Owner's manual

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6. Troubleshooting
6. Troubleshooting
6.1 Action to Be Taken upon Occurrence of Problem
Upon occurrence of a problem, take an appropriate action in accordance with the procedure below in order to
ensure speedy recovery and prevent recurrence of the problem.
a) Check the status indicator lamps.
SV (green): The servo is ON.
ALM (red): An alarm is present, or an emergency stop has been actuated or the motor drive power is cut
off.
b) Check the host controller for errors.
c) Check the voltage of the main 24 VDC power supply.
d) Check for an alarm.
Confirm the details of the error on the PC or teaching pendant.
e) Check the cables for connection error, disconnection or pinching.
Before performing a continuity check, turn off the power (to prevent a runaway actuator) and disconnect the
cables (to prevent accidental power connection due to a sneak current path).
f) Check the I/O signals.
g) Check the noise elimination measures (grounding, installation of a surge killer, etc.)
h) Review the events leading to the occurrence of a problem, as well as the operating condition at the time of
occurrence.
i) Check the serial numbers of the controller and actuator.
j) Analyze the cause.
k) Take action.
Please check items a) through i) before contacting IAI.
(Reference) Lamp changes in each condition
Servo OFF Servo ON Emergency-stop Motor drive power is cut off
SV (green lamp) Unlit Lit Unlit Unlit
ALM (red lamp) Unlit Unlit Lit Lit
Both the SV and ALM lamps are unlit in the pole sense mode.