IAI America PCON-CY - Manual (Page 106)

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7. T
roubleshooting
7. Troubleshooting
7.1 What to Do When A Problem Occurs
If you encountered a problem, follow the steps below to conduct the specified checks to gather information needed to
implement quick 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 emergency stop has been actuated, or the motor drive power is cut off.
b. Check the host controller for abnormality.
c. Check the voltage of the 24-VDC main power supply.
d. Check the voltage of the 24-VDC power supply for I/O signals.
e. Check for alarms.
Check the details of each alarm on the PC or teaching pendant.
f. Check the cables for miswiring, disconnection and pinching.
Before checking the continuity of cables, turn off the power (to prevent a runaway actuator) and disconnect all wirings (to
prevent the power from being supplied unexpectedly due to a sneak path).
g. Check the I/O signals.
h. Check the noise elimination measure (ground connection, surge killer installation, etc.).
i. Identify how the problem occurred and the operating condition when the problem occurred.
j. Check the serial numbers of the controller and actuator.
k. Analyze the cause.
l. Take an action.
Before contacting IAI, please check the items in a through j above. Provide the information to our technical staff.
(Reference) Changes in indicators and *ALM output signal in each status
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 input, these signals remain ON while the controller is normal. They turn OFF when the power is cut
off.
These signals cannot be used for providing a contact-b interlock when the power is not supplied to the controller.