YASKAWA SGM7D-30F Product Manual page 227

3.4 Command Option Attachable-type FT82 SERVOPACKs with INDEXER Modules
3.4.3 Troubleshooting Alarms
Alarm Number:
Alarm Name
A.330:
Main Circuit
Power Supply
Wiring Error
(Detected when
the main circuit
power supply is
turned ON.)
A.400:
Overvoltage
(Detected in the
main circuit
power supply
section of the
SERVOPACK.)
3-158
Possible Cause
The regenerative
resistor was discon- Measure the resistance
nected when the of the regenerative
SERVOPACK power resistor using a measur-
supply voltage was ing instrument.
high.
DC power was sup-
plied when an AC Check the power sup-
power supply input ply to see if it is a DC
was specified in the power supply.
settings.
AC power was sup-
plied when a DC Check the power sup-
power supply input ply to see if it is an AC
was specified in the power supply.
settings.
Pn600 (Regenerative
Resistor Capacity) is Check it see if an Exter-
not set to 0 and an nal Regenerative Resis-
External Regenerative tor is connected and
Resistor is not con- check the setting of
nected to an SGD7S- Pn600.
2R8A SERVOPACKs.
A failure occurred in
–
the SERVOPACK.
The power supply
Measure the power
voltage exceeded the
supply voltage.
specified range.
The power supply is
not stable or was Measure the power
influenced by a light- supply voltage.
ning surge.
The voltage for AC Check the power sup-
power supply was too ply voltage and the
high during accelera- speed and torque
tion or deceleration. during operation.
The external regener-
Check the operating
ative resistance is too
conditions and the
high for the operating
regenerative resistance.
conditions.
The moment of inertia Check to see if the
ratio or mass ratio moment of inertia ratio
exceeded the allow- or mass ratio is within
able value. the allowable range.
A failure occurred in
–
the SERVOPACK.
Confirmation
If you are using the regen-
erative resistor built into
the SERVOPACK, replace
the SERVOPACK.
If you are using an Exter-
nal Regenerative Resis-
tor, replace the External
Regenerative Resistor.
Correct the power supply
setting to match the
actual power supply.
Correct the power supply
setting to match the
actual power supply.
Connect an External
Regenerative Resistor, or
if an External Regenera-
tive Resistor is not
required, set Pn600 to 0.
The SERVOPACK may be
faulty. Replace the SER-
VOPACK.
Set the AC/DC power
supply voltage within the
specified range.
Improve the power sup-
ply conditions, install a
surge absorber, and then
turn the power supply
OFF and ON again. If an
alarm still occurs, the
SERVOPACK may be
faulty. Replace the SER-
VOPACK.
Set the AC power supply
voltage within the speci-
fied range.
Select a regenerative
resistance value that is
appropriate for the oper-
ating conditions and load.
Increase the deceleration
time, or reduce the load.
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.
Continued from previous page.
Correction Reference
–
*1
*1
–
–
–
–
*4
–
–
Continued on next page.