IAI America ACON-CG - Manual (Page 161)

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10. T
roubleshooting
10. Troubleshooting
10.1 Action to Be Taken upon Occurrence of Problem
Upon occurrence of a problem, take an appropriate action according to 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 for error in the host controller.
c. Check the voltage of the main 24-VDC power supply.
d. Check the voltage of the 24-VDC power supply for I/O signals.
e. Check for alarm.
Confirm the details of error on the PC or teaching pendant.
f. 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).
g. Check the I/O signals.
h. Check the noise elimination measures (grounding, installation of surge killer, etc.).
i. Review the events leading to the occurrence of problem, as well as the operating condition at the time of
occurrence.
j. Check the serial numbers of the controller and actuator.
k. Analyze the cause.
l. Take
action.
Please check items a through j before contacting IAI.
(Reference) Changes in status indicator lamps and *ALM output signal in respective conditions
Servo OFF Servo ON
Emergency stop
actuated
Motor drive power cut off
SV (lamp) Unlit Lit Unlit Unlit
ALM (lamp) Unlit Unlit Lit Lit
*ALM (signal) OFF OFF ON ON
(Note 2) The *ALM output signal is a contact-b signal.
After the power is turned on, this signal remains ON while the controller is normal. It remains OFF
while the power is cut off.
It cannot be used as a contact-b interlock when the power is cut off.