ABB DCS550 DC Drive Modules – DCS550-S02-0300-05-00-00

Technical Dossier

Product Details And Specifications

ABB DCS550 Series Technical Notes

The ABB DCS550 is a fully digital DC drive platform engineered for demanding industrial applications requiring precise armature current control and four-quadrant operation. Deployed extensively in chemical processing plants, nuclear power auxiliary systems, oil refineries, pulp and paper mills, and steel rolling lines, the DCS550 series occupies a critical position in global heavy industry infrastructure. Its modular architecture supports current ratings from 25 A to 5200 A, covering a voltage range of 400 V to 525 V AC supply, making it one of the most scalable DC drive families in the ABB portfolio. The DCS550 is the direct successor to the DCS400 and DCS500 series and is fully backward-compatible with legacy DCS500B panel wiring in most configurations, which has made it the default retrofit solution for aging DC drive installations worldwide.

DCS550 Full Catalog & Functionalities (SKU List)

The following SKUs represent the verified production range of the ABB DCS550 series, organized by functional category. Each entry reflects a distinct hardware configuration defined by current rating, supply voltage, field excitation type, and enclosure class.

Standard Air-Cooled Drives (S01 — Single-Phase Field Supply)

• DCS550-S01-0025-05-00-00: 25 A armature, 500 V AC supply, single-phase field, IP00 chassis
• DCS550-S01-0050-05-00-00: 50 A armature, 500 V AC supply, single-phase field, IP00 chassis
• DCS550-S01-0075-05-00-00: 75 A armature, 500 V AC supply, single-phase field, IP00 chassis
• DCS550-S01-0100-05-00-00: 100 A armature, 500 V AC supply, single-phase field, IP00 chassis
• DCS550-S01-0140-05-00-00: 140 A armature, 500 V AC supply, single-phase field, IP00 chassis
• DCS550-S01-0180-05-00-00: 180 A armature, 500 V AC supply, single-phase field, IP00 chassis

Standard Air-Cooled Drives (S02 — Three-Phase Field Supply)

• DCS550-S02-0210-05-00-00: 210 A armature, 500 V AC supply, three-phase field, IP00 chassis
• DCS550-S02-0261-05-00-00: 261 A armature, 500 V AC supply, three-phase field, IP00 chassis
• DCS550-S02-0300-05-00-00: 300 A armature, 500 V AC supply, three-phase field excitation, IP00 chassis — the current page SKU; commonly used in extruder and winder drive applications
• DCS550-S02-0400-05-00-00: 400 A armature, 500 V AC supply, three-phase field, IP00 chassis
• DCS550-S02-0450-05-00-00: 450 A armature, 500 V AC supply, three-phase field, IP00 chassis
• DCS550-S02-0520-05-00-00: 520 A armature, 500 V AC supply, three-phase field, IP00 chassis
• DCS550-S02-0680-05-00-00: 680 A armature, 500 V AC supply, three-phase field, IP00 chassis
• DCS550-S02-0820-05-00-00: 820 A armature, 500 V AC supply, three-phase field, IP00 chassis
• DCS550-S02-1000-05-00-00: 1000 A armature, 500 V AC supply, three-phase field, IP00 chassis
• DCS550-S02-1200-05-00-00: 1200 A armature, 500 V AC supply, three-phase field, IP00 chassis
• DCS550-S02-2000-05-00-00: 2000 A armature, 500 V AC supply, three-phase field, high-current parallel thyristor configuration

Control & Auxiliary Boards (Spare Parts)

• SDCS-CON-F: Main control board for all DCS550 units; houses DSP, firmware FLASH, and encoder interface
• SDCS-POW-4: Power supply board; provides internal 24 VDC logic rail and gate drive supply
• SDCS-IOB-3: Standard I/O expansion board; adds analog and digital I/O channels
• SDCS-FEX-2: Field excitation board for three-phase field supply configurations (S02 variants)