12.3 Errors in Semi-closed Loop Control with Rotary Motors
12-5
12
Error Lists
A.C91:
Encoder Communica-
tions Position Data Error
The noise interference occurred on
the input/output signal line because
the encoder cable is bent and the
sheath is damaged.
The encoder cable is bundled with a
high-current line or near a high-cur-
rent line.
Check the encoder cable,
the connector and the
encoder cable layout.
Confirm that there is no
problem with the encoder
cable layout.
Confirm that there is no
surge voltage on the
encoder cable.
A.C92:
Encoder Communica-
tions Timer Error
Noise interference occurred on the
input/output signal line from the
encoder.
Check the operating envi-
ronment.
Take countermeasures
against noise.
Excessive vibration and shocks were
applied to the encoder.
Check the operating envi-
ronment.
Reduce the machine
vibration or correctly
install the servomotor.
A.CA0:
Encoder Parameter Error
An encoder fault occurred.
Turn the power supply
OFF and then ON again.
If the alarm still occurs,
the servomotor may be
faulty. Replace the servo-
motor
A.CB0:
Encoder Echo-back
Error
The encoder wiring and contact are
incorrect.
Check the encoder wiring.
Correct the encoder wir-
ing.
Noise interference occurred due to
incorrect encoder cable specifica-
tions.
Check the encoder wiring.
Use tinned annealed cop-
per twisted pair or
shielded twisted-pair
cable with a core of at
least 0.12 mm².
Noise interference occurred because
the wiring distance for the encoder
cable is too long.
Check the encoder wiring.
The wiring distance must
be 20 m max.
A.CC0:
Multi-turn Limit Dis-
agreement
When using a direct-drive (DD) ser-
vomotor, the multi-turn limit value
(Pn205) is different from that of the
encoder.
Check the value of the
Pn205.
Correct the setting of
Pn205 (0 to 65535).
A.D30:
Position Data Overflow
The multi-turn position data exceeded
+/-32767.
-
Correct the setting
(-32767 to +32767)
Alarm Number: Alarm
Name (Alarm
Description)
Cause
Investigative Actions
Corrective Actions
Summary of Contents for S-V Seres
Page 16: ...xvi ...
Page 62: ...9 Motor and Scale Parameter File 9 2 2 Scale Parameters 9 6 ...