1. Model Code Meaning

• 31C: MOVITRAC 31C compact series

• 022: 2.2 kW rated output power

• 503: 380–500 V AC, 3‑phase

• 4: 3‑phase input, built‑in brake chopper (4‑quadrant)

• 05: Standard configuration + integrated FBG31C keypad (RS485 Modbus, no fieldbus card)

2. Electrical Ratings

• Rated Output Power: 2.2 kW

• Input Voltage: 3‑phase AC 380–500 V, 50/60 Hz

• Rated Input Current: 5.9 A

• Rated Continuous Output Current: 5.9 A

• Output Voltage: 0–480 V 3‑phase AC

• Output Frequency: 0–400 Hz

• Control Modes: V/F open‑loop / Sensorless vector (SLV)

• Overload: 150% / 60 s

• Switching Frequency: 4 / 8 / 12 / 16 kHz (selectable)

• Safety: STO (Safe Torque Off) standard

3. Mechanical & Environmental

• Protection Class: IP20

• Cooling: Natural convection (no fan)

• Operating Temp: 0 °C to +45 °C (full load)

• Storage Temp: −25 °C to +70 °C

• Humidity: 5–95 %, non‑condensing

• Mounting: Vertical wall‑mount

• Altitude: ≤1000 m (no derating); 1%/100 m above 1000 m

• Weight: approx. 2.8 kg

4. Interfaces (Standard)

• Integrated FBG31C keypad (for local setup/operation)

• RS485: Modbus RTU (onboard)

• Analog Inputs: 0–10 V DC / 0–20 mA (2 inputs)

• Digital Inputs: 6 × 24 V DC programmable

• Relay Outputs: 2 × programmable (NO/NC)

• PTC motor thermal input

• Brake resistor connection terminals

• Multi‑speed (fixed frequency) terminals

5. Main Functions

• Acc/Dec time: 0.1–600 s

• DC injection braking + dynamic braking (fast stop)

• Energy‑saving mode

• Control sources: keypad / terminals / Modbus

• Slip compensation (stable speed under load)

• Soft start/stop (reduce inrush & mechanical stress)

• Built‑in PID (constant speed/pressure/flow)

• Parameter save/copy/restore

• Good low‑speed torque

6. Protection Features

• Overcurrent / short‑circuit / earth fault

• Overvoltage / undervoltage

• Input phase loss

• Inverter overtemperature

• Electronic thermal motor protection

• Stall prevention

• ESD protection (control terminals)

• Hardware STO (PL d, SIL2)

7. Installation & Wiring

• Isolate power before wiring/service

• Separate power and control cables (EMI reduction)

• Reliable PE grounding required

• Keep clearance for cooling

• Avoid dust, humidity, oil, corrosive environments

• Use shielded motor cables

8. Commissioning

1. Verify wiring & voltage match rating

2. Enter motor data (V, I, f, n)

3. Select control mode

4. Set acc/dec & frequency limits

5. No‑load test run

6. Load operation

9. Maintenance

• Clean dust every 3–6 months

• Check terminal tightness periodically

• Monitor current & temperature during operation

• Service by qualified personnel only

10. Applications

• 2.2 kW 3‑phase motor speed control

• Conveyors, packaging, textile machinery

• Fans, pumps (energy saving)

• General light‑industrial variable‑speed drives

• Systems with Modbus RTU & local keypad operation

11. Compliance

• CE (Low Voltage)

• EN 61800‑3 (EMC)

• RoHS

• STO: PL d, SIL2