Replacing a defective auxiliary contact

Part number

Designation

Use

29704545 (CE variant)/
29721016 (UL variant)

Contact element Q1.1

Separation ES-

29704545 (CE variant)/
29721016 (UL variant)

Contact element Q1.2

Disconnector return signal

If the auxiliary contact Q1.1 is defective, additionally check the following components for correct function:

  • Auxiliary contact Q1.2
  • Disconnector Q1
  • Fuse F3

 

If the auxiliary contact Q1.2 is defective, additionally check the following components for correct function:

  • Auxiliary contact Q1.1
  • Disconnector Q1
  • I/O module

 

Procedure:

  1. Remove the cover.
  2. Remove the auxiliary contacts in accordance with the instructions from ABB.
  3. Disconnect the electrical connections.
  4. Mount and install the auxiliary contact in reverse order in accordance with the instructions from ABB.