YASKAWA SGDV-OFB03A - Polarity Detection Functionality

12.4 Errors in Semi-closed Loop Control with Linear Motors
12-7
12
Error Lists
A.C80:
Absolute Encoder Clear
Error and Multi-turn
Limit Setting 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 lin-
ear servomotor.
A SERVOPACK fault occurred.
Turn the power supply
OFF and then ON again.
If the alarm still occurs,
the SERVOPACK may be
faulty. Replace the SER-
VOPACK.
A.C90:
Encoder Communica-
tions Error
Contact fault of cable connector for
linear scale or incorrect wiring.
Check the status of cable
connector contact for lin-
ear scale.
Re-insert the cable con-
nectors for linear scale
and confirm that the linear
scale is correctly wired.
Disconnection or short-circuit of the
cable for linear scale. Or, incorrect
cable impedance.
Check the linear scale
connection cables.
Use the linear scale con-
nection cables with the
specified rating.
• Corrosion caused by improper tem-
perature, humidity, or gas.
• Short-circuit caused by intrusion of
water drops or cutting oil.
• Connector contact fault caused by
vibration.
Check the operating envi-
ronment.
Improve the operating
environmental condi-
tions, and replace the
cable. If the alarm still
occurs, replace the SER-
VOPACK.
Malfunction caused by noise interfer-
ence.
-
Correct the wiring around
the linear scale to avoid
noise interference (Sepa-
rate the linear scale con-
nection cables from the
linear servomotor main
circuit cable, improve
grounding, etc.)
A SERVOPACK fault occurred. -
Connect the linear servo-
motor to another SERVO-
PACK, and turn ON the
control power. If no alarm
occurs, the SERVOPACK
may be faulty. Replace the
SERVOPACK.
A.C91:
Encoder Communica-
tions Position Data 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 bundled with a
high-current line or near a high-cur-
rent 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 Communica-
tions Timer Error
Noise interference occurred on the
input/output signal line from the lin-
ear scale.
-
Take countermeasures
against noise.
Excessive vibration and shocks were
applied to the linear scale.
Check the operating envi-
ronment.
Reduce the machine
vibration or correctly
install the linear servomo-
tor
.
A.CA0:
Encoder Parameter Error
An 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 lin-
ear servomotor.
Alarm Number: Alarm
Name (Alarm
Description)
Cause Investigative Actions Corrective Actions