1. Introduction and Safety Information
Thank you for choosing the SUSWE SU800/900 series frequency converter. This manual provides essential information for the correct and safe use of the product. Please read it carefully before installation, debugging, and maintenance, and keep it for future reference.
1.1 Safety Notices
Safety notices in this manual are categorized as follows:
- Danger: Indicates operations that, if not performed according to requirements, may cause serious injury or death.
- Attention: Indicates operations that, if not performed according to requirements, may cause medium or minor injury, or equipment damage.
Always operate the device according to the safety notices provided. The manufacturer is not responsible for any injury or loss caused by non-compliance with these requirements.
This manual is intended for:
- System design and model selection staff.
- Installation and wiring staff.
- Debugging staff.
- Maintenance staff.
For a detailed PDF version of the user manual, please refer to the Item Guides & Documents (PDF).
2. Product Specifications
2.1 General Product Information
| Attribute | Value |
|---|---|
| Brand Name | SUSWE |
| Model Number | SU800/900 |
| Type | DC/AC Inverters |
| Output Type | SINGLE |
| Output Power | 4KW-15KW (Range) |
| Output Current | 2.1-32A (Range) |
| Input Voltage | 220V/380V |
| Input Frequency | 50/60HZ |
| Protection Level | IP20 |
| Temperature Range | -20~+60°C |
| Cooling Mode | Self-cooling fan |
| Product Protection | 6 great protections |
| Certification | CE, FCC, RoHS |
| Origin | Mainland China |
| Weight | 1.5-10kg (Range) |
| Size | 242*125*170MM (Example size, actual size varies by model) |
2.2 Frequency Converter Series Index (SU800/900)
The following tables detail the power supply capacity, rated input/output current, and adapted motor power for various models in the SU800/900 series.
Single Phase Power Supply: 220V, 50Hz/60Hz
| Frequency Converter Mode | Power Supply Capacity (KVA) | Rated Input Current (A) | Rated Output Current (A) | Adapted Motor kW | Adapted Motor HP |
|---|---|---|---|---|---|
| SU800-0R75G1 | 1.5 | 8.2 | 2.5 | 0.75 | 1 |
| SU800-1R5G1 | 3 | 14 | 4.1 | 1.5 | 2 |
| SU800-2R2G1 | 4 | 23 | 5.8 | 2.2 | 3 |
| SU800-4R0G1 | 5.5 | 31 | 9 | 4 | 4 |
| SU800-5R5G1 | 8.9 | 26 | 13 | 5.5 | 5 |
| SU800-7R5G1 | 21 | 35 | 17 | 7.5 | 10 |
| SU800-0R75G2 | 1.5 | 8.2 | 4 | 0.75 | 1 |
| SU800-1R5G2 | 3 | 14 | 7 | 1.5 | 2 |
| SU800-2R2G2 | 4 | 23 | 9.6 | 2.2 | 3 |
| SU800-4R0G2 | 5.5 | 31 | 17 | 4 | 4 |
| SU800-5R5G2 | 8.9 | 26 | 25 | 5.5 | 5 |
| SU800-7R5G2 | 21 | 35 | 32 | 7.5 | 10 |
Three Phase Power Supply: 380V, 50Hz/60Hz
| Frequency Converter Mode | Power Supply Capacity (KVA) | Rated Input Current (A) | Rated Output Current (A) | Adapted Motor kW | Adapted Motor HP |
|---|---|---|---|---|---|
| SU800-0R75G3 | 1.5 | 3.6 | 2.5 | 0.75 | 1 |
| SU800-1R5G3 | 3 | 5.1 | 4.1 | 1.5 | 2 |
| SU800-2R2G3 | 4 | 6 | 5.8 | 2.2 | 3 |
| SU800-4R0G3 | 6.1 | 10.5 | 9 | 4 | 5 |
| SU800-5R5G3 | 8.9 | 14 | 13 | 5.5 | 7.5 |
| SU800-7R5G3 | 11 | 21 | 17 | 7.5 | 10 |
| SU900-0R75G3 | 1.5 | 3.6 | 2.5 | 0.75 | 1 |
| SU900-1R5G3 | 3 | 5.1 | 4.1 | 1.5 | 2 |
| SU900-2R2G3 | 4 | 6 | 5.8 | 2.2 | 3 |
| SU900-4R0G3 | 6.1 | 10.5 | 9 | 4 | 5 |
| SU900-5R5G3 | 8.9 | 14.6 | 13 | 5.5 | 7.5 |
| SU900-7R5G3 | 11 | 21 | 17 | 7.5 | 10 |
| SU900-11R0G3 | 17 | 26 | 25 | 11 | 15 |
| SU900-15R0G3 | 21 | 35 | 32 | 15 | 20 |
| SU900-18R5G3 | 24 | 38.5 | 37 | 18.5 | 25 |
| SU900-22R0G3 | 30 | 46.5 | 45 | 22 | 30 |
| SU900-30R0G3 | 40 | 62 | 60 | 30 | 40 |
| SU900-37R0G3 | 57 | 76 | 75 | 37 | 50 |
| SU900-45R0G3 | 69 | 92 | 91 | 45 | 60 |
2.3 Product Dimensions and External Units
The physical dimensions vary by model. Below are diagrams for different external units (C1, C2, C3, C4, C5) and their corresponding models.
3. Installation and Wiring
3.1 Main Circuit Terminals and Wiring
The main circuit terminals are used for power input, braking resistance connection, and motor output.
| Terminal Marks | Name | Instruction |
|---|---|---|
| R, S, T / L, N | Power supply input terminals | Connection point for three-phase 380V / single-phase 220VAC power supply |
| P+, PB | Brake electric resistance connect terminals | Connect brake electric resistance |
| U, V, W | Frequency converter output terminals | Connect three-phase motor |
| & | Grounding terminals | Grounding terminals |
3.2 Wiring Diagrams
Ensure all wiring is done by qualified personnel following local electrical codes and safety standards.
3.3 Control Terminals Instruction
The control circuit terminals allow for external control and monitoring. It is crucial to use shielded cables for analog signals and keep cable distances short (not exceeding 20m) to minimize interference.
| Category | Terminal Symbol | Terminal Name | Function Instruction |
|---|---|---|---|
| Power Supply | 10V - GND | Outer connect 10V power supply | 150mA (with short circuit protection) for external electric potential devices. Resistance range: 1kΩ ~ 5kΩ. |
| 24V - COM | Outer connect 24V power supply | +24V power supply for digital input/output terminals and external sensor power supply. Max output current: 200mA. | |
| Analog Input | AI1-GND | Analog quantity input terminal 1 | Input range: DC 0V ~ 10V / 0mA ~ 20mA (parameter P4-37). Input impedance: 22kΩ (voltage), 500Ω (current). |
| AI2-GND | Analog quantity input terminal 2 | Input range: DC 0V ~ 10V / 0mA ~ 20mA (parameter P4-39). Input impedance: 22kΩ (voltage), 500Ω (current). | |
| AO1-GND | Analog quantity input terminal 1 | Output voltage range: 0V-10V. Output current range: 0mA ~ 20mA, 4~20mA (P5-23 optional). | |
| Digital Input | X1-COM | Digit input 1 | Multifunctional digital input terminals. HDI can also be used as a high-speed pulse input (up to 50KHz). Input impedance: 1kΩ. Input voltage range: 5V-30V. |
| X2-COM | Digit input 2 | ||
| X3-COM | Digit input 3 | ||
| X4-COM | Digit input 4 | ||
| HDI-COM (X5 terminal) | Digit input 5 | High-speed pulse input. Max frequency: 50KHz. | |
| Communication | A+ B- | RS485 communication | A+ is positive input, B- is negative input for 485 communication differential signal. |
| Digital Output | Y1-COM | Collector open circuit output | As the collector open circuit output terminal (800/900 J1 jump to AO2 on the isolated control board). |
| HDO-COM | High speed pulse output | Configurable via P5-00. Max frequency 50KHz. | |
| K1A-K1B-K1C, K2A-K2B-K2C | Electric relay 1/2 terminal | Contact description: A: public point, B: normally close point, C: normally open point. Drive capacity: AC250V, 3A; DC 30V, 1A. |
4. Operation and Display
4.1 Operating Panel Interface
The operating panel allows you to modify function parameters, monitor the VFD's status, and control its operation (start/stop).
4.2 Function Indicator Lamps
- RUN: Lamp off indicates stop, lamp on indicates running.
- LOCAL/REMOTE: Extinguished for panel start-stop, normally lit for terminal start-stop, flashing for communication start-stop.
- FWD/REV: Lamp on indicates forward status.
- TUNE/TC: Lamp on indicates torque control mode, slow flashing for tune status, quick flashing for failure status.
4.3 Unit Indicator Lamps
| Indicator | Unit |
|---|---|
| Hz | Frequency unit |
| A | Current unit |
| V | Voltage unit |
| RPM(Hz+A) | Speed unit |
| %(A+V) | Percentage |
4.4 Keyboard Button Functions
| Key | Key Name | Function |
|---|---|---|
| PRG | Programming Key | Enter or exit Level I menu. |
| ENTER | Confirm Key | Enter menu levels, confirm parameter settings. |
| ▲ | Progressively Increase Key | Increase data or function code values. |
| ▼ | Progressively Reduce Key | Decrease data or function code values. |
| ► | Shift Key | Cycle through display parameters, select modify bit for parameters. |
| RUN | Running Key | Used for running operation under keyboard control. |
| STOP/RES | Stop/Reset Key | Stop running, reset from failure alarm status. Functionality is restrained by P7-02. |
| MF.K | Multiply Functions Select Key | Select process function shift according to P7-01. |
4.5 Key Function Parameters (Overview)
The VFD has numerous configurable parameters organized into groups (P0-P9, PA-PP, A0-A5, b0, U0). Here's a brief overview of some common and important parameters. For a complete list and detailed descriptions, refer to the full PDF manual.
P0 Group - Basic Running Parameters
- P0-00 G/P model: Selects general (G) or pump (P) model.
- P0-01 Order source select: Defines how the VFD receives speed commands (e.g., no speed sensor vector control, V/F control).
- P0-02 Order source selec: Defines the source for start/stop commands (e.g., panel, terminal, communication).
- P0-03 Main frequency source X selection: Selects the primary frequency command source (e.g., digit setting, AI1, AI2, keyboard potentiometer, HDI pulse setting, communication).
- P0-10 The max frequency: Sets the maximum output frequency (e.g., 50.00Hz to 3200.0Hz).
- P0-17 Accelerate time 1: Sets the acceleration time.
- P0-18 Moderate time 1: Sets the deceleration time.
P1 Group - Motor Parameters
- P1-00 Order source select: Selects motor type (common asynchronous, frequency converter asynchronous, permanent magnet synchronous).
- P1-01 Motor rated power: Sets the rated power of the connected motor (e.g., 0.1KW to 1000KW).
- P1-02 Motor rated voltage: Sets the rated voltage of the connected motor (e.g., 1V to 380V).
- P1-03 Motor rated current: Sets the rated current of the connected motor (e.g., 0.01A to 100.00A).
- P1-04 Motor rated frequency: Sets the rated frequency of the connected motor.
P4 Group - Input Terminal Parameters
- P4-00 X1 terminal function select: Configures the function of digital input terminal X1 (e.g., forward running, reverse running, failure reset).
- P4-01 X2 terminal function select: Configures the function of digital input terminal X2.
- P4-04 HDI(X5) terminal function selection: Configures the function of the HDI terminal.
- P4-37 AI input voltage/current select: Selects whether AI1/AI2 are voltage or current inputs.
P6 Group - Start and Stop Control
- P6-00 Startup mode: Defines how the VFD starts (e.g., direct start, speed tracking, pre-excitation start).
- P6-03 Start frequency: Sets the frequency at which the VFD starts.
- P6-10 Stop machine method: Defines how the VFD stops (e.g., moderate stop, free stop).
P7 Group - Keyboard and Display
- P7-01 MF.K Key function select: Configures the function of the multi-function key.
- P7-02 STOP/RESET Key function: Configures the stop/reset key behavior.
- P7-03 LED running display parameter 1: Selects the parameter displayed on the LED during operation.
4.6 Communication Protocol (Modbus-RTU)
The SU800/900 series inverters support Modbus-RTU communication protocol via an RS485 interface. This allows for centralized control, parameter setting, and status monitoring using a computer or PLC.
- Slave Address: Each device in the network must have a unique slave address (1-247). 0 is for broadcast communication.
- Baud Rate: Configurable (e.g., 9600BPS, 19200BPS, 38400BPS) via parameter Pd-00. The host and VFD must have matching baud rates.
- Data Format: Configurable (e.g., 8-N-2, 8-E-1, 8-O-1) via parameter Pd-01. Must match between host and VFD.
- Control Commands: The host can send commands (e.g., positive operation, reverse operation, stop) to the VFD via specific communication addresses (e.g., 2000H for control commands).
- Parameter Access: Function code parameters (P and A groups) and monitoring parameters (U group) can be read and written via their respective communication addresses.
For detailed information on communication addresses, data formats, and error handling, please refer to Chapter 5 of the full PDF manual.
5. Maintenance
Regular maintenance ensures the longevity and reliable operation of your SUSWE VFD. Perform the following checks periodically:
- Cleaning: Keep the VFD and its cooling fan free from dust and debris. Ensure air channels are not blocked to maintain efficient heat dissipation.
- Connections: Regularly inspect all wiring connections (power, motor, control) for tightness and signs of wear or corrosion. Loose connections can lead to malfunctions or damage.
- Environment: Ensure the operating environment remains within the specified temperature range (-20~+60°C) and is free from excessive humidity, corrosive gases, or vibrations.
- Fan Check: Verify that the cooling fan is operating normally and without unusual noises. Replace if damaged or malfunctioning.
- Parameter Backup: Periodically back up your VFD's parameter settings, especially after making significant changes. This can help in quick restoration in case of a fault or replacement.
If any components appear damaged or worn, contact technical support for assistance.
6. Troubleshooting
This section provides guidance on diagnosing and resolving common issues and fault alarms. When a fault occurs, the VFD display panel will show an error code. Refer to the tables below for possible causes and recommended solutions.
6.1 Fault Alarm and Policies (Chapter 6.1 from PDF)
| Failure Name | Failure Code | Failure Reason (Common) | Treatment Policies (Common) |
|---|---|---|---|
| Inverter unit protection | Err1 | Output circuit short circuit, long motor/VFD wiring, overheat module, loose internal wiring, abnormal control/drive board. | Solve outer failure, install reactor/filter, check air channel, plug in wiring well, seek technical support. |
| Accelerate over current | Err2 | Output circuit grounding/short circuit, incorrect control method/parameters, too short accelerate time, unsuitable V/F curve, lower voltage, sudden load during accelerating. | Solve outer failure, process motor parameter identification, increase accelerate time, adjust V/F curve, adjust voltage, select speed tracing start, cancel sudden load, select bigger power VFD. |
| Moderate over current | Err3 | Similar to Err2, but related to deceleration. | Similar to Err2, but related to deceleration. |
| Constant speed over current | Err4 | Similar to Err2, but related to constant speed operation. | Similar to Err2, but related to constant speed operation. |
| Accelerate over voltage | Err5 | Higher input voltage, outer force driving motor, too short accelerate time, no brake unit/resistance. | Adjust voltage, cancel additional power/add braking resistance, increase accelerate time, install brake unit/resistance. |
| Lack voltage failure | Err09 | Input voltage not in range, abnormal bus line voltage, abnormal rectification bridge/recoil resistance, abnormal drive/control board. | Reset failure, adjust voltage, seek technical support. |
| Frequency converter over load | Err10 | Too big load or motor blocked, smaller VFD model. | Reduce load, check motor/mechanical situation, select bigger power VFD. |
| Motor overload | Err11 | Incorrect P9-01 setting, too big load or motor blocked, smaller VFD model. | Correct P9-01, reduce load, check motor/mechanical situation, select bigger power VFD. |
| Input lack phase | Err12 | Abnormal three-phase input, abnormal drive/lightning protection/main control board. | Check/solve outer circuit problems, seek technical support. |
| Output lack phase | Err13 | Abnormal lead wire to motor, unbalance VFD output, abnormal drive board/module. | Solve outer failure, check motor winding, seek technical support. |
| Module overheat | Err14 | High environment temperature, blocked air channel, damaged fan/thermal resistor/inverter module. | Reduce temperature, clean air channel, renew fan/thermal resistor/inverter module. |
| Communication failure | Err16 | Abnormal host computer/communication wire, incorrect communication parameters. | Check host computer/communication wiring, correct communication parameters. |
| Motor tune failure | Err19 | Motor parameters not set correctly, parameter identification process overtime. | Correct motor parameters, check lead wire. |
| Frequency converter hardware failure | Err22 | Existing over voltage, existing over current. | Treat according to over voltage/current failure. |
| Grounding short circuit failure | Err23 | Motor grounding short circuit. | Renew cable or motor. |
6.2 Common Failure and Solve Methods (Chapter 6.2 from PDF)
| S/N | Failure Appearance | Possible Reason | Solve Method |
|---|---|---|---|
| 1 | Power on but no indication (8.8.8.8.8) | No power grid voltage or too low; power supply failure; damaged rectification bridge/buffer; control board/keyboard/wiring broken. | Check input power supply/bus line voltage; seek factory service. |
| 2 | Power on repeat indication | Bad contact wiring between drive/control board; damaged control board apparatus; too low power grid voltage; drive board power supply problems. | Re-insert main board pin socket; seek factory service; check power grid voltage. |
| 3 | Power on indicates "Err23" alarm | Motor or output wire grounding short circuit; frequency converter damaged. | Use meter to measure insulation of motor/output wire; seek factory service. |
| 4 | Power on indication normal, but "Err14" after running | Fan damaged or blocked; outer control terminal wiring short circuit. | Renew fan; solve outer short circuit failure; seek factory service. |
| 5 | Frequently report Err14 (module overheat) failure | Too high carriage frequency setting; fan damaged or air channel blocked; damaged apparatus (thermocouple). | Reduce carriage frequency (P0-15); renew fan and clean air channel; seek factory service. |
| 6 | Motor not running after frequency converter running | Not connected motor wire well; error frequency converter parameter setting; bad contact between drive board/control board wire; drive board failure. | Confirm wire between VFD and motor; renew motor or solve mechanical failure; check/reset motor parameters. |
| 7 | Frequency converter frequently reports over current and over voltage | Incorrect motor parameter setting; unsuitable accelerate/moderate time; load wave. | Reset motor parameter or process motor tune; set suitable accelerate/moderate time; seek factory service. |
| 8 | Power on indication | The related apparatus on control board damaged. | Renewal control board. |
7. User Tips
- Temperature Sensor Integration: Based on user inquiries, it is possible to integrate a temperature sensor to control motor speed. This would typically involve configuring an analog input (AI1 or AI2) to read the sensor's output and then mapping this input to the frequency command (P0-03) or using PID control (PA group) to adjust the motor speed based on temperature. Refer to the P4 group for analog input settings and PA group for PID control.
- Voltage Compatibility: Always verify the input and output voltage requirements of your application against the VFD model. Some models are designed for 220V input and 380V output, while others are strictly 380V.
- Parameter Reset: If you encounter unexpected behavior or configuration issues, consider performing a factory parameter reset (P0-29=10000) as a first troubleshooting step, then reconfigure essential parameters.
8. Warranty and Support
8.1 Warranty Description
The product comes with an 18-month free warranty period, starting from the date of manufacture (indicated by the bar code on the appearance). This warranty covers failures or damages under normal use conditions.
A maintenance fee will be charged if:
- Damage is caused by the user's failure to comply with the provisions of this manual.
- Damage is caused by external factors such as fire, flood, or abnormal voltage.
- Damage results from applying the frequency converter to abnormal functions.
Relevant service costs will be calculated according to the manufacturer's standard rates. If a contract exists, it will be handled according to the contract's principles.
8.2 Technical Support
For any questions or technical assistance, please contact customer service. Our professionals are dedicated to providing the best support.