15 Appendix
55-2 FSM: SINCOS encoder
[X2B] - standstill > 24
hrs
Cause:
Input signals of the SinCos encoder have not
changed by a minimum amount for 24 hours
(when safety function is requested).
Measure:
Terminate SS2 or SOS and move axle at least
once during this time.
55-3 FSM: Resolver [X2A] -
signal error
Cause:
- Vector length sin²+cos² is outside the
permissible range.
- The amplitude of one of the two signals is
outside the permissible range.
- Input signal is static (same values to right and
left of maximum).
Measure:
- Check the resolver.
- Check the connection wiring (broken wire, short
between two signals or signal / shield).
- Check for a failure of the exciting current.
- Check the motor and encoder cable / shield
connection on motor and drive side. EMC
malfunctions can trigger the error.
55-7 FSM: other encoder
[X2B] - Faulty angle
information
Cause:
- “Angle faulty” message is sent from servo drive
when status lasts for longer than the allowed
time.
- Encoder at X2B is analysed by the servo drive
- Encoder is defective.
Measure:
- Check the position encoder at X2B.
- Check the connection wiring (broken wire, short
between two signals or signal / shield).
- Check the supply voltage for the EnDat
encoder.
- Check the motor cable / shield connection on
motor and drive side. EMC malfunctions may
trigger the error.
Product manual BL 4000-C Page 287 of 298
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