Description
SEW 31C055‑503‑4‑00
Technical Specifications: Rated motor power:5.5kW Three‑phase input voltage:380VAC–500VAC Rated output current:12A Maximum output current:18A Control mode:VFC open‑loop flux control Protection class:IP20 Ambient operating temperature:0℃ to +45℃ Cooling method:Forced air cooling Net weight:4.7kg
Functional Features: DIN rail vertical installation inside electrical cabinet IP20 protection for cabinet use only Integrated 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 selection Analog reference via voltage or current signal Relay fault output contact
Application Scenarios: Medium‑duty conveyor belt drive Water pump and fan speed adjustment Packaging machine auxiliary transmission Woodworking equipment feed drive Material lifting auxiliary mechanism
Performance Parameters: Output frequency range:0Hz–500Hz Overload capacity:150% rated current for 60 continuous seconds Open‑loop VFC speed control accuracy ±0.5% Adjustable acceleration and deceleration ramp
Material Composition: Cold rolled steel sheet housing with powder coating Multi‑layer industrial PCB control board High‑power IGBT power module NTC temperature sensor Copper power terminals, plastic signal terminals Large DC bus electrolytic capacitors
Structural Characteristics: Vertical DIN rail mounting structure with rear DIN buckle and screw fixing holes Front LED running and fault indicator Upper power wiring terminals, lower control signal terminals Built‑in cooling fan and metal heat sink
Working Principle: Three‑phase AC input passes rectifier circuit and converts to DC bus voltage. IGBT module outputs variable voltage variable frequency three‑phase AC to drive asynchronous motor. VFC open‑loop flux control calculates output voltage and frequency according to speed setpoint without rotor position feedback. Regenerative energy during motor deceleration releases to external brake resistor through built‑in brake chopper. Fault condition triggers hardware shutdown and fault alarm.
Installation Requirements: Vertical installation inside closed electrical cabinet, inverted installation forbidden Reserve cooling clearance, do not block fan airflow Separate power cable and control cable routing Input power voltage matches nameplate Avoid dust, moisture and corrosive gas PE earth connection must be tight and reliable
Precautions for Use: Wait at least 10 minutes after power‑off for capacitor discharge before opening cover for maintenance Check input voltage before power‑on Complete motor identification during commissioning No parallel capacitors allowed on output terminals Clean fan and heat sink dust periodically Short circuit of brake terminals is prohibited
