Model Code Explanation

• 31C: MOVITRAC 31C series, compact 4‑quadrant drive

• 150: Rated power 18.5 kW, rated output current 33 A

• 503: 3‑phase 380–500 V AC input, no built‑in EMC filter

• 4: 4‑quadrant operation with brake chopper / energy regeneration

• 00: Standard firmware, no STO, no fieldbus module

Technical Specifications

Input

• Rated voltage: 3‑phase AC 380–500 V (±10%)

• Frequency: 50 / 60 Hz (±10%)

• Rated input current: Approx. 28 A @ 400 V

Output

• Rated power: 18.5 kW (25 HP)

• Rated output current: 33 A @ 400 V

• Apparent power: 24 kVA

• Frequency range: 0–400 Hz

• Overload capacity: 150% rated current for 60 seconds; 180% for 2 seconds

Control & Interfaces

• Control modes: V/F open‑loop control, sensorless vector control (SVC)

• Digital I/O: 7 digital inputs, 2 digital outputs, 1 relay output

• Analog I/O: 2 analog inputs, 2 analog outputs

• Safety function: No STO

• Protection: Overcurrent, overvoltage, undervoltage, overtemperature, earth fault, short circuit

Mechanical & Environmental

• Protection class: IP20

• Operating temperature: 0 °C to +45 °C (derating above 40 °C)

• Storage temperature: -25 °C to +70 °C

• Dimensions (W×H×D): Approx. 240 × 300 × 325 mm

• Weight: Approx. 11.5 kg

Key Features

1. 4‑quadrant energy regeneration

   Recycles braking energy to the grid, eliminates external brake resistors and reduces energy costs.

2. High‑performance motor control

   Supports V/F and sensorless vector control for stable speed and torque.

3. Compact and robust

   IP20 design for easy installation in standard control cabinets.

4. Comprehensive protection

   Ensures long‑term stable operation in harsh industrial environments.

Typical Applications

Related Models

• 31C150-503-4-05: 18.5 kW, 4‑quadrant regenerative inverter with STO, no fieldbus

• 31C150-503-4-20: 18.5 kW, 4‑quadrant regenerative inverter with PROFIBUS‑DP, no STO

• 31C150-503-4-25: 18.5 kW, 4‑quadrant regenerative inverter with PROFIBUS‑DP and STO