Selec VFD-S-3 Three Phase AC Drive
Selec VFD-S AC Drive – 1HP (0.75kW), Single Phase 230V | VFD-S-1-010-230V
Compact and robust AC drive with V/F control, 150% overload capacity, PI control, RS485 Modbus, multi-speed operation, dual analog inputs, and built-in braking—ideal for pumps, fans, conveyors, and general automation.
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The Selec VFD-S Series is a compact, durable, and user-friendly AC drive designed for 1-phase 230V motors up to 1 HP. Featuring V/F scalar control, PI regulation, RS485 Modbus, 150% overload capacity, dual analog inputs, programmable digital inputs, and built-in braking, it is ideal for pumps, fans, conveyors, packaging lines, and other general-purpose industrial applications.
Key Features
V/F scalar control with Space Vector PWM (SVPWM)
150% overload capability for 1 minute, 180% (10 sec), 200% (1 sec)
Built-in PI controller for process control
0.1–400 Hz output frequency range
RS485 Modbus RTU communication
Dual analog inputs: 0–10V / 0–20mA / 4–20mA
5 multifunction digital inputs for RUN/STOP/FWD/REV/JOG
Adjustable carrier frequency 2–10 kHz
DC braking, soft start/stop, skip-frequency zones
Removable HMI keypad with LED display
Protection: Over-voltage, Under-voltage, Over-current, Over-temperature, Under-current, Overload, Short-circuit
IP20 enclosure, –10°C to +55°C operation
Technical Specifications
Electrical Ratings
| Parameter | Specification |
|---|---|
| Model | VFD-S-1-010-230V |
| Motor Power | 1 HP / 0.75 kW |
| Input Supply | 1-Phase 230V AC, 50/60 Hz |
| Voltage Tolerance | ±20% (184–276 V) |
| Frequency Tolerance | ±5% (47–63 Hz) |
| Maximum Input Current | 10A |
| Output Current | 5A |
| Output Frequency | 0.1–400 Hz |
| Carrier Frequency | 2–10 kHz |
Control Characteristics
| Feature | Specification |
|---|---|
| Control Mode | V/F Scalar (SVPWM) |
| Frequency Resolution | 0.1 Hz |
| Overload Rating | 150% (1 min), 180% (10 s), 200% (1 s) |
| Accel/Decel Time | 0.1–3600 s (4-step profiles) |
| Skip Frequency | 2 bands (0.1–400 Hz) |
| DC Injection Braking | Up to 150% of rated current |
| V/F Modes | 4 preset + 1 user-defined |
I/O Specifications
| Type | Details |
|---|---|
| Digital Inputs | 5 × DI (PNP/NPN selectable) |
| Analog Inputs | AI1: 0–10V; AI2: 0–10V or 0–20mA/4–20mA |
| Relay Output | 1 NO/NC (250V AC, 5A) |
| Analog Output | 0–10V / 0–20mA |
| Open Collector Output | 24V, 50mA |
| Communication | RS485 Modbus RTU |
Environmental Conditions
| Parameter | Specification |
|---|---|
| Protection Level | IP20 |
| Ambient Temperature | –10°C to +55°C |
| Storage Temp | –20°C to +60°C |
| Humidity | <90% RH (non-condensing) |
| Vibration | <5.9 m/s² (0.6g) |
Applications
Pumps (booster, water circulation, dosing)
Fans, blowers, HVAC units
Conveyors and material handling systems
Packaging machinery
Textile machines
General-purpose small industrial drives
What’s in the Box?
Selec VFD-S Drive Unit
Keypad (detachable)
Mounting hardware
User manual
Warranty card
FAQs
Q1. Does the VFD-S support 4–20 mA control?
Yes, AI2 supports both 0–20 mA and 4–20 mA modes.
Q2. Is RS485 communication available?
Yes, the drive supports Modbus RTU via RS485+. RS485–.
Q3. What overload protection is provided?
150% (1 min), 180% (10 s), and 200% (1 s).
Q4. How many digital inputs are available?
Five multifunction DI terminals (X1–X5).
Q5. Is a braking resistor required?
The drive includes a built-in braking unit; a resistor may be added for higher torque.
Q6. Does it support JOG and multi-speed modes?
Yes—JOG, UP/DOWN, 8-step speed selection.