31C007-503-4-00
May 18, 2026

31C007-503-4-00

Brand: SEW-EURODRIVE Model: 31C007-503-4-00 Series: MOVITRAC 31C Compact Inverter Rated Power: 0.75 kW Voltage Grade: 400V Three-phase

Description

1. Model Code Definition

31C = MOVITRAC 31C compact light-duty series
007 = Rated output power 0.75 kW
503 = 380~480V AC voltage class
4 = Three-phase AC input
00 = Standard configuration with RS485 communication

2. Electrical Specifications

  • Rated Output Power: 0.75 kW

  • Input Voltage: 3-phase AC 380~480 V

  • Rated Frequency: 50 Hz / 60 Hz

  • Rated Continuous Output Current: 2.4 A

  • Output Voltage Range: 0~480 V three-phase AC

  • Output Frequency Range: 0~400 Hz

  • Control Mode: V/F open-loop / Sensorless vector control

  • Overload Capacity: 150% rated current for 60 seconds

  • Switching Frequency: 4kHz, 8kHz, 12kHz, 16kHz optional

  • Standard built-in STO Safe Torque Off function

3. Environmental & Physical Parameters

  • Protection Class: IP20

  • Cooling Method: Natural air cooling without fan

  • Operating Temperature: 0°C ~ +45°C full load operation

  • Storage Temperature: -25°C ~ +70°C

  • Working Humidity: 5%~95%, non-condensing

  • Installation Way: Vertical wall mounting

  • Max Working Altitude: Below 1000 meters without power reduction

  • Applicable Environment: Light industrial working occasions

4. Standard Communication & Terminals

  • Onboard RS485 interface, support Modbus RTU protocol

  • Analog signal input: 0-10V DC / 0-20mA dual mode

  • 6 groups 24V DC programmable digital input terminals

  • 2 groups programmable relay output terminals

  • PTC motor over-temperature protection input port

  • External brake resistor connecting terminal

  • Multi-speed fixed frequency control terminals

  • Optional external operation panel for parameter setting

5. Main Operating Functions

  • Acceleration and deceleration time adjustable from 0.1s to 600s

  • Built-in DC braking and dynamic braking for fast stop

  • Intelligent energy saving running mode

  • Three control modes: local panel, external terminal, remote communication

  • Slip compensation function to stabilize running speed

  • Soft start and soft stop to reduce starting current and mechanical impact

  • Integrated PID closed-loop control for constant speed and constant pressure

  • Support parameter saving, copying and one-click restoration

  • Excellent low speed high torque output performance

6. Complete Protection Functions

  • Instantaneous overcurrent and thermal overload protection

  • Over voltage and under voltage fault protection

  • Three-phase input phase loss detection protection

  • Inverter internal overheating protection

  • Electronic thermal motor overload protection

  • Output circuit short circuit protection

  • Motor ground fault protection

  • Running anti-stall protection

  • Control terminal static electricity protection

  • Hardware STO safety torque off protection

7. Installation & Wiring Rules

  1. Cut off all power supply before wiring, debugging and maintenance

  2. Separate power lines and control signal lines to avoid interference

  3. Ensure reliable connection of PE grounding terminal

  4. Reserve enough space around for heat dissipation

  5. Do not install in dusty, humid, oily and corrosive environment

  6. It is recommended to use shielded special motor cables for output wiring

8. Basic Commissioning Steps

  1. Check all wiring to confirm no wrong connection and short circuit risk

  2. Confirm on-site input voltage matches inverter rated voltage

  3. Set motor rated voltage, current, frequency and speed parameters correctly

  4. Select proper control mode according to actual use requirements

  5. Set reasonable acceleration/deceleration time and frequency limit value

  6. Carry out no-load test run first to check motor running direction and sound

  7. Put into formal load operation after stable no-load operation

9. Daily Maintenance Instructions

  • Clean surface dust regularly every three to six months

  • Check the tightness of all wiring terminals periodically

  • Observe real-time operating current and temperature during operation

  • All fault inspection and maintenance work must be completed by qualified electricians

10. Application Range

Small power three-phase motor speed regulation
Light industrial automation supporting equipment
Small fan and water pump energy saving speed control
Packaging machinery, textile auxiliary equipment
Mini conveying equipment and logistics machinery
Various low-power variable frequency drive systems

11. Industry Compliance Standards

CE low voltage safety certification
Meet EN61800-3 EMC electromagnetic compatibility standard
Comply with RoHS environmental protection material standard
STO safety function meets PL d and SIL2 safety specification


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