendix E STO Function) and an EMC C3 filter.
  • Page 14 ST300 Series Frequency Inverter Product Overview Speed Fluctuation ±  0 .3% (SVC) Torque Response <  1 0  m s (SVC) Torque Control 5% (SVC) Accuracy For AMs: 0.25  H z or 150% (SVC) Starting Torque For SMs: 2.5  H z or 150% (SVC) 150% of the rated current for 60 ...

  • Page 15: Product Ratings

    ST300 Series Frequency Inverter Product Overview 2.3 Product Ratings Apparent Output Input Output Max. Working Rated Power Product Model Power (kVA) Power (kW) Current (A) Current (A) Temperature Frequency AC 1PH 200–240  V ST300-0R4G1 50  H z or 60  H z ST300-0R7G1 0.75...

  • Page 16: Product Dimensions And Weight

    ST300 Series Frequency Inverter Product Overview ST300-2R2G3 ST300-003G3 ST300-004G3 ST300-5R5G3 ST300-7R5G3 2.5 Product Dimensions and Weight Outline Dimensions Package Outline Gross VFD Model Frame WxHxD (mm) Dimensions WxHxD (mm) Weight (kg) Weight (kg) AC 1PH 200–240  V ST300-0R4G1 60x190x155 238x98x205 0.99...
  • Page 17 ST300 Series Frequency Inverter Product Overview Figure 2-2 Product Components (using the VFD model 7R5G3 as an example) Component Component Grounding terminal for safety Input terminal protection at the input EMC screw Potentiometer knob Cover Nameplate Model bar code Control board terminal...

  • Page 18: System Configuration

    ST300 Series Frequency Inverter Product Overview 2.7 System Configuration When using the VFD to drive a motor to form a control system, various electrical devices need to be installed on the input and output sides of the VFD to ensure stable system running.
  • Page 19 • …view oscillographic curves, save and replay waveform data, operate waveforms through cursor, and simulate waveform data. Please visit www.sourcetronic.com to download the soft- ware. For details about option model selection, see Appendix D Peripheral Accessories. v1.0...

  • Page 20: Quick Startup

    ST300 Series Frequency Inverter Product Overview 2.8 Quick Startup Inspect the device upon unpacking. → see 3.1 Unpacking Inspection Ensure that the load connected to the VFD matches the power supply. → see 2.1 Product Nameplate and Model Check the installation environment.

  • Page 21: Mechanical Installation

    POWER indicator is off. • The VFD installation must be designed and done according to applicable local laws and regulations. Sourcetronic does not assume any liability whatsoever for any VFD installation which breaches local laws or regulations. 3.1.3 Installation Environment and Site...

  • Page 22: Location Requirements

    ST300 Series Frequency Inverter Mechanical Installation • The RH cannot exceed 60% in an environment where there are corro- sive gases. • Lower than 1000  m • When the altitude exceeds 1000  m , derate by one percent for every in- Altitude crease of 100 ...

  • Page 23: Installation Space

    ST300 Series Frequency Inverter Mechanical Installation 3.1.6 Installation Space 3.1.6.1 Single VFD Cold Figure 3-2 Installation space diagram of a single VFD Table 3-1 Installation dimensions of a single VFD Dimensions (mm) Frame A, B, C ≥  4 0 ≥  1 00 ≥ ...

  • Page 24: Installation And Uninstallation

    ST300 Series Frequency Inverter Mechanical Installation Table 3-2 Installation dimensions of multiple VFDs Dimensions (mm) Frame A, B, C ≥  4 0 ≥  1 00 ≥  1 00 3.2 Installation and Uninstallation The available installation methods vary with the VFD external structures (frames). Please choose the appro- priate installation method from the following table based on your specific model and the applicable environ- ment.

  • Page 25: Din Rail Mounting

    ST300 Series Frequency Inverter Mechanical Installation Tighten the four preloaded screws. Preload the two screws at the bottom. 3.2.1.2 DIN Rail Mounting The DIN rail mounting procedure is as follows: Insert rail bracket 1 from the VFD top and Insert rail bracket 2 from the VFD bottom and tighten the upper lugs.

  • Page 26: Dismounting

    ST300 Series Frequency Inverter Mechanical Installation 3.2.2 Dismounting 3.2.2.1 DIN Rail Dismounting The DIN rail dismounting procedure is as follows: Use a tool to pull out the sheet metal lock catch Press the buckle in the middle of the DIN rail...

  • Page 27: Electrical Installation

    ST300 Series Frequency Inverter Electrical Installation 4 Electrical Installation 4.1 Insulation Testing Do not perform any voltage endurance or insulation resistance tests—such as high-voltage insulation tests or using a megohmmeter to measure the insulation resistance—on the VFD or its components. Insulation and voltage endurance tests have been performed between the main circuit and housing of each device before shipping.
  • Page 28 ST300 Series Frequency Inverter Electrical Installation Table 4-1 Asymmetric grounding system description System Description Systematic Diagram Notes • The TN system also carries a grounding phase cable, for The power neutral point is example grounding phase grounded. The exposed con- cable R.

  • Page 29: Cable Selection And Routing

    ST300 Series Frequency Inverter Electrical Installation 4.3 Cable Selection and Routing 4.3.1 Cable Selection Power Cable: Power cables include input power cables and motor cables. Comply with local regulations to select cables. To meet the EMC requirements stipulated in the CE standards, it is recommended to use symmetrical shielded cables as input motor cables and power cables, as shown in Figure 4-2.

  • Page 30: Control Cable

    ST300 Series Frequency Inverter Electrical Installation Control Cable: Control cables mainly include analog signal control cables and digital signal control cables. Analog signal control cables use twisted-pair double shielded cables, with a separate shielded twisted pair for each signal and different ground wires for different analog signals. For digital signal control cables, we recommend double-shielded cables, but you can also use single-shielded or unshielded twisted pairs.

  • Page 31: Main Circuit Wiring

    ST300 Series Frequency Inverter Electrical Installation 4.4 Main Circuit Wiring 4.4.1 Main Circuit Wiring Braking resistor power VFD main circuit supply Fuse Figure 4-5 Main circuit wiring diagram Note: The fuse, input reactor, input filter, output reactor, and output filter are optional parts. For details, see Appendix D Peripheral Accessories.

  • Page 32: Wiring Procedure

    ST300 Series Frequency Inverter Electrical Installation Note: We recommend you use a symmetrical motor cable. Please ground the grounding conductor in the motor cable at the frequency converter end and the motor end. 4.4.3 Wiring Procedure Connect the yellow and green grounding line of the input power cable to the VFD grounding terminal , then connect the 3PH input cable to the R, S, and T terminals and tighten up.

  • Page 33: Control Circuit Wiring

    ST300 Series Frequency Inverter Electrical Installation 4.5 Control Circuit Wiring 4.5.1 Control Circuit Wiring + 24 Forward running Forward Analog output jogging 0-10V/0-20mA Fault reset output HDIA 485+ RS485 Power used for communication 485- frequency setting +10V Multifunction analog input...
  • Page 34 ST300 Series Frequency Inverter Electrical Installation Function Terminal +10V Locally provided +10  V power supply Analog input. Range: 0–10  V or 0–20  m A. You can use the DIP switch to select whether voltage or current is used for input.

  • Page 35: Input/Output Signal Wiring

    ST300 Series Frequency Inverter Electrical Installation 4.5.3 Input/Output Signal Wiring 4.5.3.1 Digital Input Signal Wiring The VFD supports only the NPN wiring method. +24V Int ernal power supply Figure 4-11 NPN mode 4.5.3.2 Digital Output Signal Wiring + 24V +24V...

  • Page 36: Power Distribution Protection

    ST300 Series Frequency Inverter Electrical Installation Note: • When selecting the current signal input for AI1, pry the plastic stopper and turn the AI1 switch to “I”. • The method for AO1 current output type and RS485 matching resistor selection is similar.

  • Page 37: Motor Thermal Overload Protection

    ST300 Series Frequency Inverter Electrical Installation Motor and motor cable short-circuit protection: As long as the motor cable is selected based on the VFD’s rated current, the device can protect the motor cable and motor without any other protective devices in case of a short circuit.

  • Page 38: Keypad Operation Guidelines

    ST300 Series Frequency Inverter Keypad Operation Guidelines 5 Keypad Operation Guidelines 5.1 Keypad Panel Display The VFD has been equipped with an LED film keypad as a standard configuration part. You can use the keypad to start and stop the device, read status data, and set various parameters.

  • Page 39: Display Area

    ST300 Series Frequency Inverter Keypad Operation Guidelines The VFD uses the terminals as its command Blinking channel. The VFD uses the keypad as its command channel. RUN/TUNE ON, displaying an error code The VFD is in error state. FWD/REV Blinking at the same time The VFD is in pre-alarm state.

  • Page 40: Key

    ST300 Series Frequency Inverter Keypad Operation Guidelines 5.1.3 Key Function Press this key to enter or exit level-1 menus or to delete a parameter. Programming/ Multifunction Press and hold this key (at least 1  s ) to implement the function defined by shortcut key the ones digit of P07.02, which is jogging by default.

  • Page 41: Displaying Stopped-State Parameters

    ST300 Series Frequency Inverter Keypad Operation Guidelines 5.2.1 Displaying Stopped-State Parameters When the VFD is in stopped state and the keypad is not in the function code viewing or editing state, the keypad displays stopped-state parameters. By setting P07.07, you can select different stopped-state param- eters to display.

  • Page 42: Setting A Password For The Vfd

    ST300 Series Frequency Inverter Keypad Operation Guidelines Stopped-state parameter display Level-1 menu Level-1 menu J OG RUN/TUNE RUN/TUNE RUN/TUNE FWD/REV FWD/REV FWD/REV J OG LOCAL/REMOT LOCAL/REMOT LOCAL/REMOT SHIFT J OG Level-2 menu Level-2 menu Level-2 menu SHIFT RUN/TUNE RUN/TUNE RUN/TUNE...

  • Page 43: Viewing Function Parameters

    ST300 Series Frequency Inverter Keypad Operation Guidelines 5.3.3 Viewing Function Parameters You can view the current status of various function codes. The following describes how to access this in the stopped-state parameter display interface when the password is 10001: Stopped-state parameter display...

  • Page 44: Commissioning

    ST300 Series Frequency Inverter Commissioning 6 Commissioning The simplified VFD commissioning flowchart is as follows: St art Power on aft er t he wiring is connect ed properly Rest ore t o default values Asynchronous Synchronous Mot or mot or (SM)

  • Page 45: Rated Motor Parameters

    ST300 Series Frequency Inverter Commissioning 6.1.2 Rated Motor Parameters Set the rated parameters of three-phase AC asynchronous motors according to the motor nameplate: Parameters P02.01–P02.05 are the parameters corresponding to an asynchronous motor 1. Function Name Default Setting Range Description...
  • Page 46 ST300 Series Frequency Inverter Commissioning Set P00.01 to 0 to select the keypad. Set P00.15 to select one of three autotuning modes. Press RUN to give the start command. The motor now enters autotuning. Function Name Default Setting Range Description...

  • Page 47: Operating Commands

    ST300 Series Frequency Inverter Commissioning 6.3 Operating Commands Operating commands are used to control the device start and stop, the running direction (forward or reverse), and the jogging function. The available channels to issue operating commands include the keypad, terminals, and modbus communication.
  • Page 48 ST300 Series Frequency Inverter Commissioning Running command Stop Forward running Reverse running Hold Two-wire control mode 2: P05.13= 1 Function enabling is separated from the direction. In this mode, FWD is the enabling terminal. The direction depends on the defined REV state.

  • Page 49: Setting The Frequency

    ST300 Series Frequency Inverter Commissioning The direction control functions as follows: Running Direction Forward running OFF→ON Forward running Reverse running OFF→ON Reverse running ON→OFF Decelerate to stop Note: When the FWD/REV terminal is active in two-wire control mode, if the VFD stops due to a stop com- mand given by another source, it will not run again after the stop command disappears even if the control terminal FWD/REV is still active.
  • Page 50 ST300 Series Frequency Inverter Commissioning See the following schematic diagram: P00.06 (Setting channel of A frequency command) Keypad P00.10 Frequency set through P17.02 keypad P17.00 (Ramp P00.09 reference (Set frequency) Combination mode of setting sources frequency) HDIA Simple PLC P00.04 (Upper limit of...

  • Page 51: Combination Of Frequency Reference Channels

    ST300 Series Frequency Inverter Commissioning 6.4.1 Combination of Frequency Reference Channels 6.4.1.1 Combination Mode of Reference Values Set P00.09 to select how you wish to combine the different frequency setting sources. Function Name Default Setting Range Description Code 0: A...

  • Page 52: Methods To Set The Frequency

    ST300 Series Frequency Inverter Commissioning 6.4.2 Methods to Set the Frequency The VFD provides multiple frequency setting methods, including setting P00.06 (channel for frequency refer- ence A) and setting P00.07 (channel for frequency reference B). Function Name Default Setting Range...
  • Page 53 ST300 Series Frequency Inverter Commissioning See the following figure: P10.01 (simple PLC memory selection) P10.00（simple PLC mode） No memory after power off Set frequency Stop after running Power cut during once running Memory after Restart running power off after the first...
  • Page 54 ST300 Series Frequency Inverter Commissioning Model- The factory default ACC/DEC time P08.00 ACC Time 2 dependent used is the first group. Model- P08.01 DEC Time 2 dependent Model- P08.02 ACC Time 3 dependent Model- P08.03 DEC Time 3 dependent Model- P08.04...
  • Page 55 ST300 Series Frequency Inverter Commissioning 6.4.2.5 Setting the Frequency Through Multi-Step Speed Commands You can set P00.06 or P00.07 to 6 (setting frequency through multi-step speed commands), which works well in scenarios where the operating frequency does not need to be adjusted continuously and only a set number of frequency values are needed.
  • Page 56 ST300 Series Frequency Inverter Commissioning Function Name Default Setting Range Description Code P05.01: 1 Function 16: Multi-step speed terminal 1 P05.02: 4 Selection of Multi- 17: Multi-step speed terminal 2 P05.01– function Digital 0–95 18: Multi-step speed terminal 3 P05.03: 7 P05.09...
  • Page 57 ST300 Series Frequency Inverter Commissioning Function Name Default Setting Range Description Code So long as P00.06 or P00.07 (channel of frequency reference A) is 7 or P04.27 (voltage setting channel) is 6, the VFD is PID-controlled. This function code specifies the channel through which the device will receive its reference values during the PID process.
  • Page 58 ST300 Series Frequency Inverter Commissioning 1: PID output is negative. When the feedback signal is higher than the PID reference value, the output frequency of the VFD will in- crease to balance the PID. Specifies the feedback sampling cycle. Sampling The regulator calculates in each sampling P09.07...
  • Page 59 ST300 Series Frequency Inverter Commissioning Ones digit: 0: Continue integral control after the fre- quency reaches upper/lower limit 1: Stop integral control after the frequency reaches upper/lower limit Tens digit: 0: Same as the main reference direction 1: Contrary to the main reference direction...
  • Page 60 ST300 Series Frequency Inverter Commissioning P17.00 Set frequency 0.00Hz 0.00Hz–P00.03 – P17.23 PID Reference Value 0.0% -100.0%–100.0% – P17.24 PID Feedback Value 0.0% -100.0%–100.0% – Introduction to the Working Principles and Control Methods for PID Control Mode Proportional Regulation (Kp): Proportional control can respond to feedback changes rapidly, however, it cannot eliminate the static difference by itself.
  • Page 61 ST300 Series Frequency Inverter Commissioning Function Name Default Setting Range Description Code Specifies the speed of integral adjust- ment on the deviation of PID feedback and reference from the PID regulator. When the deviation is 100%, the inte- Integral gral regulator works continuously the P09.05...
  • Page 62 ST300 Series Frequency Inverter Commissioning Response Before adjustment After adjustment Time t To Stabilize the Feedback Value as Fast as Possible: If overshoot occurred, decrease the integral time (Ti) and increase the differential time (Td) to stabilize control as quickly as possible.

  • Page 63: Frequency Fine-Tuning

    ST300 Series Frequency Inverter Commissioning 6.4.2.7 Setting the Frequency Through Modbus Communication Set P00.06 or P00.07 to 8 to select modbus communication as the VFD’s frequency reference channel. For details, see 7 Modbus Communication. 6.4.3 Frequency Fine-Tuning The VFD supports further frequency fine-tuning based on the set frequency. In some specific scenarios, the set frequency parameter can be left at 0, and the frequency fine-tuning function can be used by itself to set the frequency during the whole process.

  • Page 64: Speed Control Mode

    ST300 Series Frequency Inverter Commissioning 6.5 Speed Control Mode The VFD supports three speed control modes. You can set P00.00 to select a speed control mode based on the conditions and requirements of your specific use case. Before using a vector control mode (0 or 1), first set the motor nameplate parameters and perform motor parameter autotuning.
  • Page 65 ST300 Series Frequency Inverter Commissioning P03—Vector Control of Motor 1. Note: An SM in this mode is more suitable for operation at high power and low frequency than for extremely high speeds. SVC mode 1: P00.00  =   1 This mode is most applicable to scenarios where mediocre control accuracy and response speed are sufficient.
  • Page 66 ST300 Series Frequency Inverter Commissioning P03—Vector Control of Motor 1. Space voltage vector control mode: P00.00  =   2 This mode is most applicable to scenarios where mediocre control accuracy is sufficient, and one VFD needs to drive multiple motors. For details, see...

  • Page 67: Torque Settings

    ST300 Series Frequency Inverter Commissioning P04—V/F Control. 6.6 Torque Settings The VFD offers both torque control and speed control. Speed control aims to stabilize the speed so that the set speed matches the actual operating speed, while the maximum load capacity is limited by the torque limit.

  • Page 68: Switching Between Speed Control And Torque Control

    ST300 Series Frequency Inverter Commissioning Function Name Default Setting Range Description Code 0–1: Keypad (P03.12) 2: AI1 3: AI2 4: AI3 5: HDIA 6: Multi-step torque 7: Modbus communication Note: • For AMs, 100% corresponds Torque Setting to the motor rated torque cur- P03.11...

  • Page 69: Start/Stop Settings

    ST300 Series Frequency Inverter Commissioning Select any of multifunction digital input terminals S1–S8 and HDIA as an external input terminal. Set P05.01–P05.09 to 29. When function 29 is selected, the settings of the torque control function are essentially inverted, mean- ing you must set P03.32 to 0 for torque control or 1 for speed control, instead of vice versa.
  • Page 70 ST300 Series Frequency Inverter Commissioning St art aft er DC brake Frequency(f) P01.03 P01.04 Time(t ) Function Name Default Setting Range Description Code Specifies the initial frequency to be Starting Frequency used upon VFD direct start. P01.01 0.50  H z 0.00–50.00 ...

  • Page 71: Stop Settings

    ST300 Series Frequency Inverter Commissioning A higher braking current means a higher braking power. The DC braking current before starting is a percentage of the rated output current. Upon receiving a start command, the VFD remains in standby mode and re- P01.23...
  • Page 72 ST300 Series Frequency Inverter Commissioning Note: If the set frequency is changed from one above the frequency lower limit to one below it, the VFD will react as you specify via P01.19. Function Name Default Setting Range Description Code Specifies the status of the VFD when...
  • Page 73 ST300 Series Frequency Inverter Commissioning If P01.16  =   1 , the VFD must first check whether the output frequency of the motor is below P01.15. If yes, the VFD will coast to a stop without delay. If not, it will only do so once the delay time specified by P01.17 has passed.

  • Page 74: Power-Off Restart

    ST300 Series Frequency Inverter Commissioning Stop Speed P01.17 0.50  s 0.00–100.00  s – Detection Time P01.24 Stop Speed Delay 0.0  s 0.0–600.0  s – Short-Circuit 100% corresponds to the VFD’s rated P01.29 0.0% 0.0%–150.0% Braking Current current. Hold Time of Short- P01.31...

  • Page 75: Control Performance Regulation

    ST300 Series Frequency Inverter Commissioning Upon receiving a start command, the VFD remains in standby mode and re- P01.23 Start Delay 0.0  s 0.0–600.0  s starts with a delay to allow the brake to be released. Specifies whether terminal-based op- erating commands will be registered at power-on.
  • Page 76 ST300 Series Frequency Inverter Commissioning Function Name Default Setting Range Description Code 0: Straight-line V/F curve, applicable to consistent torque loads 1: Multi-point V/F curve 2: Torque-down V/F curve (power of 1.3) 3: Torque-down V/F curve (power of 1.7) 4: Torque-down V/F curve (power of 2.0) Curves 2–4 are applicable to torque...
  • Page 77 ST300 Series Frequency Inverter Commissioning Function Name Default Setting Range Description Code V/F Frequency P04.03 0.00  H z 0.00  H z–P04.05 – Point 1 of Motor 1 V/F Voltage 100% corresponds to the P04.04 0.0% 0.0%–110.0% Point 1 of motor 1 rated voltage of motor 1.
  • Page 78 ST300 Series Frequency Inverter Commissioning Function Name Default Setting Range Description Code 0.0% (automatic torque boost); 0.1%– Torque Boost of 10.0% (manual torque boost) P04.01 0.0% 0.0%–10.0% Motor 1 Note: V indicates the max. output volt- age. The cut-off frequency of manual torque...
  • Page 79 ST300 Series Frequency Inverter Commissioning High-Frequency too large, the VFD output current may P04.11 Oscillation Control 0–100 also become too high. Factor of Motor 1 Oscillation Control P04.12 30.00  H z 0.00  H z–P00.03 Threshold of Motor 1 6.8.1.5 Reactive Current Regulation in SM V/F Control When SM V/f control mode is enabled, you can configure P04.36 to set the frequency threshold for switching...

  • Page 80: Vector Control Performance Optimization

    ST300 Series Frequency Inverter Commissioning 6.8.2 Vector Control Performance Optimization 6.8.2.1 Torque Upper Limit Speed control and torque control in vector control mode are restricted by the torque upper limits. If you set P03.18 (channel for electromotive torque upper limit) to 0 (keypad), the upper limit of the torque is determined by P03.20.
  • Page 81 ST300 Series Frequency Inverter Commissioning when a value from 1 to 5 is se- lected. • For SMs, 100% corresponds to the motor rated current when the value 0 or 1 is selected, and corresponds to triple the motor rated current when a value from 2 to 5 is selected.
  • Page 82 ST300 Series Frequency Inverter Commissioning 5: Multi-step setting 6: Modbus communication Note: 100% corresponds to the max. frequency. Setting Forward Rotation Frequency P03.16 Upper Limit Through the Keypad in These function codes specify the fre- Torque Control 50.00  H z 0.00 ...
  • Page 83 ST300 Series Frequency Inverter Commissioning Function Name Default Setting Range Description Code The PI parameters of the speed regu- Speed-Loop P03.00 20.0 0.0–200.0 lator are divided into a group for low Proportional Gain 1 speeds and a group for high speeds.
  • Page 84 ST300 Series Frequency Inverter Commissioning Mot or flux weakening coefficient Mot or min. flux weakening limit Function Name Default Setting Range Description Code Used when the AM is in flux weakening Lowest Weakening control; the lowest weakening point in P03.23 Point in Constant 10%–100%...

  • Page 85: Input And Output

    ST300 Series Frequency Inverter Commissioning Pulse superimposition: P13.01  =   2 This method is similar to P13.01  =   1 , the difference is that the auto-tuning method for the initial pole angle is different. This method has a higher identification accuracy with shorter time but sharper noise, but you can adjust the pulse current value by setting P13.06.
  • Page 86 ST300 Series Frequency Inverter Commissioning P05.10 P05.11 Digital function (Input terminal polarity selection) (Digital filter time) selection P05.15 P05.14 P05.01 Swicth-off delay Switch-on delay 1 -1 (Default value: 1) P05.17 P05.16 P05.02 Switch-on delay Swicth-off delay 1 -1 (Default value: 4) P05.19...
  • Page 87 ST300 Series Frequency Inverter Commissioning Used to change the frequency increase/decrease command when the Increase Frequency frequency is set to be given via external terminals. Setting (UP) UP t erm inal DOWN t erm inal UP/ DOWN Decrease Frequency zeroing t erm inal...
  • Page 88 ST300 Series Frequency Inverter Commissioning PID is temporarily inactive, and the VFD maintains its current frequency Pause PID Control output. Pause Wobbling The VFD pauses at its current output. When this signal is cleared, wob- Frequency (Stop at bling-frequency operation continues at the current frequency.
  • Page 89 ST300 Series Frequency Inverter Commissioning Related parameters are listed in the following table: Function Setting Name Default Description Code Range 0: Defines HDIA as a high-speed pulse input P05.00 HDI Input Type 0–1 1: Defines HDIA as a digital input P05.01...
  • Page 90 ST300 Series Frequency Inverter Commissioning Running command Stop Forward running Reverse running Hold 1: Two-wire control 2 The enabling is separated from the di- rection. In this mode, FWD is the ena- bling terminal. The direction depends on the defined REV status.
  • Page 91 ST300 Series Frequency Inverter Commissioning Sin: Three-wire control; FWD: Forward running; REV: Reverse running 3: Three-wire control 2 In this mode, Sin is defined as an ena- bling terminal, and the operation com- mand is generated by FWD or REV, but the direction is controlled by both FWD and REV.

  • Page 92: Digital Output

    ST300 Series Frequency Inverter Commissioning P05.14 S1 Switch-On Delay P05.15 S1 Switch-Off Delay P05.16 S2 Switch-On Delay P05.17 S2 Switch-Off Delay P05.18 S3 Switch-On Delay P05.19 S3 Switch-Off Delay These function codes specify the delay time corresponding to the electrical level changes P05.20...
  • Page 93 ST300 Series Frequency Inverter Commissioning The following table lists the options of function parameters P06.01–P06.04. A same output terminal function can be repeatedly selected. Setting Function Description No Function The output terminal does not have any function. Running The ON signal is output when there is frequency output during running.
  • Page 94 ST300 Series Frequency Inverter Commissioning Designated Counting The ON signal is output when the counting value reaches the value Value Reached specified by P08.26 (providing the counting function is enabled). External Error The ON signal is output when the error is an external error (E17).

  • Page 95: Analog Input And Output Terminal Functions

    ST300 Series Frequency Inverter Commissioning The "Any frequency reached" signal is out- Detection Value for put when the ramp reference frequency is P06.33 Frequency Being 1.00  H z 0  H z–P00.03 greater than the value specified by P06.33 Reached and this situation lasts the time specified by P06.34.
  • Page 96 ST300 Series Frequency Inverter Commissioning Channel for Forward 1: AI1 Rotation Frequency P03.14 0–6 2: AI2 Upper Limit 3: AI3 in Torque Control Channel for Reverse 1: AI1 Rotation Frequency P03.15 0–6 2: AI2 Upper Limit 3: AI3 in Torque Control...
  • Page 97 ST300 Series Frequency Inverter Commissioning AI3 Input Input filter time: For setting the sensi- P05.42 0.00  V 0.00  V –P05.44 Lower Limit tivity of the analog input. Increasing the value can improve the interference Corresponding immunity of the analog input, but can P05.43...
  • Page 98 ST300 Series Frequency Inverter Commissioning Output functions are as follows. Setting Function Description Operating Frequency 0  H z–P00.03 Set Frequency 0  H z–P00.03 Ramp Reference Frequency 0  H z–P00.03 Rotational Speed 0–Synchronous speed corresponding to P00.03 Output Current 0–Twice the VFD rated current...

  • Page 99: Rs485 Communication

    ST300 Series Frequency Inverter Commissioning Related parameters are listed in the following table. Function Name Default Setting Range Description Code 0–31. For details, see the preceding P06.14 AO1 Output 0–63 table. 32–63: Reserved AO1 Output Used to define the relationship be- P06.17...
  • Page 100 ST300 Series Frequency Inverter Commissioning 2: 4800  b ps 3: 9600  b ps 4: 19  2 00  b ps 5: 38  4 00  b ps 6: 57  6 00  b ps 7: 11  5 200  b ps Note: The baud rate set on the VFD must match that of the host controller.
  • Page 101 ST300 Series Frequency Inverter Commissioning If continuous communication is required, you can configure the function code to monitor the communication status. 0: Report an alarm and coast to stop 1: Keep running without reporting an alarm Transmission Error 2: Stop in enabled stop mode without re- P14.05...

  • Page 102: Monitoring Parameters

    ST300 Series Frequency Inverter Commissioning 6.11 Monitoring Parameters Monitoring parameters mainly fall in groups P07 and P17, which are used to view and analyze the VFD control and use status. The monitored content is listed in the following table. Group...
  • Page 103 ST300 Series Frequency Inverter Commissioning Model- P07.20 VFD Rated Current 0.01–600.00  A – Dependent 0: No error 1–3: Reserved P07.27 Present Error Type 4: Overcurrent during ACC (E4) 5: Overcurrent during DEC (E5) 6: Overcurrent during constant speed running (E6) P07.28...
  • Page 104 ST300 Series Frequency Inverter Commissioning Output Terminal P07.40 Status at 0x0000 0x0000–0xFFFF – Present Error Operating Frequency P07.41 0.00  H z 0.00  H z–P00.03 – at Last Error Ramp Reference P07.42 Frequency at 0.00  H z 0.00  H z–P00.03 –...

  • Page 105: Group P17-Status Viewing

    ST300 Series Frequency Inverter Commissioning 6.11.2 Group P17—Status Viewing 6.11.2.1 Basic Status Viewing Function Name Default Setting Range Description Code Ones digit: Control mode 0: Open-loop vector control 1: Reserved 2: VF control Tens digit: Open-loop vector control mode P17.40...
  • Page 106 ST300 Series Frequency Inverter Commissioning Digital Displays the adjustment on the VFD P17.14 0.00  H z 0.00  H z–P00.03 Adjustment Value through the UP/DOWN terminal. P17.16 Linear Speed 0–65  5 35 – HDIA Input 0.000– P17.22 0.000  k Hz Displays HDIA input frequency.
  • Page 107 ST300 Series Frequency Inverter Commissioning Excitation Current Displays the excitation current reference P17.33 0.00  A -300.00–300.00  A Reference value in vector control mode. Torque Current Displays the torque current reference P17.34 0.00  A -300.00–300.00  A Reference value in vector control mode.

  • Page 108: Protection Parameter Setting

    ST300 Series Frequency Inverter Commissioning Braking Torque P17.42 Upper Limit Inertia Compensation -100.0%– P17.45 0.0% – Torque 100.0% Friction Compensation -100.0%– P17.46 0.0% – Torque 100.0% 6.11.2.6 PID Regulator Information Function Name Default Setting Range Description Code P17.23 PID Reference Value 0.0%...
  • Page 109 ST300 Series Frequency Inverter Commissioning ACC overvoltage Constant-speed overvoltage DEC overvoltage stalling control stalling control stalling control Overvoltage stalling Overvoltage stalling Overvoltage stalling protection voltage protection voltage protection voltage Under overvoltage Under overvoltage Under overvoltage stalling protection stalling protection stalling protection...

  • Page 110: Current-Limit Protection

    ST300 Series Frequency Inverter Commissioning 6.12.2 Current-Limit Protection During accelerated operation, the actual acceleration rate of the motor is lower than the output frequency due to the excessive load; if no action is taken, the VFD may shut down due to overcurrent during acceleration.

  • Page 111: Cooling Fan Control

    ST300 Series Frequency Inverter Commissioning If this function does not meet actual requirements, you can set parameters P11.17–P11.20. The speed loop dynamic response characteristics of vector control can be adjusted by setting the proportional coefficient and integral coefficient of speed regulator. Increasing proportional gain or reducing integral time can accelerate dynamic response of speed loop;...

  • Page 112: Dynamic Braking

    ST300 Series Frequency Inverter Commissioning Function Name Default Setting Range Description Code 0: Normal mode Cooling Fan P08.39 0–2 1: Permanent operation after power-on Operation Mode 2: Operation mode 2 Note: The fan will automatically run (in any mode) if the VFD detects that the rectifier bridge or inverter module temperature reaches or exceeds 50°C.

  • Page 113: Safe Torque Off

    ST300 Series Frequency Inverter Commissioning 6.12.6 Safe Torque Off You can activate the Safe Torque Off (STO) function to prevent the motor from starting unexpectedly if the VFD main power supply is not switched off. The STO function cuts off the VFD output by switching off the drive signals.

  • Page 114: Sleep And Wakeup

    ST300 Series Frequency Inverter Commissioning 0: Disable P06.01 Y1 Output 0–63 18: Set counting value reached P06.03 RO1 Output 19: Designated counting value reached P08.25 Set Counting Value P08.26–65  5 35 Designated P08.26 0–P08.25 Counting Value Accumulative P17.18 0–65  5 35 Counting Value 6.13.2 Sleep and Wakeup...

  • Page 115: Switchover Between Fwd Run And Rev Run

    ST300 Series Frequency Inverter Commissioning 0: Coast to stop 1: Decelerate to stop Wake-Up-From- P01.20 0.0  s 0.0–3600.0  s Valid when P01.19  =   2 . Sleep Delay P01.34 Sleep Delay 0.0  s 0.0–3600.0  s – 6.13.3 Switchover Between FWD Run and REV Run In scenarios where frequent switching between forward and reverse running is required, you can set P01.14...

  • Page 116: Jump Frequency

    ST300 Series Frequency Inverter Commissioning Function Name Default Setting Range Description Code Specifies the initial frequency to be Starting Frequency P01.01 0.50  H z 0.00–50.00  H z used upon VFD direct start. For details, at Direct Start see the description for P01.02.

  • Page 117: Wobbling Frequency

    ST300 Series Frequency Inverter Commissioning Set frequency(f) 1/ 2* jump amplitude 3 Jump frequency 3 1/ 2* jump amplitude 3 1/ 2* jump amplitude 2 Jump frequency 2 1/ 2* jump amplitude 2 1/ 2* jump amplitude 1 Jump frequency 1...
  • Page 118 ST300 Series Frequency Inverter Commissioning Function Name Default Setting Range Description Code 0.0%–100.0% Amplitude of P08.15 0.0% (of the set – Wobbling Frequency frequency) 0.0%–50.0% Amplitude of Sudden P08.16 0.0% (of the wobbling – Jump Frequency frequency) Time required to run from the lowest Rise Time of P08.17...

  • Page 119: Modbus Communication

    ST300 Series Frequency Inverter Modbus Communication 7 Modbus Communication 7.1 Standard Communication Interface The VFD provides RS485 communication as a standard configuration. The following table defines the com- munication terminal function. Table 7-1 Standard communication terminal Network Signal Signal Description...

  • Page 120: Status Parameter

    ST300 Series Frequency Inverter Modbus Communication Status parameter Note: Status parameters are read only. Parameter Address Description 0001H: Forward running 0002H: Reverse running 0003H: Stopped VFD Status Word 1 2100H 0004H: Error 0005H: In POFF state 0006H: In pre-excitation state...

  • Page 121: Control Parameter

    ST300 Series Frequency Inverter Modbus Communication Closed-Loop Setting 3008H -100.0%–100.0% (Unit: 0.1%) Closed-Loop Feedback 3009H -100.0%–100.0% (Unit: 0.1%) 000–1FF Input IO Status 300AH (corresponding to HDIA, S8, S7, S6, S5, S4, S3, S2, and S1, respectively.) 000–0F Output IO Status 300BH (corresponding to local Reserved, RO1, Reserved, and Y1, respectively.)
  • Page 122 ST300 Series Frequency Inverter Modbus Communication Torque setting 2004H (-3000–3000, in which 1000 corresponds to 100.0% of the motor rated current) 2005H Upper limit setting of forward operating frequency (0–Fmax; unit: 0.01 Hz) 2006H Upper limit setting of reverse operating frequency (0–Fmax; unit: 0.01 Hz)

  • Page 123: Modbus Networking

    ST300 Series Frequency Inverter Modbus Communication 7.3 Modbus Networking A Modbus network is a control network with one master and several slaves, i.e. in a Modbus network there is only one device that serves as the master; all other devices are defined as slaves. The master can communi- cate with each individual slave or with all slaves.

  • Page 124: Rtu Mode

    ST300 Series Frequency Inverter Modbus Communication 7.3.2 RTU Mode 7.3.2.1 RTU Communication Frame Structure When a controller is set to RTU communication mode on a Modbus network, each byte (including eight bits) in the message contains two hexadecimal characters (each of which comprises four bits). Compared to ASCII mode, RTU mode allows more data to be transmitted at the same baud rate.
  • Page 125 ST300 Series Frequency Inverter Modbus Communication The following table describes the standard structure of an RTU frame: START (frame header) –T –T –T (transmission time of 3.5 bytes) ADDR (slave address domain) Communication address: 0–247 (decimal system; 0 is the broadcast address) CMD (function domain) 03H: Read slave parameter;...
  • Page 126 ST300 Series Frequency Inverter Modbus Communication the received frame and compares the result with the value in the received CRC area. If the two CRC values are not the same, errors will occur during transmission. During CRC, 0xFFFF is stored first, and then a process is launched to process at least 6 contiguous bytes in the frame based on the contents of the current register.

  • Page 127: Rtu Command Code

    ST300 Series Frequency Inverter Modbus Communication In ladder logic, CKSM uses the table look-up method to calculate the CRC value according to the contents of the frame. The program for this method is simple and the calculation is fast, but the ROM space occupied is large, so use this program with caution if you have high memory requirements.
  • Page 128 ST300 Series Frequency Inverter Modbus Communication RTU slave response (from the VFD to the master) is as follows: START –T –T –T (transmission time of 3.5 bytes) ADDR Number of bytes Address 0004H data MSB Address 0004H data LSB Address 0005H data MSB...
  • Page 129 ST300 Series Frequency Inverter Modbus Communication For example, if the master writes 5000 (1388H) to 0004H of the VFD whose address is 02H, the RTU master command (from the master to the VFD) is as follows: START –T –T –T (transmission time of 3.5 bytes)
  • Page 130 ST300 Series Frequency Inverter Modbus Communication RTU master command: START –T –T –T (transmission time of 3.5 bytes) ADDR Sub-function code MSB Sub-function code LSB MSB of data content LSB of data content CRC CHK LSB CRC CHK MSB –T –T...

  • Page 131: Fieldbus Scale

    ST300 Series Frequency Inverter Modbus Communication RTU master command (from the master to the VFD) is as follows: START –T –T –T (transmission time of 3.5 bytes) ADDR MSB of data writing address LSB of data writing address Data count MSB...

  • Page 132: Error Message Response

    ST300 Series Frequency Inverter Modbus Communication Function Name Default Setting Range Description Code Wake-Up-From- Usable only when the ones digit of P01.20 0.0  s 0.00–3600.0  s Sleep Delay P01.19 is set to 2. The value specified in “Setting Range” or “Default” contains one decimal place, so the fieldbus scale is 10. If the value received from the master is 50, the VFD's wake-up-from-sleep delay is 5.0 ...

  • Page 133: Communication Commissioning

    ST300 Series Frequency Inverter Modbus Communication The parameter setting is invalid during the write process. For example, a Operation Failure function input terminal cannot be set repeatedly. The value entered in the address for checking the password is different from Incorrect Password the password defined in P07.00.
  • Page 134 ST300 Series Frequency Inverter Modbus Communication If the RTU mode is selected, choose Input HEX and Show HEX. To implement automatic CRC, you need to choose ModbusRTU, and set Start Byte to 1 and CRC Type to CRC16 (MODBU SRTU) in the CRC Settings window.

  • Page 135: Error Handling

    When an error occurred, handle the error as follows: Check whether the keypad display is functional. If it is not, contact the local Sourcetronic office. If it is, check the function codes in group P07 to determine the circumstances when the fault occurred.
  • Page 136 ST300 Series Frequency Inverter Error Handling • • Load transient or exception oc- Check whether the motor is curred. blocked, whether there is a short-circuit and whether there • Imbalance of the output current at are exceptions on the load de- 3PH.
  • Page 137 ST300 Series Frequency Inverter Error Handling • • The load is too high. Choose a VFD with more power. • The power of the VFD is too low. • Check that the input power is • Phase loss or strong fluctuations normal and that the input cables occur at the RST inputs.
  • Page 138 ST300 Series Frequency Inverter Error Handling • This error can occur if the differ- Check the motor wiring, the mo- ence in performance difference tor type and the parameter set- is more than five power classes. tings. • • The motor parameters are not Relieve the motor and repeat set correctly.
  • Page 139 ST300 Series Frequency Inverter Error Handling • Check external sources of inter- ference and remove them. • The keypad cable is not con- • Replace the hardware and seek nected or not connected cor- maintenance services. rectly. Parameter • Check whether the version of •...
  • Page 140 ST300 Series Frequency Inverter Error Handling • Set the flux weakening coeffi- cient and the current loop pa- rameters again. • The VFD signals an underload Electronic • Check the pre-alarm points for pre-alarm according to the set- Underload Error load and underload.

  • Page 141: Other Status

    ST300 Series Frequency Inverter Error Handling 8.2.2 Other Status Displayed Status Type Possible Cause Solution Code The system is powered off or PoFF System Power Failure Check the grid conditions. the bus voltage is too low. 8.3 Analysis on Common errors 8.3.1 Motor Fails to Work...

  • Page 142: Motor Vibrates

    ST300 Series Frequency Inverter Error Handling 8.3.2 Motor Vibrates Mot or vibrat es or emit s an unusual sound Set t he mot or t ype Are t he mot or paramet ers and paramet ers and mot or t ype set...

  • Page 143: Undervoltage

    ST300 Series Frequency Inverter Error Handling 8.3.4 Undervoltage Undervoltage fault Ensure the power supply Is the voltage of the power supply meet the requirement within the standard range? Close the air switch and Are the air switch and contactor contactor; and rectify the...

  • Page 144: Motor Overheating

    ST300 Series Frequency Inverter Error Handling 8.3.6 Motor Overheating Unusual heating of the motor Set the motor Are the motor parameters parameters are set properly? properly Perform parameter Is parameter autotuning autotuning performed? Does the VFD run at a low...

  • Page 145: Motor Stalls During Acc

    ST300 Series Frequency Inverter Error Handling 8.3.8 Motor Stalls During ACC Mot or st alls during Is t he ACC t ime is t oo short ? Increase t he ACC t ime Use larger cables, Check t he volt age of t he...

  • Page 146: Interference On Rs485 Communication

    ST300 Series Frequency Inverter Error Handling to  1 0  V voltage signal, install a 0.1  μ F capacitor between The system uses proximity switches. After pow- the AO1 and GND terminals. ering on the VFD, the display of a proximity •...

  • Page 147: Failure To Stop And Indicator Shimmering Due To Motor Cable Coupling

    ST300 Series Frequency Inverter Error Handling • Try to install a safety capacitor of 0.1  μ F on the power supply side of the host controller (PLC, HMI or touchscreen). Alternatively, you can also use a magnetic ring (Fe-based nanocrystalline magnetic rings are recom- mended).

  • Page 148: Live Device Housing

    ST300 Series Frequency Inverter Error Handling Electronic RCD Electromagnetic RCD Requires a highly sensitive, accurate and stable zero- Low cost, high sensitivity, small volume, susceptible to phase current transformer using high-permeability voltage fluctuations in the grid and ambient tempera- permalloy materials. A complex process, high cost, in- ture, weak anti-interference effect.

  • Page 149: Inspection And Maintenance

    ST300 Series Frequency Inverter Inspection and Maintenance 9 Inspection and Maintenance 9.1 Daily Inspection and Regular Maintenance Over time, the internal components of the VFD will deteriorate due to the influence of ambient temperature, humidity, dust, vibration and other factors, leading to possible failure or shortening of its service life. Daily inspection and regular maintenance are therefore required to extend the device’s life and avoid safety risks.

  • Page 150: Cooling Fan Replacement

    Ventilation Duct Visual inspection fan, air inlets, or air outlets. For more details about maintenance, visit our website http://www.sourcetronic.com/shop/en, and choose FAQ > ST300, or contact us via the website’s contact form or by calling customer support. 9.2 Cooling Fan Replacement The VFD’s primary wearing part is the cooling fan, whose service life is closely related to the operating envi-...

  • Page 151: Recommissioning

    ST300 Series Frequency Inverter Inspection and Maintenance How to replace the cooling fan: Disassembly Press the buckles on both sides of the fan with Pull out the fan outward at the same time. your hands. Reassembly Align the two fixing holes on the fan with the Push in the fan until you hear a clicking positioning column.
  • Page 152 ST300 Series Frequency Inverter Inspection and Maintenance Use a voltage-controlled power supply to charge the VFD as follows: Charge the VFD for 30 minutes at 25% of the rated voltage, 2–3 years Charge the VFD for 30 minutes at 50% of the rated voltage, Charge the VFD for 30 minutes at 75% of the rated voltage, Finally, charge the VFD for 30 minutes at 100% of the rated voltage.

  • Page 153: Appendix A Technical Data

    ST300 Series Frequency Inverter Technical Data Appendix A Technical Data If the ambient temperature at the installation site of the VFD exceeds 50°C, the altitude of the installation site of the VFD exceeds 1000  m , you are using a cover with ventilation openings for heat dissipation or the carrier frequency is higher than the recommended frequency (see P00.14), the VFD must be derated.

  • Page 154: Derating Due To Carrier Frequency

    ST300 Series Frequency Inverter Technical Data A.3 Derating Due to Carrier Frequency The carrier frequency of the VFD varies depending on the power class. The VFD rated power is defined based on the factory setting of the carrier frequency. Derating Due to Carrier Frequency...

  • Page 155: Motor Cable Length For Normal Operation

    A.5.2 Motor Cable Length for EMC The ST300 series frequency inverters meet the EMC requirements of IEC/EN61800-3:2018. The maximum lengths of the shielded motor cables at a switching carrier frequency of 4  k Hz are as follows: Max.

  • Page 156: Appendix B Application Standards

    ST300 Series Frequency Inverter Application Standards Appendix B Application Standards B.1 List of Application Standards The following table describes the application standards that VFDs comply with. Safety of machinery—Safety related parts of control systems EN/ISO 13849-1 Part 1: General principles for design Safety of machinery—Safety related parts of control systems...

  • Page 157: Emc Product Standard

    ST300 Series Frequency Inverter Application Standards B.4 EMC Product Standard The EMC product standard (EN 61800-3:2018) describes the EMC requirements for VFDs. Application environment categories: Civilian environment, including application scenarios in which the VFD is connected directly to a low- voltage network that also supplies residential buildings without an intermediate transformer.

  • Page 158: Appendix C Dimension Drawings

    ST300 Series Frequency Inverter Dimension Drawings Appendix C Dimension Drawings C.1 VFD Overall Dimensions Figure C-1 Dimensions and hole positions for VFDs in frames A and B Table C-1 Dimensions and hole positions for VFDs in frames A and B...
  • Page 159 ST300 Series Frequency Inverter Dimension Drawings Figure C-2 Dimensions and hole positions for VFDs in frame C Table C-2 Dimensions and hole positions for VFDs in frame C Mounting Dole Outline Dimensions (mm) Mounting Hole Distance (mm) Frame VFD Model...

  • Page 160: Appendix D Peripheral Accessories

    ST300 Series Frequency Inverter Peripheral Accessories Appendix D Peripheral Accessories D.1 Cable Relevant cables mainly include power cables and control cables. The selection of cable types can be found in the following table: Symmetrical Four-Core Double-Shielded Single-Shielded Cable Type Shielded cable...

  • Page 161: Breaker And Electromagnetic Contactor

    ST300 Series Frequency Inverter Peripheral Accessories Crimp terminal selection: Due to, for example, cable length or routing, it may be necessary to increase the cross-section of the cable and replace the appropriate connection terminals (cable lugs). D.1.2 Control Cable Control cables include analog and digital signal control cables. For analog signal control cables, twisted, dou- ble-shielded cables are used (Figure D-1;...

  • Page 162: Optional Parts

    ST300 Series Frequency Inverter Peripheral Accessories ST300-003G3 ST300-004G3 ST300-5R5G3 ST300-7R5G3 Note: The accessory specifications described in the table are ideal values. You can select the accessories depending on your requirements, but you should try to avoid using accessories with lower values.
  • Page 163 5.63 Note: • Select the brake resistors only according to the resistance and power data specified by Sourcetronic. • A braking resistor can increase the braking torque of the VFD. The table above describes the resistance and power for 100  % braking torque and 10  % , 50  % and 80  % braking application. Select the braking system according to the onsite conditions and requirements of your use case.

  • Page 164: Appendix E Sto Function

    ST300 Series Frequency Inverter STO Function Appendix E STO Function Before using the STO function, please read the following content carefully and observe all safety instructions in this user manual. E.1 Safety Standards The product has been integrated with the STO function and complies with the following safety standards.

  • Page 165: Safety Function Description

    ST300 Series Frequency Inverter STO Function E.2 Safety Function Description The Safe Torque Off (STO) function cuts off the VFD output by switching off the inverter signal, interrupting the power supply to the motor and thus stopping the torque output to the outside.

  • Page 166: Sto Function Wiring

    ST300 Series Frequency Inverter STO Function If an external force (e.g. the force of gravity on the vertical axis) is applied while the safety function is in operation, the motor will rotate. A separate mechanical brake must be provided to secure the motor.

  • Page 167: Sto Function Terminals

    ST300 Series Frequency Inverter STO Function Note: • The “K” symbol in the figure above can represent components such as manual switches, emergency stop switches, safety relays and safety PLC contacts. • The safety switch contact must be opened or closed within 200  m s.

  • Page 168: Acceptance Test

    ST300 Series Frequency Inverter STO Function E.8 Acceptance Test Warning • Technical personnel, users, maintenance and repair personnel must receive appropriate training so that they understand the requirements and principles of safety system design and troubleshooting. • Never carry out maintenance work on the frequency inverter or motor before the power supply has been disconnected! •...
  • Page 169 ST300 Series Frequency Inverter STO Function Disconnect the STO circuit. The VFD should then switch to “Safe Torque Off” mode and no longer supply voltage. The keypad will display “E40”. The motor should stop. Clear the error message, start the VFD and ensure that the motor remains at a standstill.

  • Page 170: Appendix F Energy Efficiency Data

    ST300 Series Frequency Inverter Energy Efficiency Data Appendix F Energy Efficiency Data Table F-1 Power Losses and IE Class Relative Loss (%) Standby VFD Model IE Class Loss (W) (0;25) (0;50) (0;100) (50;25) (50;50) (50;100) (90;50) (90;100) ST300-0R4G1 ST300-0R7G1 ST300-1R5G1...

  • Page 171: Appendix G Function Parameter List

    ST300 Series Frequency Inverter Function Parameter List Appendix G Function Parameter List The function parameters of the VFD are divided into groups based on their purpose. Among the function parameter groups, group P28 is the group for calibrating the analog inputs and outputs, while group P29 contains the factory function parameters which are not accessible to the user.
  • Page 172 ST300 Series Frequency Inverter Function Parameter List frequencies and the acceleration (ACC) and deceleration (DEC) speed. Setting Range: P00.04–599.00  H z Specifies the upper limit of the VFD operating frequency, which must be smaller than or equal to the max. output frequency.
  • Page 173 ST300 Series Frequency Inverter Function Parameter List Specifies how the two (A and B) are combined for the frequency reference value. Setting Range: 0–5 0: A Combination Mode 1: B P00.09 of Frequency ○ Reference Values 2: (A  +   B ) 3: (A ...
  • Page 174 ST300 Series Frequency Inverter Function Parameter List low frequency, decrease the torque, or even lead to oscillation. The carrier frequency has been properly set in the factory before shipping. Most of the time you will not need to modify it.

  • Page 175: P01-Start And Stop Control

    ST300 Series Frequency Inverter Function Parameter List 3: Lock all function codes Note: Resetting to default values will delete the user password. After the selected opera- tion is performed, this function code is auto- matically reset to 0. While it is set to 3 (lock all function codes), you cannot modify the value of any function code.
  • Page 176 ST300 Series Frequency Inverter Function Parameter List Note: • The S-curve is often used with eleva- tors, conveyors, and other scenarios where a smooth start/stop is required. • When S curve mode is selected, P01.06, P01.07, P01.27, and P01.28 need to be set accordingly.
  • Page 177 ST300 Series Frequency Inverter Function Parameter List Specifies the demagnetization time (that is, the required wait time before using DC brak- Demagnetization P01.10 0.00  s ○ ing to stop the device). Time Setting Range: 0.00–30.00  s Specifies the DC braking current (that is, the DC braking energy).
  • Page 178 ST300 Series Frequency Inverter Function Parameter List 0: Detect by the set speed (only in space volt- age vector control mode) 1: Detect by the feedback speed Specifies the stop speed detection time. Stop Speed ◎ P01.17 0.00  s Detection Time Setting Range: 0.00–100.00 ...
  • Page 179 ST300 Series Frequency Inverter Function Parameter List 1: Enable. If the restart condition is met, the VFD will run automatically (after waiting for the duration of the time defined by P01.22). Specifies the wait time before the VFD auto- Wait Time for matically resumes operation after power is re- P01.22...

  • Page 180: P02-Parameters Of Motor 1

    ST300 Series Frequency Inverter Function Parameter List then carry out DC braking in the time specified by P01.12. (See also: descriptions for P01.09– P01.12.) Setting Range: 0.00–50.00  s Pre-Excitation Time P01.32 Setting Range: 0.000–10.000  s 0.300  s ○ for Jogging Starting Frequency P01.33...
  • Page 181 ST300 Series Frequency Inverter Function Parameter List Leakage Inductance Model- P02.08 Setting Range: 0.1–6553.5  m H ○ of AM 1 dependent Mutual Inductance Model- P02.09 Setting Range: 0.1–6553.5  m H ○ of AM 1 dependent No-Load Current Model- P02.10 Setting Range: 0.01–655.35  A ○...
  • Page 182 ST300 Series Frequency Inverter Function Parameter List Direct-Axis Model- P02.21 Setting Range: 0.01–655.35  m H ○ Inductance of SM 1 dependent Quadrature-Axis Model- P02.22 Setting Range: 0.01–655.35  m H ○ Inductance of SM 1 dependent Counter-EMF P02.23 Setting Range: 0–10000 ○...
  • Page 183 ST300 Series Frequency Inverter Function Parameter List • When M=150%, overload protection occurs if motor overload lasts for 12  m in • When M=200%, overload protection occurs if motor overload lasts for 60  s • When M≥400%, overload protection occurs immediately.

  • Page 184: P03-Vector Control Of Motor 1

    ST300 Series Frequency Inverter Function Parameter List P03—Vector Control of Motor 1 Function Name Description Default Modifiable? Code Setting Range: 0.0–200.0 Speed-Loop P03.00 20.0 ○ Proportional Gain 1 Note: Applicable only to vector control mode. Setting Range: 0.000–10.000  s Speed-Loop P03.01...
  • Page 185 ST300 Series Frequency Inverter Function Parameter List Setting Range: 0–2000 Note: • P03.10 is a current loop PI regulation parameter that impacts the system’s Current-Loop P03.10 ○ dynamic response speed and control Band Width accuracy. Most of the time you will not need to modify it.
  • Page 186 ST300 Series Frequency Inverter Function Parameter List Note: For AMs, 100% corresponds to the mo- tor rated torque current; for SMs, 100% corre- sponds to the motor rated current. Torque Reference P03.13 Setting Range: 0.000–10.000  s 0.010  s ○ Filter Time...
  • Page 187 ST300 Series Frequency Inverter Function Parameter List Through the Keypad Note: 100% corresponds to the max. fre- in Torque Control quency. Specifies the reverse rotation frequency limit Setting Reverse when it’s set to be defined via the keypad. Rotation Frequency P03.17...
  • Page 188 ST300 Series Frequency Inverter Function Parameter List 5: Modbus communication Note: • For AMs, 100% corresponds to the motor rated torque current when the value 0 is selected, and corresponds to triple the motor rated torque current when a value from 1 to 5 is selected.
  • Page 189 ST300 Series Frequency Inverter Function Parameter List Specifies the motor’s pre-excitation time. Pre-excitation is performed on the motor when the VFD starts up. A magnetic field is built up P03.25 Pre-Excitation Time 0.300  s ○ inside the motor to improve the torque perfor- mance during the start-up process.
  • Page 190 ST300 Series Frequency Inverter Function Parameter List 0: Torque reference 1: Torque current reference Tens digit: Reserved 0: Reserved 1: Reserved Hundreds digit: indicates whether to enable speed-loop integral separation 0: Disable 1: Enable Thousands digit: Reserved 0: Reserved 1: Reserved Speed-Loop P03.36...

  • Page 191: P04-V/F Control

    ST300 Series Frequency Inverter Function Parameter List P04—V/F Control Function Name Description Default Modifiable? Code Specifies the V/F curve type of motor 1 to meet the needs of different loads. Setting Range: 0–5 0: Straight-line V/F curve, applicable to con-...
  • Page 192 ST300 Series Frequency Inverter Function Parameter List Note: •   <   V   <   V •   <   f   <   f • Too high voltage for too low frequency will cause motor to overheat or take damage and will cause a VFD overcur- rent stalling or overcurrent protection.
  • Page 193 ST300 Series Frequency Inverter Function Parameter List perience current oscillation at certain frequen- cies, which may cause unstable motor opera- High-Frequency tion, or even a VFD overcurrent. P04.11 Oscillation Control ○ You can adjust these two function parameters Factor of Motor 1 properly to avoid this.
  • Page 194 ST300 Series Frequency Inverter Function Parameter List Specifies the upper limit of output voltage. ◎ P04.31 Max. Output Voltage 100.0% Setting Range: P04.32–100.0% (of the motor’s rated voltage) Specifies the lower limit of output voltage. ◎ P04.32 Min. Output Voltage 0.0%...

  • Page 195: P05-Input Terminals

    ST300 Series Frequency Inverter Function Parameter List While SM VF control mode is enabled, the Reactive Current function code specifies the integral coefficient Closed-Loop P04.38 ○ of the reactive current closed-loop control. Integral Coefficient in SM V/F control Setting Range: 0–3000 P04.39–...
  • Page 196 ST300 Series Frequency Inverter Function Parameter List 15: Switch between frequency combination setting and setting B 16: Multi-step speed terminal 1 17: Multi-step speed terminal 2 ◎ P05.04 S4 Function 18: Multi-step speed terminal 3 19: Multi-step speed terminal 4...
  • Page 197 ST300 Series Frequency Inverter Function Parameter List 43–55: Reserved 56: Emergency stop 57–60: Reserved 61: Switch PID polarities 62–95: Reserved ◎ P05.09 HDIA Function Note: Terminals S5–S8 are virtual terminals, which are enabled via P05.12. After a virtual terminal is enabled, the terminal status can then only be changed in modbus communica- tion mode.
  • Page 198 ST300 Series Frequency Inverter Function Parameter List Specifies the terminal control mode. Setting Range: 0–3 0: Two-wire control mode 1 Terminal ◎ P05.13 Control Mode 1: Two-wire control mode 2 2: Three-wire control mode 1 3: Three-wire control mode 2 P05.14...
  • Page 199 ST300 Series Frequency Inverter Function Parameter List AI1 Input P05.32 Setting Range: 0.00  V –P05.34 0.00  V ○ Lower Limit Corresponding P05.33 Setting of Setting Range: -300.0%–300.0% 0.0% ○ AI1 Lower Limit AI1 Input P05.34 Setting Range: P05.32–10.00  V 10.00  V ○...
  • Page 200 ST300 Series Frequency Inverter Function Parameter List Corresponding P05.45 Setting of Setting Range: -300.0%–300.0% 100.0% ○ AI3 Upper Limit P05.46 AI3 Input Filter Time Setting Range: 0.000–10.000  s 0.030  s ○ HDIA Frequency P05.47 Setting Range: 0.000  k Hz–P05.49 0.000  k Hz ○...

  • Page 201: P06-Output Terminals

    ST300 Series Frequency Inverter Function Parameter List P06—Output Terminals Function Name Description Default Modifiable? Code P06.00 Reserved – – – Setting Range: 0–63 P06.01 Y1 Output ○ 0: Disable 1: Operating (Running) 2: Forward running operation P06.02 Reserved – –...
  • Page 202 ST300 Series Frequency Inverter Function Parameter List 27–28: Reserved 29: STO action 30–36: Reserved 37: Any frequency reached 38–63: Reserved P06.04 Reserved – – – Specifies output terminal polarity. Setting Range: 0x00–0x0F BIT0: Y1 Output Terminal P06.05 0x00 ○ Polarity...
  • Page 203 ST300 Series Frequency Inverter Function Parameter List Setting Range: 0–63 0: Operating frequency (100% corresponds to max. output frequency) 1: Set frequency (100% corresponds to max. output frequency) 2: Ramp reference frequency (100% corre- sponds to max. output frequency) 3: Rotational speed (100% corresponds to the speed corresponding to the max.
  • Page 204 ST300 Series Frequency Inverter Function Parameter List 25: Ramp reference frequency (bipolar) 26: Rotational speed (bipolar) 27–29: Reserved 30: Rotational speed (100% corresponds to twice the motor rated synchronous speed) 31: Output torque (100% corresponds to twice the motor rated torque) 32–63: Reserved...

  • Page 205: P07-Human-Machine Interface

    ST300 Series Frequency Inverter Function Parameter List P07—Human-Machine Interface Function Name Description Default Modifiable? Code The user password protection function is dis- abledby default. If P07.00 is set to any non-zero value, the password protection function is enabled. After you exit the function code editing interface, the password takes effect within 1 ...
  • Page 206 ST300 Series Frequency Inverter Function Parameter List 5: Coast to stop 6: Switch command channels in sequence (P07.03) Tens digit: Reserved Specifies the sequence of switching operating command channels by pressing the key when P07.02  =   6 . Sequence of Setting Range: 0–3...
  • Page 207 ST300 Series Frequency Inverter Function Parameter List Bit 10: Input terminal status Bit 11: Output terminal status Bit 12: Set torque (“%” ON) Bit 13: Pulse count value Bit 14: Motor overload percentage (“%” ON) Bit 15: PLC and current step number of multi- step speed Setting Range: 0x0000–0Xffff...
  • Page 208 ST300 Series Frequency Inverter Function Parameter List Bit 12: Count value Bit 13: PLC and current step number of multi- step speed operation Bit 14: Frequency upper limit Bit 15: Reserved Setting Range: 0.01–10.00 Frequency Display P07.08 1.00 ○ Displayed frequency  =   O perating frequency ·...
  • Page 209 ST300 Series Frequency Inverter Function Parameter List P07.17 VFD Model Setting Range: 0–1 ● P07.18 VFD Rated Power Setting Range: 0.4–3000.0  k W 0.4  k W ● P07.19 VFD Rated Voltage Setting Range: 50–52  0 V 380V ● P07.20 VFD Rated Current Setting Range: 0.01–600.00 ...
  • Page 210 ST300 Series Frequency Inverter Function Parameter List 16: Inverter module overheat (E16) 17: External error (E17) 18: Modbus communication error (E18) 19: Current detection error (E19) P07.29 -Last Error Type ● 20: Motor autotuning error (E20) 21: EEPROM operation error (E21)
  • Page 211 ST300 Series Frequency Inverter Function Parameter List Operating P07.33 Frequency at Setting Range: 0.00  H z–P00.03 0.00  H z ● Present Error Ramp Reference P07.34 Frequency at Setting Range: 0.00  H z–P00.03 0.00  H z ● Present Error Output Voltage at P07.35...
  • Page 212 ST300 Series Frequency Inverter Function Parameter List Temperature at P07.46 Setting Range: -20.0°C–120.0°C 0.0°C ● Last Error Input Terminal P07.47 Status at Setting Range: 0x0000–0xFFFF 0x0000 ● Last Error Output Terminal P07.48 Status at Setting Range: 0x0000–0xFFFF 0x0000 ● Last Error Operating P07.49...

  • Page 213: P08-Enhanced Functions

    ST300 Series Frequency Inverter Function Parameter List P08—Enhanced Functions Function Name Description Default Modifiable? Code Model- P08.00 ACC Time 2 Setting Range: 0.0–3600.0  s ○ dependent Model- P08.01 DEC Time 2 Setting Range: 0.0–3600.0  s ○ dependent Model- P08.02 ACC Time 3 Setting Range: 0.0–3600.0 ...
  • Page 214 ST300 Series Frequency Inverter Function Parameter List The VFD supports the setting of three jump frequencies. When the jump frequency points are set to 0, this function is inactive. Setting Range: 0.00  H z–P00.03 See the description of P08.09. Jump Frequency P08.10...
  • Page 215 ST300 Series Frequency Inverter Function Parameter List Setting Range: 0–2 0: Max. output frequency Reference ◎ P08.21 Frequency of 1: Set frequency ACC/DEC Time 2: 100  H z Note: Valid for straight ACC/DEC only. Setting Range: 0–1 Output Torque P08.22 0: Based on torque current ○...
  • Page 216 ST300 Series Frequency Inverter Function Parameter List Setting Range: 0.1–3600.0  s Specifies the variation rate of the VFD output frequency based on the load. It is mainly used Frequency in balancing the power when multiple motors P08.30 Decrease Ratio in 0.00 ...
  • Page 217 ST300 Series Frequency Inverter Function Parameter List frequency corresponding to (FDT electrical level) – (FDT lagging detection value). Setting Range: 0.00  H z–P00.03 Used to view the FDT2 lagging detection value. When the output frequency exceeds the corresponding frequency of the FDT elec- trical level, the multifunction digital output ter- minal continuously outputs the signal of “Fre-...
  • Page 218 ST300 Series Frequency Inverter Function Parameter List Ones digit: PWM mode selection 0: PWM mode 1, 3PH modulation 1: PWM mode 2, 3PH modulation and 2PH modulation Tens digit: PWM low-speed carrier frequency limit 0: Low-speed carrier frequency limit mode 1...
  • Page 219 ST300 Series Frequency Inverter Function Parameter List 2: Invalid for multi-step speed operation when multi-step speed operation has priority Hundreds digit: Stop action 0: Setting remains valid. 1: Valid during operation, cleared after stop 2: Valid during operation, cleared after a stop...
  • Page 220 ST300 Series Frequency Inverter Function Parameter List the rotor) increases during magnetic flux brak- ing; therefore the cooling is better. 0: Disable 100–150: A larger value indicates stronger braking. Setting Range: 0; 100–150 Used to adjust the current display value on the VFD Input AC input side.
  • Page 221 ST300 Series Frequency Inverter Function Parameter List the carrier frequency when detecting that the heat sink temperature exceeds the rated tem- perature. When the temperature decreases to a specified value, the carrier frequency is re- stored to its previous setting.

  • Page 222: P09-Pid Control

    ST300 Series Frequency Inverter Function Parameter List P09—PID Control Function Name Description Default Modifiable? Code Specifies the channel through which the VFD will receive target values during the PID pro- cess. Setting Range: 0–6 0: Keypad (P09.01) 1: AI1 2: AI2...
  • Page 223 ST300 Series Frequency Inverter Function Parameter List When the feedback signal is greater than the PID reference value, the output fre- quency of the VFD will decrease to bal- ance the PID. 1: PID output is negative. When the feedback signal is greater than...
  • Page 224 ST300 Series Frequency Inverter Function Parameter List Specifies the lower limit of the PID output val- ues. 100.0% corresponds to the max. output PID Output Lower P09.10 0.0% ○ frequency (P00.03) or max. voltage (P04.31). Limit Setting Range: -100.0%–P09.09 Specifies the PID feedback offline detection Feedback Offline value.

  • Page 225: P10-Simple Plc And Multi-Step Speed Control

    ST300 Series Frequency Inverter Function Parameter List ACC/DEC Time of P09.15 Setting Range: 0.0–1000.0  s 0.0  s ○ PID Command P09.16 PID Output Filter Time Setting Range: 0.000–10.000  s 0.000  s ○ P09.17 Reserved – – – Low Frequency P09.18 Setting Range: 0.00–10.00 ...
  • Page 226 ST300 Series Frequency Inverter Function Parameter List Setting Range: 0–1 0: Do not memorize at power outage Simple PLC Memory P10.01 ○ 1: Memorize at power outage. The PLC mem- Selection ories its running stage and operating fre- quency before power-off.
  • Page 227 ST300 Series Frequency Inverter Function Parameter List Setting Range: -300.0–300.0% P10.12 Multi-Step Speed 5 0.0% ○ The setting 100.0% corresponds to the max. output frequency (P00.03). Setting Range: 0.0–6553.5  s (min) Running Time P10.13 0.0  s (min) ○ Step 5 The time unit is specified by P10.37.
  • Page 228 ST300 Series Frequency Inverter Function Parameter List The time unit is specified by P10.37. Setting Range: -300.0–300.0% P10.24 Multi-Step Speed 11 0.0% ○ The setting 100.0% corresponds to the max. output frequency (P00.03). Setting Range: 0.0–6553.5  s (min) Running Time P10.25...

  • Page 229: P11-Protective Parameters

    ST300 Series Frequency Inverter Function Parameter List ACC/DEC Time for P10.35 Steps 8–15 of Setting Range: 0x0000–0xFFFF 0x0000 ○ Simple PLC Setting Range: 0–1 0: Restart from the first step; namely if the VFD stops mid-run (caused by stop com- mand, error or power down), it will run from the first step upon restart.
  • Page 230 ST300 Series Frequency Inverter Function Parameter List Setting Range: 0–1 Energy-Consumption ◎ P11.02 0: Disable Braking 1: Enable Setting Range: 0–1 Overvoltage P11.03 0: Disable ○ Stalling Protection 1: Enable For 220V models: Overvoltage 120% Setting Range: 120%–150% (of the standard P11.04...
  • Page 231 ST300 Series Frequency Inverter Function Parameter List 0: Motor OL/UL pre-alarm, relative to the motor rated current. 1: VFD OL/UL pre-alarm, relative to the VFD rated output current. 2: Motor output torque OL/UL pre-alarm, rela- tive to the motor rated torque.
  • Page 232 ST300 Series Frequency Inverter Function Parameter List Underload Pre-Alarm P11.12 Setting Range: 0.1–3600.0  s 1.0  s ○ Detection Time Specifies how error output terminals react at undervoltage and error reset. Setting Range: 0x00–0x11 Error Output Ones digit: Terminal Action 0: Act upon an undervoltage error P11.13...
  • Page 233 ST300 Series Frequency Inverter Function Parameter List Specifies the integral coefficient of the active Integral Coefficient current regulator in the event of undervoltage of Current Regulator P11.20 ○ stalling. During Undervoltage Stalling Setting Range: 0–2000 Proportional Specifies the proportional coefficient of the bus...

  • Page 234: P13-Sm Control

    ST300 Series Frequency Inverter Function Parameter List Setting Range: 0.0–60.0  s SPO Detection Note: The SPO detection is started only after P11.28 Switch-On Delay 5.0  s ○ the VFD runs for the delay time P11.28 to avoid Time false alarms caused by the unstable frequency.
  • Page 235 ST300 Series Frequency Inverter Function Parameter List Setting Range: -100.0%–100.0% (of the mo- tor’s rated current) Switch-Over Setting Range: 0.0%–200.0% (of the motor’s P13.04 Frequency of 20.0% ○ rated frequency) Pull-In Current SVC Observer ◎ P13.05 Speed Feedback Setting Range: 10.0–200.0 62.5...

  • Page 236: P14-Serial Communication

    ST300 Series Frequency Inverter Function Parameter List P14—Serial Communication Function Name Description Default Modifiable? Code Setting Range: 1–247 When the master writes the slave communi- cation address to 0 indicating a broadcast ad- dress in a frame, all the slaves on the Modbus Local bus receive the frame but do not respond to it.
  • Page 237 ST300 Series Frequency Inverter Function Parameter List Note: The data format set on the VFD must be consistent with that on the host controller. Otherwise, the communication fails. Communication P14.03 Setting Range: 0–200  m s 5  m s ○ Response Delay Setting Range: 0.0–60.0 ...

  • Page 238: P17-Status Viewing

    ST300 Series Frequency Inverter Function Parameter List User-Defined P14.08 Frequency Setting Setting Range: 0x0000–0xFFFF 0x2001 ○ Address Monitoring Variable P14.09 Setting Range: 0x0000–0xFFFF 0x0000 ○ Address 1 Monitoring Variable P14.10 Setting Range: 0x0000–0xFFFF 0x0000 ○ Address 2 Monitoring Variable P14.11 Setting Range: 0x0000–0xFFFF...
  • Page 239 ST300 Series Frequency Inverter Function Parameter List Displays the present torque current of the VFD. P17.06 Torque Current 0.00A ● Setting Range: -300.00–300.00  A Displays the present excitation current of the VFD. P17.07 Excitation Current 0.00  A ● Setting Range: -300.00–300.00  A Displays the present motor power.
  • Page 240 ST300 Series Frequency Inverter Function Parameter List Indicates the current motor’s percentage of the rated torque, displaying the torque reference. Torque P17.15 0.0% ● Reference Value Setting Range: -300.0%–300.0% (of the mo- tor’s rated current) P17.16 Linear Speed 0–65  5 35 ●...
  • Page 241 ST300 Series Frequency Inverter Function Parameter List Displays the ASR controller output value as a percentage relative to the rated motor torque Motor ASR under the vector control mode. P17.28 0.0% ● Controller Output Setting Range: -300.0%–300.0% (of the mo- tor’s rated current)
  • Page 242 ST300 Series Frequency Inverter Function Parameter List Function Code P17.39 in Parameter Setting Range: 0.00–99.00 0.00 ● Download Error Setting Range: 0x000–0x122 Ones digit: Control mode 0: Open-loop vector control 1: Reserved 2: VF control Tens digit: Open-loop vector control mode P17.40...
  • Page 243 ST300 Series Frequency Inverter Function Parameter List Friction Compensation P17.46 Setting Range: -100.0%–100.0% 0.0% ● Torque P17.47 Motor Pole Pairs Setting Range: 0–65  5 35 ● VFD Overload P17.48 Setting Range: 0–65  5 35 ● Count Value Frequency Set by P17.49...

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