ABB DCS880 Drive
1
Posts
1
Users
0
Reactions
32
Views
Sep 30, 2024 11:59 am
A7A2 warning in ABB DCS880 drive indicates mechanical brake not opened. This means the acknowledge signal for the mechanical brake opened (applied) stage at the DI is missing.
- Check the mechanical brake itself.
- Check the mechanical brake cable connections.
- Check the mechanical brake settings in group 44 Mechanical brake control.
- Check that the acknowledgement signal, if used, matches actual status of brake.
- Check the used digital inputs and outputs (groups 10 and 11).