
8. TROUBLESHOOTING
B–62835EN/01
256
Confirm the green LED EN on the front of controller.
When green LED EN is turned on, power of Power Mate is ON.
(1)
Fuse F1 on the controller front panel is blown.
(a) Input power voltage is too high.
(b) External 24DCV power supply is faulty.
(c) 24–V power line short–circuit (line–to–line or line–to–ground)
(2)
Input voltage is low
Measure voltage at S terminals of 0V and 24V to confirm 24VDC "100
% is supplied.
If it is not normal, check machine side magnetics circuit.
(3) Power supply printed board in controller is faulty.
When 24 V is found to be input normally in step (2), but 5 V is not output
to the 0 V and 5 V terminals, the power PCB in the controller may be
defective.
(4) Power leakage from other units
Disconnect all cables other than the power cable of the Power Mate,
then retry.
8.2
POWER CANNOT BE
TURNED ON
Points
Causes and Remedies