Model Code Explanation

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

• 007: Rated power 0.75 kW, rated output current 2.4 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 fieldbus module and no STO safety function

Technical Specifications

Input

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

• Input frequency: 50 / 60 Hz (±10%)

• Rated input current: 2.0 A

Output

• Rated power: 0.75 kW

• Rated output current: 2.4 A

• Apparent power: 1.7 kVA

• Frequency range: 0–400 Hz

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

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

• 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 when temperature exceeds 40 °C.

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

• Dimensions (W×H×D): approx. 127 × 165 × 178 mm

• Weight: approx. 2.1 kg

Key Features

1. 4-quadrant energy regeneration

   Braking energy is fed back to the power grid. External brake resistors are not needed, which simplifies system layout and reduces operational costs.
2. Compact design

   Small size saves cabinet space and allows easy installation.
3. Stable control performance

   Equipped with V/F and sensorless vector control modes, it delivers steady torque and speed regulation for various light industrial loads.
4. Comprehensive protection

   Multiple protection functions ensure reliable long-term operation in industrial environments.

Typical Applications

Related Models

• 31C005-503-4-00: 0.55 kW, 4-quadrant regenerative inverter

• 31C007-503-4-20: 0.75 kW, 4-quadrant regenerative inverter with PROFIBUS-DP

• 31C011-503-4-00: 1.1 kW, 4-quadrant regenerative inverter