Model Code Explanation

• 31C: MOVITRAC 31C series, compact regenerative drive

• 075: Rated power 11 kW, rated output current 16 A

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

• 4: 4-quadrant operation with regenerative braking and grid energy feedback

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

Technical Specifications

Input

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

• Input frequency: 50 / 60 Hz (±10%)

• Rated input current: 14.5 A @ 400 V

Output

• Rated power: 11 kW (15 HP)

• Rated output current: 16 A @ 400 V

• Apparent power: 11 kVA

• Frequency range: 0–400 Hz

• Overload capacity: 125% rated current for continuous operation; 150% rated current for 60 seconds

Control & Interfaces

• Control modes: V/F open-loop control, sensorless vector control (VFC)

• Digital I/O: 6 digital inputs, 2 digital outputs, 1 relay output

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

• Safety function: No STO

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

Mechanical & Environmental Data

• Protection class: IP20

• Operating temperature: 0 °C to +45 °C. Power derating is required above 40 °C.

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

• Dimensions (W×H×D): approx. 200 × 260 × 285 mm

• Weight: approx. 7.8 kg

Key Features

1. 4-quadrant energy regeneration

   Braking energy is recycled to the grid, eliminating the need for external brake resistors and cutting operating costs.

2. Reliable motor control

   Supports V/F and sensorless vector control to deliver stable speed and torque output.

3. Robust structure

   Compact IP20 design for easy installation in standard control cabinets.

4. Full protection system

   Multiple protective functions ensure stable and long-term operation in industrial environments.

Typical Applications

Related Models

• 31C075-503-4-05: 11 kW, 4-quadrant regenerative inverter with STO, no fieldbus

• 31C075-503-4-20: 11 kW, 4-quadrant regenerative inverter with PROFIBUS-DP, no STO

• 31C075-503-4-25: 11 kW, 4-quadrant regenerative inverter with PROFIBUS-DP and STO