Table 11: Bit Functions
Bit number Bit name Value Function
00 Safety function deactive/active 0 Safety function, fail-safe reaction is active or pending, or warning is
active.
1 Normal operation.
01 Power up self-test 1 Safety option is in PUST state.
02 Safe Torque Off 0 Safe Torque Off is not active.
1 Safe Torque Off is active.
03 Safe Stop 1 a 0 Safe Stop 1 a is not active.
1 Safe Stop 1 a is active.
04 Safe Stop 1 b 0 Safe Stop 1 b is not active.
1 Safe Stop 1 b is active.
05 Safely Limited Speed a 0 Safely Limited Speed-a is not active.
1 Safely Limited Speed-a is active.
06 Safely Limited Speed b 0 Safely Limited Speed-b is not active.
1 Safely Limited Speed-b is active.
07–10 Reserved for future safety functions. – –
11 Internal failure 0 No internal failure is active.
1 Internal failure is active.
12 Reset 0 No safety option reset required.
1 Safety option reset required.
13 Pending fail-safe state 0 No pending fail-safe state.
1 Safety option is in this state at each power-up.
14 External failure 0 No external failure is active.
1 External failure is active.
15 Safe function pending 0 No safe function pending.
1 Safe function pending.
16 General reset 0 No change in state.
1 General reset is done.
17 Customization confirmed 0 No change in state.
1 Customization confirmed by user.
18 Customization aborted 0 No change in state.
1 Customization aborted by user.
19 Customization requested 0 No change in state.
1 Customization is requested by the user.
General Parameter Set-up
Installation Guide | VLT® Safety Option MCB 150/151
AQ279747441421en-000101 / 130R0292 | 61
Danfoss A/S © 2018.09
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