YASKAWA JUSP-MD D01A Series User Manual page 298

Alarm Number:
Alarm Name
(Alarm Description)
An external regenerative resistor
unit is not connected.
The regenerative resistor unit is
incorrectly wired, or is removed
or disconnected.
The connection of the I/O signals
(CN901) between the SERVO-
A.300:
PACK and converter is faulty.
Regeneration Error
A fault occurred in the SERVO-
PACK or converter.
The power supply voltage
exceeds the specified limit.
Insufficient regenerative resis-
tance, regenerative resistor
capacity.
Or, regenerative power has been
continuously flowing back.
Regenerative power continu-
ously flowed back because nega-
tive load was continuously
applied.
A.320:
The setting of parameter Pn600 is
Regenerative
smaller than the regenerative
Overload
resistor's capacity.
The regenerative resistance is too
high.
The connection of the I/O signals
(CN901) between the SERVO-
PACK and converter is faulty.
A fault occurred in the SERVO-
PACK or converter.
The regenerative resistor unit was
disconnected when the power
supply voltage to the SERVO-
PACK and converter was high.
DC power was supplied.
A.330:
An regenerative resistor unit is
Main Circuit Power
not connected.
Supply Wiring Error
(Detected when the
The
power to the main circuit
converter are open.
is turned ON.)
The connection of the I/O signals
(CN901) between the SERVO-
PACK and converter is faulty.
A fault occurred in the SERVO-
PACK or converter.
Cause
Check the external regenerative
resistor unit connection.
Check the regenerative resistor unit
connection.
Check the connection of CN901.
−
Measure the power supply voltage.
Check the operating condition or
the capacity using the capacity
selection Software SigmaJunma-
Size+, etc.
Check the load applied to the servo-
motor during operation.
Check the regenerative resistor unit
connection and the value of the
Pn600.
Check the regenerative resistance.
Check the connection of CN901.
−
Measure the resistance of the regen-
erative resistor unit using a measur-
ing instrument.
Check the power supply to see if it
is a AC power supply.
Check the regenerative resistor unit
connection.
1 and 2 terminals of the Check the
the converter.
Check the connection of CN901.
−
Investigative Actions
Connect the external regenerative
resistor unit.
Correctly connect the regenerative
resistor unit.
Correctly connect CN901.
While the main circuit power sup-
ply is OFF, turn the control power
supply OFF and then ON again. If
the alarm still occurs, the SERVO-
PACK or converter may be faulty.
Replace the SERVOPACK or con-
verter.
Set the power supply voltage within
the specified range.
Change the regenerative resistance,
regenerative resistor capacity.
Reconsider the operating conditions
using the capacity selection soft-
ware SigmaJunmaSize+, etc.
Reconsider the system including
servo, machine, and operating 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.
Correctly connect CN901.
The SERVOPACK or converter
may be faulty. Replace the SERVO-
PACK or converter.
Replace the regenerative resistor
unit.
Use an AC power supply.
Connect the regenerative resistor
unit.
1 and 2 terminals on Correctly connect the
terminals on the converter.
Correctly connect CN901.
The SERVOPACK or converter
may be faulty. Replace the SERVO-
PACK or converter.
9.1 Alarm Displays
(cont'd)
Corrective Actions
1 and 2
9
9-9