YASKAWA Σ-V Series User Manual page 254

Alarm:
Alarm Name
Regenerative resistor capacity
(Pn600) is set to a value other
than 0 for a SGDV-R70,
-R90, -1R6, or -2R8 SERVO-
PACK, and an external regenera-
tive resistor is not connected.
The jumper between the power
supply terminals B2 and B3 is
removed.
A.300:
Regeneration Error
The external regenerative resis-
tor is incorrectly wired, or is
removed or disconnected.
A SERVOPACK fault occurred.
The power supply voltage
exceeds the specified limit.
Incorrect external regenerative
resistance.
Insufficient SERVOPACK capac-
ity or regenerative resistor capac-
ity.
Or, regenerative power has been
continuously flowing back.
Regenerative power continu-
A.320:
ously flowed back because nega-
Regenerative
tive load was continuously
Overload
applied.
The setting of parameter Pn600 is
smaller than the external regener-
ative resistor's capacity.
The external regenerative resis-
tance is too high.
A SERVOPACK fault occurred.
The regenerative resistor discon-
nected when the SERVOPACK
power voltage was increased.
A.330:
Main Circuit Power
In the AC power input mode, DC
Supply Wiring Error
power was supplied.
(Detected when the
In the DC power input mode, AC
power to the main circuit
power was supplied.
is turned ON.)
Regenerative resistor capacity
(Pn600) is not set to 0 even
though the regenerative resistor is
disconnected.
A SERVOPACK fault occurred.
Cause Investigative Actions
Check the external regenerative
resistor connection and the value of
the Pn600.
Confirm that a jumper is mounted
between the power supply terminals
B2 and B3.
Check the external regenerative
resistor connection.
−
Measure the power supply voltage.
Check the operation condition or
the capacity using the capacity
selection Software SigmaJunma-
Size+, etc.
Check the load to the linear servo-
motor during operation.
Check the external regenerative
resistor connection and the value of
the Pn600.
Check the regenerative resistance.
−
Measure the resistance of the regen-
erative resistor.
Check the power supply to see if it
is a DC power supply.
Check the power supply to see if it
is a AC power supply.
Is the regenerative resistor con-
nected?
If it is, check the regenerative resis-
tor capacity.
−
8.1 Troubleshooting
Corrective Actions
Connect the external regenerative
resistor, or set Pn600 to 0 if no
regenerative resistor is required.
Correctly mount a jumper.
Correctly connect the external
regenerative resistor.
While the main circuit power sup-
ply is OFF, turn the control power
supply OFF and then turn ON
again. If the alarm still occurs, the
SERVOPACK may by faulty.
Replace the SERVOPACK.
Set the power supply voltage within
the specified range.
Change the regenerative resistance,
regenerative resistor capacity, or
SERVOPACK capacity. Reconsider
the operation conditions using the
capacity selection software Sigma-
JunmaSize+, etc.
Reconsider the system including
servo, machine, and operation con-
ditions.
Set the Pn600 to a correct value.
Change the regenerative resistance
to a correct value or use an external
regenerative resistor of appropriate
capacity.
The SERVOPACK may be faulty.
Replace the SERVOPACK.
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.
Set Pn600 to 0.
The SERVOPACK may be faulty.
Replace the SERVOPACK.
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