FST-503 Series Single-Phase 220V General-Purpose Inverter (0.2kW - 1.1kW)
FST-503 series frequency converters are instrument mounted, with a good feel for the potentiometer knob and convenient speed regulation. Low frequency torque, optimized PWM, complete protection functions, and fast response.
Power range
0.2Kw~1.1Kw
Input voltage
220V 1 phase to 3 phase
Key Features
Convenient Speed Regulation
Panel-mounted speed potentiometer with excellent tactile feedback for intuitive operation
Optimized Cooling
Forced air cooling with built-in cooling fan; optimized thermal design for reliable operation
Strong EMC Performance
Excellent electromagnetic compatibility ensures stable operation in complex environments
Complete Parameters
Full parameter configuration with multi-function display for real-time monitoring
Panel-Mount Installation
Instrument-style panel mounting; supports external keypad for flexible installation
High Low-Frequency Torque
150% starting torque with optimized PWM algorithm for heavy-load startup
Comprehensive Protection
Full protection functions including overcurrent, overvoltage, undervoltage, overheating, and overload
Fast Response
Rapid dynamic response ensures precise speed control under varying load conditions
- Output frequency range: 0 - 630Hz (max)
- Panel-integrated speed potentiometer for convenient adjustment
- Built-in PID regulator for closed-loop process control
- Multi-function open-collector outputs (Y1, Y2)
- Analog input support: 0-10V DC (VR terminal)
- Customizable V/F curve for special applications
- Shift key for real-time parameter monitoring during operation
- New generation PIM module with comprehensive protection
- Built-in RS485 communication port (Modbus RTU protocol)
- 7-segment multi-speed operation and simple PLC function
| Parameter | Specification |
|---|---|
| Input Voltage | Single-Phase AC 220V (Range: -15% ~ +20%) |
| Output Voltage | Three-Phase AC 220V |
| Power Range | 0.2kW / 0.4kW / 0.75kW / 1.1kW |
| Output Frequency | 0.00Hz ~ 630.00Hz |
| Carrier Frequency | 0.5kHz ~ 16.0kHz (temperature-adaptive) |
| Control Method | V/F Control |
| Starting Torque | 150% (G-Type Machine) |
| Speed Range | 1:50 |
| Speed Accuracy | ±1% |
| Overload Capacity | 150% rated current for 60s |
| Acceleration/Deceleration Time | 0.00s ~ 300.00min (Two sets) |
| Analog Input | DC 0~10V (VR Terminal) / Panel Potentiometer |
| Digital Input | 3 Multi-Function Terminals (S1/S2/S3) |
| Digital Output | 2 Open-Collector Outputs (Y1/Y2), 0~500mA |
| Communication Interface | RS485 (Modbus RTU Protocol) |
| Built-in Functions | PID Control, 7-Segment Multi-Speed, Simple PLC, Swing Frequency, Length Control, Counter |
| Protection Functions | Overcurrent, Overvoltage, Undervoltage, Overheating, Overload, Phase Loss, Short Circuit, Ground Fault |
| Ambient Temperature | -10°C ~ +40°C (Derate above 40°C) |
| Humidity | <95% RH (Non-condensing) |
| Installation | Panel-Mount (Instrument Style) |
| Model | Power | Input Current | Output Current | Motor Capacity |
|---|---|---|---|---|
| FST-503-S0R2GB | 0.2kW | 3.2A | 1.6A | 0.2kW |
| FST-503-S0R4GB | 0.4kW | 5.4A | 2.3A | 0.4kW |
| FST-503-S0R7GB | 0.75kW | 8.2A | 3.7A | 0.75kW |
| FST-503-S1R1GB | 1.1kW | 14.0A | 5.5A | 1.1kW |
- FST — Company Code
- 503 — Series Code
- S — Single-Phase 220V Input
- 0R7 — Power Code (0R7 = 0.75kW)
- GB — G-Type Machine (Heavy Duty)
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