IndustrialDriveDataDrive Board & Diagnostic Database
DCS800 board-chain evidence

ABB DCS800 SDCS-CON-4 / SDCS-POW-4 / SDCS-PIN-51 Board Chain

Shows how the DCS800 D5-D7 board chain should be documented before classifying a case as control-board, power-supply-board, measurement-interface or downstream firing evidence.

Functional path

D5-D7 converter identity
Auxiliary supply to SDCS-POW-4
Supply rails to SDCS-CON-4
X12 / X13 interface to SDCS-PIN-51
Measurement / firing interface evidence
Board-chain decision

Diagnostic signals and checkpoints

Dead panel or control boardUnstable status displayFieldAck plus control resetMeasurement route suspicionBoard replacement requestD5-D7 board labels available

Technician notes

  • A board-chain request should contain board labels, converter size, supply condition and connector evidence, not only the visible fault code.
  • SDCS-POW-4 evidence comes before SDCS-CON-4 replacement when the control section is dead or unstable.
  • SDCS-PIN-51 evidence matters when measurement, firing or D5-D7 interface routing is part of the fault picture.
Evidence intake

Turn this record into a qualified service request

A repair decision is much more reliable when the request includes the exact identity of the drive, the first fault evidence and the machine condition when the symptom appeared.

  • Complete drive type code / MLFB or nameplate model
  • Fault code, fault value and first event before reset
  • When the event appears: power-up, enable, ramp, run, decel or stop
  • Motor/cable connected or isolated during the symptom
  • Visible board, option-card, module and connector identifiers
  • Previous repair history, replacement parts and repeat-failure pattern
Prepare request →