Description
SEW 31C005‑503‑4‑00
Technical Specifications: Rated motor power: 0.55kW Three‑phase input voltage: 380VAC–500VAC Rated output current: 1.6A Maximum output current: 2.4A Control mode: VFC open‑loop flux control Protection class: IP20 Ambient operating temperature: 0℃ to +45℃ Cooling method: Natural air cooling Net weight: 1.1kg
Functional Features: Small footprint for DIN rail installation inside electrical cabinet IP20 protection for cabinet use only Built‑in protection functions including overcurrent, overvoltage, undervoltage, overtemperature, earth fault and short circuit Multi‑channel digital and analog I/O terminals Automatic motor parameter identification Multi‑section speed function Analog speed reference via voltage or current signal Relay output for fault signal
Application Scenarios: Small conveyor belt drive Fan and pump speed regulation Simple packaging auxiliary mechanism Light material handling equipment Small mixing machine
Performance Parameters: Output frequency range: 0Hz to 500Hz Overload capacity: 150% rated current for 60 continuous seconds Speed control accuracy ±0.5% under open‑loop VFC mode Adjustable acceleration and deceleration ramp time
Material Composition: Cold rolled steel and flame‑retardant plastic composite housing Multi‑layer industrial PCB control board IGBT power module NTC temperature sensor Copper power terminals, plastic signal terminals DC bus electrolytic capacitors
Structural Characteristics: Compact vertical DIN rail mounting structure Buckle for DIN rail fixing Front panel LED indicator for running and fault Upper power wiring terminals, lower control signal terminals Integrated heat sink inside the housing
Working Principle: Three‑phase AC input passes rectifier circuit to form DC bus voltage. IGBT power module outputs adjustable three‑phase AC to drive asynchronous motor. VFC open‑loop flux control calculates required output voltage and frequency according to speed setpoint without rotor position feedback. When motor decelerates, regenerative energy releases through external brake resistor if brake chopper is fitted. Fault condition triggers hardware shutdown and fault indication.
Installation Requirements: Vertical installation inside closed electrical cabinet. No inverted installation Keep clearance for heat dissipation Separate power cable and control cable routing Power supply voltage matches nameplate Avoid dusty, humid and corrosive environment PE earth terminal firmly connected
Precautions for Use: Wait at least 5 minutes after power‑off before opening cover for inspection Confirm input voltage before power on Complete motor identification during commissioning Do not connect capacitors on output terminals Clean heat sink regularly
