VFD 300 S2 Series – Single Phase 220V Input / Three Phase 220V Output
The VFD 300 S2 Series converts single-phase 220V input to three-phase 220V output, providing efficient motor control for applications requiring three-phase power from a single-phase supply.
Key Features
- Output Frequency: 0-500Hz
- Overload Capacity: 150% rated current for 1 minute, 180% for 3 seconds
- Control Method: Optimized SVPWM control
- Control Mode: Sensorless vector control
- Frequency Resolution: Digital 0.01Hz; Analog max frequency ×0.025%
- Automatic torque boost: 0.1%-30.0%
- Built-in PID closed-loop control
- Multi-speed operation via built-in PLC
- RS485 communication
- 5 programmable digital inputs, 2 analog inputs
- 2 relay outputs
- Full protection suite included
Model Specifications
| Model | Rated Current | Dimensions (H×W×D mm) | Shell Type |
|---|---|---|---|
| 300N-0.75GB-S2 | Input 8.2A / Output 4A | 165×98×128 | Plastic (S) |
| 300N-1.5GB-S2 | Input 14A / Output 7A | 165×98×128 | Plastic (S) |
| 300N-2.2GB-S2 | Input 23A / Output 9.6A | 165×98×128 | Plastic (S) |
| 300N-003GB-S2 | Input 27A / Output 12A | 187×100×137.5 | Plastic (S) |
| 300N-004GB-S2 | Input 39.7A / Output 15A | 187×100×137.5 | Plastic (S) |
| 300N-5.5GB-S2 | Input 41.3A / Output 13A | 220×130×177.5 | Plastic (S) |
Electrical Specifications
| Power | Input Voltage | Output Voltage | Output Frequency | Net Weight |
|---|---|---|---|---|
| 0.75-2.2kW | 3PH 220V 50/60Hz | 3PH 0-220V | 0-500Hz | 1.24kg |
| 3kW | 3PH 220V 50/60Hz | 3PH 0-220V | 0-500Hz | 1.8kg |
| 4-5.5kW | 3PH 220V 50/60Hz | 3PH 0-220V | 0-500Hz | 2.85kg |
Why Choose VFD300 S2 Series?
Run 3-Phase Motors on Single-Phase Power
Convert 220V single-phase to 220V three-phase — unlock industrial motor performance in residential or small workshop environments.
Compact & Easy to Install
Wall-mount design fits in tight spaces. No extra cabinets or complex wiring required.
20-30% Energy Savings
Match motor speed to actual load demand. Ideal for small pumps, fans, and light industrial equipment.
Soft Start Protection
Eliminate inrush current spikes and mechanical shock. Protect motors and reduce maintenance frequency.
Quick Selection Guide — S2 Series
| Your Application | Recommended Model | Key Tip |
|---|---|---|
| Small Water Pump | P Type | Use built-in PID for constant pressure |
| Small Fan / Blower | P Type | Variable torque mode saves 20-30% energy |
| Small Conveyor / Machine Tool | G Type | Size up 1 level for starting torque |
| General Purpose | G Type | Default choice for mixed loads |
Quick Specs at a Glance
| Input Voltage | 1PH AC 200V ~ 240V |
| Output Voltage | 3PH AC 0 ~ 240V |
| Power Range | 0.75kW – 5.5kW |
| Output Frequency | 0 – 600Hz |
| Control Mode | Sensorless Vector / V/F |
| Overload Capacity | G: 150%/60s, P: 120%/60s |
| Best For | Single-phase homes/workshops needing 3-phase motor control |
Complete Technical Specifications
| Parameter | Specification |
|---|---|
| Output Frequency | 0-500Hz |
| Carrier Frequency | 1.0-15.0kHz, automatically adjusts based on temperature and load |
| Control Method | Optimized space voltage vector SVPWM control |
| Control Mode | Sensorless vector control with optimal low-frequency dead zone compensation |
| V/F Control | Linear, multi-point, square root (selectable) |
| Frequency Resolution | Digital setting: 0.01Hz; Analog setting: max frequency × 0.025% |
| Starting Frequency | 0.0-10.0Hz |
| Starting Torque | 0.5Hz / 180% (Sensorless Vector Control); 1Hz / 180% (V/F) |
| Torque Boost | Automatic torque boost; Manual torque boost 0.1%-30.0% |
| Speed Control Accuracy | ±0.5% of maximum speed (Sensorless Vector Control) |
| Speed Adjustment Range | 1:100 (Sensorless Vector Control) |
| Overload Capacity (G-type) | 150% rated current for 1 minute, 180% rated current for 3 seconds |
| Overload Capacity (P-type) | 120% rated current for 60 seconds, 150% rated current for 10 seconds |
| Acceleration/Deceleration | Linear or S-curve, 4 sets of accel/decel time (0.1-3600s) |
| DC Braking | DC braking at start and stop |
| Jog Operation | Jog frequency: 0.0Hz to max frequency; Jog accel/decel time: 0.1-3600s |
| Built-in PID | Closed-loop control for pressure, flow, temperature regulation |
| Multi-speed Operation | Up to 16-speed via built-in PLC or control terminals |
| Run Command Channel | Control panel, control terminals, RS485 communication |
| Frequency Setting | Digital keypad, analog input (AI1/AI2), RS485, multi-speed, simple PLC, PID |
| Digital Input | 5 programmable digital inputs (DI1-DI5), DI5 supports 20kHz high-speed pulse input |
| Analog Input | 2 channels (AI1, AI2): 0-20mA / 0-10V selectable |
| Analog Output | 2 channels (AO1, AO2): 0-20mA or 0-10V selectable |
| Relay Output | 2 relays: NO/NC, rated AC250V 3A / DC30V 1A |
| Communication | RS485 Modbus RTU (standard) |
| Protection | Overcurrent, overvoltage, undervoltage, overheat, overload, input/output phase loss, motor overheat (PTC), ground fault |
| Display | LED display showing set frequency, output frequency, output voltage, output current, etc. |
| Operating Temperature | -10°C to +50°C (derating above 40°C) |
| Storage Temperature | -20°C to +60°C |
| Humidity | ≤95% RH, non-condensing |
| Altitude | ≤1000m (derate 1% per 100m above 1000m) |
| Protection Degree | IP20 (standard); IP54 available on request |
| Installation | Wall mount or flange mount |
| Cooling | Forced air cooling |
| Quality Assurance | 100% full-load aging test before shipment |
Model Naming Convention
SHZK VFD300 models follow a standardized naming system for easy identification:
XXX – 055 G B – T4 – L
| Position | Code | Description |
|---|---|---|
| Series | 300 | VFD300 Series |
| Power Rating | 007 | 0.75 kW |
| 015 | 1.5 kW | |
| 055 | 5.5 kW | |
| 720 | 72 kW | |
| 800 | 80 kW | |
| Motor Type | G | General purpose (standard industrial) |
| P | Fan & Pump type (light-duty, 120% overload) | |
| PV | Solar/PV dedicated (MPPT/CVT solar tracking) | |
| Braking Unit | B | With built-in braking unit |
| (blank) | Without braking unit | |
| Voltage Class | T4 | 3PH AC 380-480V Input / 3PH 0-480V Output |
| T2 | 3PH AC 200-240V Input / 3PH 0-240V Output | |
| S2 | 1PH AC 200-240V Input / 3PH 0-240V Output | |
| S3 | 1PH AC 200-240V Input / 3PH 0-400V Output | |
| H2 | 1PH AC 200-240V Input / 1PH 0-240V Output | |
| Reactor Option | (blank) | No reactor |
| -L | With AC output reactor | |
| -T | With DC reactor |
Available Configurations
| Configuration | Model Suffix | Best For |
|---|---|---|
| General Industrial | G | Conveyors, CNC, mixers, general machinery |
| Fan & Pump (Energy Saving) | P | Centrifugal pumps, HVAC fans, blowers (lower overload, optimized for variable torque loads) |
| Solar/PV Dedicated | PV | Solar water pumping, agricultural irrigation, off-grid water supply (MPPT + CVT dual-mode solar tracking) |
Optional Accessories
- Braking Unit (B): Built-in braking resistor for applications requiring fast deceleration (cranes, hoists, elevators)
- AC Output Reactor (-L): Recommended for long motor cable runs (>50m) or multiple motors on one VFD
- DC Reactor (-T): Improves power factor and reduces harmonic distortion for large installations
- Communication Cards: Profibus-DP and Profinet modules available on request for SCADA integration
Applications
Conveyor systems, fans, pumps, machine tools, and industrial equipment requiring three-phase power from single-phase supply.
OEM & ODM available. Contact us for pricing and technical support.
Control Circuit Wiring Diagrams
The following diagrams show the control circuit terminal layout and wiring for each main board type used in the 300 Series.
Main Circuit Terminal Layout
Main Circuit Terminal Layout (R/L1, S/L2, T — PP, PB — U, V, W — G, E)
A-Type Main Board Wiring Diagram
Wiring Notes
- Analog voltage signals require shielded cables; wiring distance should not exceed 20m.
- In severe interference environments, equip analog signal source side with filter capacitor or ferrite core.
- Terminal assignments may vary by model — refer to actual product labeling.