31C015-503-4-00
May 18, 2026

31C015-503-4-00

Brand: SEW-EURODRIVE Model: 31C015-503-4-00 Series: MOVITRAC 31C Compact Inverter Rated Power: 1.5 kW Voltage Class: 3-phase 380~500 V AC Version: 00 = Standard configuration with RS485 communication

Description

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1. Model Code Definition

31C = MOVITRAC 31C compact light-duty series
015 = Rated output power 1.5 kW
503 = 380~500 V AC voltage grade
4 = Three-phase AC input with built-in brake chopper
00 = Standard version, RS485 communication, without built-in keypad

2. Electrical Parameters

  • Rated Output Power: 1.5 kW

  • Input Voltage: 3-phase AC 380~500 V

  • Rated Frequency: 50 Hz / 60 Hz

  • Rated Continuous Output Current: 4.0 A

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

  • Output Frequency Range: 0~400 Hz

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

  • Overload Capacity: 150% rated current for 60 seconds

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

  • Standard equipped with STO Safe Torque Off function

3. Physical & Environmental Parameters

  • Protection Class: IP20

  • Cooling Method: Natural air cooling without fan

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

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

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

  • Installation Method: Vertical wall mounting

  • Max Working Altitude: ≤1000 meters without power reduction

  • Weight: Approximately 2.5 kg

4. Standard Interfaces

  • Built-in RS485 interface, support Modbus RTU protocol

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

  • 6 groups of programmable 24V DC digital input terminals

  • 2 groups of programmable relay output terminals

  • PTC motor over-temperature protection input port

  • External brake resistor connection terminal

  • Multi-speed fixed frequency control terminals

  • Support external FBG31C operation panel for parameter setting

5. Main Functions

  • Adjustable acceleration and deceleration time: 0.1s ~ 600s

  • Integrated DC braking and dynamic braking for fast stop

  • Intelligent energy saving operating mode

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

  • Slip compensation to stabilize running speed under load

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

  • Built-in PID closed-loop control for constant speed and constant pressure

  • Support parameter saving, copying and one-click recovery

  • Stable high torque output at low speed

6. Complete Protection Functions

  • Instantaneous overcurrent and thermal overload protection

  • Over voltage and under voltage protection

  • Three-phase input phase loss detection protection

  • Inverter internal overheating protection

  • Electronic thermal motor overload protection

  • Output short circuit protection

  • Motor earth fault protection

  • Running anti-stall protection

  • ESD anti-static protection for control terminals

  • Hardware STO safety torque off protection

7. Installation & Wiring Rules

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

  2. Separate power cables and control cables to avoid electromagnetic 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 places

  6. Adopt shielded special motor cables for output connection

8. Commissioning Steps

  1. Check all wiring to avoid wrong connection and short circuit risks

  2. Confirm input power voltage matches inverter rated voltage

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

  4. Select suitable control mode according to actual demands

  5. Set reasonable acceleration/deceleration time and frequency limit

  6. Conduct no-load test run and check motor running status

  7. Put into formal load operation after stable operation

9. Daily Maintenance

  • Clean surface dust regularly every 3 to 6 months

  • Check tightness of all wiring terminals periodically

  • Observe real-time running current and temperature during operation

  • All inspection and maintenance shall be operated by qualified electricians

10. Application Scope

1.5kW three-phase motor speed regulation
Light industrial automation equipment
Small fan and water pump energy saving speed control
Packaging machinery, textile equipment and conveying machinery
General low-power variable frequency drive occasions
Equipment supporting Modbus RTU remote communication control

11. Compliance Standards

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


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