YASKAWA SGM7D-30F Product Manual page 290

Alarm Number:
Possible Cause
Alarm Name
A.7Ab:
The fan inside the
SERVOPACK
SERVOPACK
Built-in Fan
stopped.
Stopped
The power to the
absolute encoder was
turned ON for the first
time.
The Encoder Cable
was disconnected
and then connected
again.
A.810:
Encoder Backup Power is not being
Alarm supplied both from
(Detected at the the control power
encoder, but only supply (+5 V) from the
SERVOPACK and
when an abso-
from the battery
lute encoder is
power supply.
used.)
A failure occurred in
the absolute encoder.
A failure occurred in
the SERVOPACK.
A failure occurred in
A.820:
the encoder.
Encoder Check-
sum Alarm
(Detected at the
encoder.)
A failure occurred in
the SERVOPACK.
The battery connec-
A.830:
tion is faulty or a bat-
Encoder Battery
tery is not connected.
Alarm
The battery voltage is
(The absolute
lower than the speci-
encoder battery
fied value (2.7 V).
voltage was lower
than the speci-
A failure occurred in
fied level.)
the SERVOPACK.
3.5 FT83 SERVOPACKs with Analog Voltage/Pulse Train References
Confirmation
Remove foreign matter
from the SERVOPACK. If
Check for foreign matter an alarm still occurs, the
inside the SERVOPACK. SERVOPACK may be
faulty. Replace the SER-
VOPACK.
Check to see if the
power supply was
Set up the encoder.
turned ON for the first
time.
Check to see if the
Check the encoder con-
power supply was
nection and set up the
turned ON for the first
encoder.
time.
Replace the battery or
Check the encoder implement similar mea-
connector battery and sures to supply power to
the connector status. the encoder, and set up
the encoder.
If the alarm still occurs
after setting up the
–
encoder again, replace
the Servomotor.
The SERVOPACK may be
– faulty. Replace the SER-
VOPACK.
 When Using an Abso-
Set up the encoder again.
If the alarm still occurs,
the Servomotor may be
faulty. Replace the Servo-
– motor.
 When Using a Single-
The Servomotor may be
faulty. Replace the Servo-
motor.
The SERVOPACK may be
– faulty. Replace the SER-
VOPACK.
Check the battery con- Correct the battery con-
nection. nection.
Measure the battery
Replace the battery.
voltage.
The SERVOPACK may be
– faulty. Replace the SER-
VOPACK.
3.5.3 Troubleshooting Alarms
Continued from previous page.
Correction Reference
–
*1
–
–
lute Encoder
*1
turn Absolute Encoder
or Incremental Encoder
–
*1
*1
–
Continued on next page.
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