Technical Specifications Model: DCF503‑0050 Drive Compatibility: DCS500B, DCS800 DC drive series Input Power: Single‑phase AC power supply Nominal Output DC Excitation Current: 50 A Peak Output Current: 56 A Control Interface: Control signal interface matched with SDCS‑CON‑2 drive control board Cooling Mode: Natural convection cooling Mounting Type: Cabinet panel mounting or cabinet base mounting Operating Temperature: ‑20 ℃ to +70 ℃ Storage Temperature: ‑40 ℃ to +85 ℃ Relative Humidity: 5‑95 %, non‑condensing Protection Class: IP20 Certifications: CE
Functional Features Single‑phase thyristor half‑bridge power circuit outputs adjustable DC excitation current for DC motor field winding. Built‑in closed‑loop excitation current regulation function maintains stable excitation current under power‑supply fluctuation condition. Complete over‑current, over‑temperature, over‑voltage and field‑winding open‑circuit protection function. Receives excitation current setpoint command from main drive control board, executes real‑time output adjustment. Hardware fault relay output provides fault alarm signal to upper‑level control system. Compact cabinet‑mount structure supports new drive project installation and old drive system retrofit replacement.
Application Scenarios DCS500B / DCS800 DC drive system external field exciter spare‑part replacement. Metallurgical rolling mill, paper‑making winding machine, crane large‑power DC motor excitation power supply unit. Industrial DC drive renovation project requiring independent external excitation power source.
Performance Parameters Current regulation accuracy: ≤ ±2 % of nominal output current MTBF: 186000 hours Shock and Vibration: Complies with IEC 60068‑2‑6 power electronic equipment standard.
Installation Requirements Fix DCF503‑0050 unit on control cabinet mounting base according to mounting dimension drawing. Connect single‑phase AC input power cable to high‑power input terminals, connect DC output terminals to DC motor field winding cable. Connect control signal wiring between DCF503‑0050 signal terminals and DCS drive main control board terminals. Complete protective earthing connection strictly following drive system grounding specification.
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