Festo CMMP-AS-***-M0 Series, Manual

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B Diagnostic messages
Festo – GDCP-CMMP-M3/-M0-C-CO-EN – 1510b – English 281
Instructions on actions with the error messages 08-2 … 08-7
Action Notes
Check
whether en­
coder sig­
nals are
faulty.
– Check the wiring, e.g. are one or more phases of the track signals interrupted
or short-circuited?
– Check that installation complies with EMC recommendations (cable screening
on both sides?).
– Only with incremental encoders:
With TTL single-ended signals (HALL signals are always TTL single-ended sig­
nals): Check whether there might be an excessive voltage drop on the GND
line; in this case = signal reference.
Check whether there might be an excessive voltage drop on the GND line; in
this case = signal reference.
– Check the level of supply voltage on the encoder. Sufficient? If not, change the
cable diameter (connect unused lines in parallel) or use voltage feedback
(SENSE+ and SENSE-).
Test with
other en­
coders.
– If the error still occurs when the configuration is correct, test with a different
(error-free) encoder (replace the connecting cable as well). If the error still
occurs, there is a fault in the motor controller. Repair by the manufacturer
required.
Tab. B.2 Instructions on error messages 08-2 … 08-7