Fanuc Power Mate i-D/H Maintenance Manual

- 19 -
1.3.3 Maintenance of a Servo Amplifier
1.3.3.1 Display of the servo amplifier operation status
The STATUS LEDs on the front of the servo amplifier indicate the operation status of the servo amplifier (whether it is
operating normally, the type of alarm, etc.). Use these LEDs for maintenance, inspection, troubleshooting, etc.
CAUTION
A servo amplifier failure may arise from a combination of multiple causes, in which case it can be difficult to
identify all those causes. Handling the failure in an improper way may worsen the problem. It is therefore
important to analyze the failure status minutely and identify the true cause or causes of the failure. There
may be cases in which the failure appears to have been fixed but later recurs or cause a more serious
trouble. If you are not sure about the root cause of or corrective action for a failure, do not act on your own;
please contact the machine tool builder or FANUC for instructions on proper action.
[αi series]
(1) Power supply
STATUS LED position
STATUS
display
Description
The STATUS LED is off.
Control power has not been supplied, cable is faulty, or control power
circuit is defective.
Not ready status
The main circuit is not supplied with power (magnetic contactor is off);
emergency stop state.
Ready status
The main circuit is supplied with power (magnetic contactor is on); the
power supply is ready for operation.
Warning state (The dot at the lower right lights.)
The power supply has failed; an alarm has occurred after a certain
time of operation.
The warning type is indicated by the character displayed.
Nameplate
Alarm status
The alarm type is indicated by the character displayed.
(2) Servo amplifier
STATUS LED
position
STATUS
display
Description
The STATUS LED is off.
Control power has not been supplied, cable is faulty, or control
power circuit is defective.
Blink
The control power is short-circuited (- blinks).
Cable failure
Waiting for the READY signal from the CNC.
Ready status
The servo motor is excited.
Nameplate
Alarm status
The alarm type is indicated by the character displayed.

Leave a Reply

Your email address will not be published. Required fields are marked *