16.2 Alarm Displays
16.2.2 Troubleshooting Alarms
16-40
F30h:
Dynamic Brake
Circuit Error
(An error
occurred in the
dynamic brake
circuit.)
The relay or Magnetic
Contactor used in the
dynamic brake circuit
failed.
•
Check to see if the
relay works.
•
Check to see if the
contacts in the Mag-
netic Contactor have
welded together.
The relay or Magnetic
Contactor may be faulty.
Replace the relay or Mag-
netic Contactor.
–
The operating time of
the relay or Magnetic
Contactor used in the
dynamic brake circuit
was excessive.
Check to see if the
operating time of the
relay and Magnetic
Contactor contacts
(open to closed, closed
to open) is less than
140 ms.
Replace the relay or Mag-
netic Contactor with a
component that has an
operating time less than
140 ms. (Recommended:
Less than 130 ms)
–
The cable used in the
dynamic brake circuit
is broken.
Check to see if the
cable used in the
dynamic brake circuit is
broken.
Replace the broken cable.
–
Dynamic brake circuit
wiring is not correct.
Check the wiring of the
relay and Magnetic
Contactor used in the
dynamic brake circuit.
Wire the relay and Mag-
netic Contactor correctly.
–
There is a mistake in
the allocation setting
for the /DBANS
(Dynamic Brake
Answer Input) signal.
Check the terminal that
was allocated the /
DBANS signal and the
setting of Pn515 =
n.
X
(/DBANS
(Dynamic Brake Answer
Input) Signal Allocation).
•
Wire the terminal that
was allocated the /
DBANS signal correctly.
•
Set Pn515 = n.
X
correctly.
–
Check the operation of
the Magnetic Contac-
tor's auxiliary contacts
and the logic of the /
DBANS signal.
Correct the operation of
the magnetic contactor's
auxiliary contacts and the
logic of the /DBANS sig-
nal to be consistent.
–
A failure occurred in
the SERVOPACK.
–
Turn the power supply to
the SERVOPACK OFF and
ON again. If the alarm still
occurs, the SERVOPACK
may be faulty.
Replace the SERVO-
PACK.
–
Continued on next page.
Continued from previous page.
Alarm Code:
Alarm Name
Possible Cause
Confirmation
Correction
Reference