YASKAWA SGMJV User Manual page 309

9 Troubleshooting
9.1.2 Troubleshooting of Alarms
Alarm Number:
Alarm Name
A.330:
Main Circuit Power
Supply Wiring Error
(Detected when the main
circuit power supply is
turned ON.)
9-10
Cause
The regenerative resistor discon-
nected when the SERVOPACK
power supply voltage was high.
In the AC power input mode, DC
power was supplied.
In the DC power input mode, AC
power was supplied.
The regenerative resistor capacity
(Pn600) is set to a value other
than 0 for a SGDV-R70F, -R90F,
-2R1F, -R70A, -R90A, -1R6A, or
-2R8A SERVOPACK, and an
external regenerative resistor is
not connected.
An external regenerative resistor
is not connected to the SGDV
-470A, -550A, -590A, -780A, -
210D, -260D, -280D, or -370D
SERVOPACK.
The jumper between the power
supply terminals B2 and B3 has
been removed for one of these
SERVOPACKs: SGDV-3R8A,
-5R5A, -7R6A, -120A, -180A,
-200A, -330A, -1R9D, -3R5D,
-5R4D, -8R4D, -120D, and
-170D.
A SERVOPACK fault occurred.
Investigative Actions
Measure the resistance of the regen-
erative resistor using a measuring
instrument.
Check the power supply to see if it
is a DC power supply.
Check the power supply to see if it
is an AC power supply.
Check the external regenerative
resistor connection and the value of
the Pn600.
Check the connection of the exter-
nal regenerative resistor or the
Yaskawa regenerative resistor unit
and the set value in Pn600.
Confirm that a jumper is mounted
between the power supply terminals
B2 and B3.
−
(cont'd)
Corrective Actions
When using a regenerative resistor
built in the SERVOPACK:
Replace the SERVOPACK.
When using an external regenera-
tive resistor:
Replace the external regenerative
resistor.
Correct the settings to match the
actual power supply specifications.
Correct the settings to match the
actual power supply specifications.
Connect the external regenerative
resistor, or set Pn600 to 0 if no
external regenerative resistor is
required.
Connect an external regenerative
resistor and set Pn600 to the appro-
priate value, or connect a Yaskawa
regenerative resistor unit and set
Pn600 to 0.
Correctly mount a jumper.
The SERVOPACK may be faulty.
Replace the SERVOPACK.