[hutch07]

All,
On our Mazak 510C II I am getting an F4 18 alarm on the Mitsubishi 4th axis drive – MDS-DH-V1-20. The screen is displaying a 31 servo malfunction. The cable rang out OK. Can anyone point me in the right direction?

:drowning:

[hutch07]

Alarm No.
18
Motor side detector: Initial communication error
Initial communication with the motor side detector failed.
Investigation details Investigation results Remedies SV SP
1 Check the servo parameter The value is not set correctly. Correctly set SV025.
(SV025.ent) setting value.
OSE104: 0, OSA104: 1
Are all others set to 2?
(Excluding slave axis for
synchronous control)
The value is set correctly. Check the investigation item No. 2.
��
The connector is disconnected (or
loose).
2 Jiggle the detector connectors (drive Correctly install.
unit side and detector side) and
check if they are disconnected. The connector is not disconnected. Check the investigation item No. 3.
�� ��
3 Turn the power OFF, and check the The connection is faulty. Replace the detector cable.
detector cable connection with a
tester.
The connection is normal. Check the investigation item No. 4. �� ��
4 Replace with another unit, and check The alarm is on the drive unit side. Replace the drive unit.
whether the fault is on the unit side or
detector side.
The alarm is on the detector side. Check the investigation item No. 5. �� ��
5 Check if there is any abnormality in
the detector's ambient environment.
(Ex. Ambient temperature, noise,
grounding)
Take remedies according to the causes of the abnormality in the ambient
environment. �� ��