Overview
manual
Control Architecture
Service Compatibility
Features:
- 80C186 processor and DC94L01 ASIC
- Flash PROM system and application memory
- Capacitor-backed static RAM for operating records
- Measurement, firing-pulse, and converter-control functions
- Hardware and software watchdog supervision
- RS485 links for panel and field-exciter communication
SDCS-CON-1 is the central control board for ABB DCS 500 and DCP 500 converter systems. It executes the system software and application program while coordinating measurement and control tasks.
The board manages A/D and D/A control, digital I/O, thyristor firing pulses, watchdog functions, memory, control-panel communication, and interfaces to connected I/O and communication boards.
Replacement requires confirmation of board designation, software revision, flash-memory contents, I/O-board arrangement, connected control panel, field exciter, and converter-specific application data.
Board: SDCS-CON-1
Processor: 80C186
ASIC: DC94L01
Platform: DCS 500 / DCP 500
ABB SDCS-CON-1 Official Manuals/Datasheets/Link
Use the official document to verify board layout, memory devices, communication interfaces, I/O-board connections, panel compatibility, watchdog behavior, software revision, and service procedures before replacement.
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
Control Architecture
The SDCS-CON-1 uses an 80C186 processor and ABB DC94L01 ASIC. System software is stored in flash PROM devices D33 and D34, application data is stored in D35, and capacitor-backed static RAM preserves faults, alarms, and operating records after control power is removed.
The board creates the converter firing sequence and coordinates measurements, analog and digital conversion, digital I/O, watchdog supervision, and communication. A charged backup capacitor provides at least eight hours of memory retention and typically supports a longer practical backup time.
System software: S21.1xx
Panel interface: RS485
Compatible panels: CDP310 and CDP311
Service Compatibility
SDCS-CON-1 works with SDCS-IOB-1 or an SDCS-IOB-2 plus SDCS-IOB-3 arrangement and can connect to SDCS-COM-1 or SDCS-COM-5 communication hardware. Compatibility depends on the exact DCS 500/DCP 500 converter configuration and software.
Before replacing the board, record the software and application version, preserve the parameter set when possible, inspect connector condition, and compare all optional boards and field-exciter interfaces. Electrostatic-discharge handling and converter isolation are mandatory.
DCS800 is ABB’s modernization platform for obsolete DCS 500 installations. It is a system-level migration path, not a simple SDCS-CON-1 plug-in board replacement.
