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