YASKAWA SGD7S-1R9D Product Manual page 497

Alarm Code:
Possible Cause
Alarm Name
The Regenerative
Resistor was discon-
nected when the
SERVOPACK power
supply voltage was
high.
330 hex:
Main Circuit
DC power was sup-
Power Supply
plied when an AC
Wiring Error
power supply input
(Detected when
was specified in the
the main circuit
settings.
power supply is
AC power was sup-
turned ON.)
plied when a DC
power supply input
was specified in the
settings.
A failure occurred in
the SERVOPACK.
The power supply
voltage exceeded the
specified range.
The power supply is
not stable or was
influenced by a light-
ning surge.
The voltage for AC
power supply was too
400 hex:
high during accelera-
Overvoltage
tion or deceleration.
(Detected in the
main circuit
The external regener-
power supply
ative resistance is too
section of the
high for the operating
SERVOPACK.)
conditions.
The moment of inertia
ratio or mass ratio
exceeded the allow-
able value.
A failure occurred in
the SERVOPACK.
Confirmation
If you are using the
Regenerative Resistor built
Measure the resistance into the SERVOPACK,
of the Regenerative replace the SERVOPACK.
Resistor using a mea- If you are using an Exter-
suring instrument. nal Regenerative Resis-
tor, replace the External
Regenerative Resistor.
Check the power sup- Correct the power supply
ply to see if it is a DC setting to match the
power supply. actual power supply.
Check the power sup- Correct the power supply
ply to see if it is an AC setting to match the
power supply. actual power supply.
The SERVOPACK may be
– faulty. Replace the SER-
VOPACK.
Set the AC/DC power
Measure the power
supply voltage within the
supply voltage.
specified range.
Improve the power sup-
ply conditions, install a
Surge Absorber, and then
turn the power supply
Measure the power
OFF and ON again. If an
supply voltage.
alarm still occurs, the
SERVOPACK may be
faulty. Replace the SER-
VOPACK.
Check the power sup-
Set the AC power supply
ply voltage and the
voltage within the speci-
speed and torque
fied range.
during operation.
Select a regenerative
Check the operating
resistance value that is
conditions and the
appropriate for the oper-
regenerative resistance.
ating conditions and load.
Check to see if the
moment of inertia ratio Increase the deceleration
or mass ratio is within time, or reduce the load.
the allowable range.
While the main circuit
power supply is OFF, turn
the control power supply
to the SERVOPACK OFF
– and ON again. If an alarm
still occurs, the SERVO-
PACK may be faulty.
Replace the SERVO-
PACK.
15.2 Alarm Displays
15.2.2 Troubleshooting Alarms
Continued from previous page.
Correction Reference
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page 5-12
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*2
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Continued on next page.
15
15-17