DSQC608 3HAC12934-1

FAQS

• Where is ABB DSQC608 3HAC12934-1 installed in a dual-cabinet IRC5 system?
  The customer I/O power supply is located in the Control Module.
• Which optional assembly affects access to ABB DSQC608 3HAC12934-1?
  The flange-disconnect assembly, when fitted, is removed as part of the access sequence and refitted after the replacement supply is connected.
• How is ABB DSQC608 3HAC12934-1 retained mechanically?
  An upper and a lower attachment screw secure the power-supply unit.
• Is ABB DSQC608 3HAC12934-1 the same cabinet component as the control supply?
  No. The customer I/O supply, control supply and drive-system supply occupy distinct functions and positions in the IRC5 arrangement.
• What is disconnected before the retaining screws of ABB DSQC608 3HAC12934-1 are released?
  After isolating main power and removing any obstructing optional access assembly, disconnect all supply connectors and retain their original assignments. Release the upper and lower attachment screws only after the harness is disconnected.
• At what stage should the harness be reconnected to ABB DSQC608 3HAC12934-1?
  Refit the supply and secure its attachment screws first, then restore all connectors to their identified positions. Refit the optional flange-disconnect assembly after the supply connections are complete.
• Is switching off customer I/O signals sufficient isolation for work on ABB DSQC608 3HAC12934-1?
  No. Signal states do not isolate the power supply. Switch off and isolate the controller main power before removing or refitting this unit, following the cabinet electrical safety procedure.
• Why can a successful IRC5 restart leave a fault supplied by ABB DSQC608 3HAC12934-1 unresolved?
  Controller startup does not test every customer I/O circuit. Check the affected field-I/O devices and their supply path separately in a controlled cell state, so a remaining connector or field-load fault is not overlooked.