9.1 Troubleshooting
9-7
9
A.100
Overcurrent
(An overcurrent
flowed through
the IGBT)
or
Heat Sink
Overheated
(
Heat sink of
SERVOPACK
was overheated.)
Occurred when the
control power sup-
ply was turned
ON.
The overload alarm has been reset by turning
OFF the power too many times.
Change the alarm resetting method.
The connection between SERVOPACK board
and thermostat switch is incorrect.
Replace the SERVOPACK.
A SERVOPACK board fault occurred.
Replace the SERVOPACK.
Occurred when the
main circuit power
supply was turned
ON or an
overcurrent
occurred while the
servomotor was
running.
The connection between grounding and U, V, or
W is incorrect.
Check the wiring and connect correctly.
The grounding line has contact with other termi-
nals.
Check the wiring and connect correctly.
A short-circuit occurred between U, V and W of
the servomotor cable and the grounding.
Repair or replace the servomotor cable.
A short-circuit of phase U, V, and W of the servo-
motor cable occurred.
Repair or replace the servomotor cable.
The wiring of regenerative resistor is incorrect.
Check the wiring and connect correctly.
A short-circuit between U, V and W of the
SERVOPACK and the grounding occurred.
Replace the SERVOPACK.
A SERVOPACK fault occurred (current feedback
circuit, power transistor or board fault).
Replace the SERVOPACK.
A short-circuit between U, V and W of the servo-
motor and the grounding occurred.
Replace the servomotor.
A short-circuit of phase U, V, and W of the servo-
motor occurred.
Replace the servomotor.
A fault occurred in the dynamic brake circuit.
Replace the SERVOPACK, and reduce the
load, or reduce the number of rotations used.
Frequent activation of dynamic brake (occur-
rence of DB overload alarm)
Replace the SERVOPACK, and reduce the DB
operation frequency.
The overload alarm has been reset by turning
OFF the power too many times.
Change the alarm resetting method.
Overload or regenerative power exceeds the
regenerative resistor capacity.
Reconsider the load and operation conditions.
Incorrect mounting of SERVOPACK (direction,
distance to other devices)
Heat radiation of the panel or heat around the
panel.
The ambient temperature for SERVOPACK
must be 55
°
C or less.
A SERVOPACK fan fault occurred.
Replace the SERVOPACK.
A SERVOPACK fault occurred.
Replace the SERVOPACK.
A.300
Regeneration
Error Detected
(Detected when
the power to the
main circuit was
turned ON)
Occurred when the
control power sup-
ply was turned ON
A SERVOPACK board fault occurred.
Replace the SERVOPACK.
Occurred when the
main circuit power
supply was turned
ON.
Pn600 is set to a value other than “0” for servo-
motor 400 W or less, and an external regenera-
tive resistor is not connected.
Connect a external regenerative resistor, or set
Pn600 to “0” if an external regenerative resis-
tor is not connected.
Check for wrong wiring or disconnection of
regenerative resistor.
Correct the wiring for the external regenerative
resistor.
A SERVOPACK fault occurred (such as regener-
ative transistor and voltage sensor fault).
Replace the SERVOPACK.
Occurred during
normal operation.
Check for wrong wiring and disconnection of
regenerative resistor.
Correct the wiring for the external regenerative
resistor.
The jumper between B2 and B3 is removed for
the servomotor 500 W or more.
Correct the wiring.
Regenerative resistor is disconnected, so the
regenerative energy became excessive.
Replace the regenerative resistor or replace the
SERVOPACK . Reconsider the load and opera-
tion conditions.
A SERVOPACK fault, such as regenerative tran-
sistor and voltage sensor fault, occurred.
Replace the SERVOPACK.
Table 9.3 Alarm Display and Troubleshooting (Cont’d)
Alarm
Display
Alarm Name
Situation at Alarm
Occurrence
Cause
Corrective Actions
SIEPS80000025.book 7 ページ ２００４年１０月２５日 月曜日 午前１１時５７分
