11. Troubleshooting
11
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6
(5) Alarm No. 21 : NO SIGNAL DETECTION (ENC)
[Details]
There was an A, B or Z phase signal error for the orientation 1024P/rev encoder.
Investigation items
Investigation results
Remedy
Bit0 is set to "1" even though
encoder orientation is not executed.
Set the correct value.
1 Check the spindle
parameter (SP037:
SFNC5) setting.
No particular problem.
Investigate item 2, and carry out the
appropriate measures.
Connector came (was coming) loose. Install correctly.
2 Jiggle the connector
(spindle drive unit side
and detector side) to
see whether it is
coming loose.
Connector did not come (was not
coming) loose.
Investigate item 3, and carry out the
appropriate measures.
The connection is faulty, or there is a
broken wire.
Replace the detector cable. Correctly
connect the cable.
3 Turn the power OFF,
and check the detector
cable connection with
a tester.
The connection is normal.
Replace the spindle drive unit or
detector.