YASKAWA SGD7S-xxxDA0 series Product Manual page 546

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