YASKAWA SGD7S series Product Manual page 496

12.2 Alarm Displays
12.2.2 Troubleshooting Alarms
Alarm Number:
Alarm Name
A.330:
Main Circuit
Power Supply
Wiring Error
(Detected when
the main circuit
power supply is
turned ON.)
12-20
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
not set to 0 and an
External Regenerative
Check to see if an
Resistor is not con-
External Regenerative
nected to one of the
Resistor is connected
following
and check the setting of
SERVOPACKs:
Pn600.
SGD7S-R70A, -R90A,
-1R6A, -2R8A, -R70F,
-R90F, -2R1F, or
-2R8F.
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
SERVOPACK.
Continued from previous page.
Correction Reference
–
page 5-14
page 4-21,
page 5-57
–
Continued on next page.