15 Appendix
56-9 FSM: error cross
comparison encoder
evaluation
Cause:
Cross-comparison between μC1 and μC2 has
detected an angle difference or rotational speed
difference or a difference in capture times for the
position encoders.
Measure:
Timing disrupted. If the error occurs again after a
reset, the safety module is presumably defective.
Group 57: FSM: Inputs/Outputs
57-0 FSM: I/O - Self test
error (internal/external)
Cause:
- Internal error of digital inputs DIN40 ... DIN43
(detected via internal test signals).
- Error at brake output at X6 (signalling, detected
by test pulses).
- Internal error of brake output (detected via
internal test signals).
- Internal error of digital outputs DOUT40 –
DOUT42 (detected via internal test signals).
Measure:
- Check the connection wiring for the digital
outputs DOUT40...DOUT42 (short circuit, cross
circuit, etc.).
- Check the connection wiring for the brake (short
circuit, cross circuit, etc.).
- Brake connection: The error may occur with
long motor cables if:
1. The brake output X6 was configured for the
brake (this is the case with factory settings!) and
2. A motor without a holding brake is used and
the brake connection lines in the motor cable are
terminated at X6. In this case: Disconnect the
brake connection lines at X6.
- If there is no error in the connection wiring, there
may be an internal error in the module (check by
replacing the module).
57-1 FSM: digital inputs -
signal level error
Cause:
Exceeding / violation of discrepancy time with
multi-channel inputs (DIN40 ... DIN43, two-
handed control device, mode selector switch).
Measure:
- Check the external active and passive sensors
– do they switch on two channels and
simultaneously (within the parameterised
discrepancy time).
- Two-handed control device: Check how the
device is operated by the user – are both
pushbuttons pressed within the discrepancy
time? Give training if necessary.
- Check the set discrepancy times – are they
sufficient?
Product manual BL 4000-C Page 289 of 298
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