Alarm Number: Alarm
Name (Alarm Description)
Cause
Investigative Actions
Corrective Actions
n
Corrosion caused by
improper temperature,
humidity, or gas.
n
Short-circuit caused by
intrusion of water drops
or cutting oil.
n
Connector contact fault
caused by vibration.
Check the operating envi-
ronment.
Improve the operating envi-
ronmental conditions, and
replace the cable. If the
alarm still occurs, replace
the SERVOPACK.
Malfunction caused by noise
interference.
-
Correct the wiring around
the linear scale to avoid
noise interference (Separate
the linear scale connection
cables from the linear servo-
motor main circuit cable,
improve grounding, etc.)
A SERVOPACK fault
occurred.
-
Connect the linear servo-
motor to another SERVO-
PACK, and turn ON the con-
trol power. If no alarm
occurs, the SERVOPACK
may be faulty. Replace the
SERVOPACK.
A.C91: Encoder Communi-
cations Position Data Accel-
eration Rate Error
The noise interference
occurred on the input/output
signal line because the
linear scale connection
cable is bent and the sheath
is damaged.
Check the cables and con-
nectors for linear scale.
Confirm that there is no
problem with the layout of
the linear scale connection
cable.
The encoder cable is bun-
dled with a high-current line
or near a high-current line.
Check the layout of the
linear scale connection
cable.
Confirm that there is no
surge voltage on the linear
scale connection cable.
A.C92: Encoder Communi-
cations Timer Error
Noise interference occurred
on the input/output signal
line from the linear scale.
-
Take countermeasures
against noise.
Excessive vibration and
shocks were applied to the
linear scale.
Check the operating envi-
ronment.
Reduce the machine vibra-
tion or correctly install the
linear servomotor.
A.CA0: Encoder Parameter
Error
A linear scale fault occurred. Turn the power supply OFF
and then ON again.
If the alarm still occurs, the
linear servomotor may be
faulty. Replace the linear
servomotor.
A.CB0: Encoder Echoback
Error
The linear scale wiring and
contact are incorrect.
Check the encoder wiring.
Correct the linear scale
wiring.
Noise interference occurred
due to incorrect linear scale
cable specifications.
-
Use tinned annealed copper
twisted pair or shielded
twisted-pair cable with a
core of at least 0.12 mm².
Sigma-5 and Sigma-7 Series SERVOPACKs
Error Lists
Errors in Semi-closed Loop Control with Linear Motors
| | Feedback Option Module Type 3 - Manual version C - Revision 0 | en |
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