Chapter 9 Troubleshooting
POWER CON
PCON-CB/LC
228
Alarm
Code
Alarm Level Alarm Name Cause/Treatment
0C9 Overvoltage Cause : The voltage of the power regenerative circuit has
risen above the threshold.
Treatment : A malfunction of a component inside the
controller can be considered. Please contact IAI.
0CA Overheat
Cause : This indicates overheat (90°C or more) of the
components inside the controller.
1) Operation is performed with the load condition
exceeding the specified range.
2) High temperature around the controller.
3) Load to the motor is high due to external
force.
4) A faulty part inside the controller.
Treatment : 1) Revise the operation condition such as
decreasing the acceleration/deceleration
speed.
2) Lower the ambient temperature of the
controller.
3) Confirm that there is no error in the
mechanical part assembly condition.
(Note) This error would not normally occur. If it occurs,
confirm there is not 1) to 3) above. If the same error is
issued again even after confirming 1) to 3) is not in the
condition, it is considered to be a malfunction. Please
contact IAI.
0CB Current sensor offset
adjustment error
Cause : An error was detected on the current detection
sensor while in initializing at the startup.
Malfunction is considered on the current
detection sensor and peripheral components.
Treatment : Replacement of PC board or adjustment of offset
is required. Please contact IAI.
0CC
Cold start
Control power source
voltage error
Cause : The control power voltage dropped less than the
voltage drop threshold (120% of 24V DC =
28.8V).
1) The voltage of 24V DC power supply is high.
2) A faulty part inside the controller.
3) During acceleration/deceleration and
servo-on that use the remote sensing function
of 24V DC power supply, the current
consumption rises transiently.
Using the remote sensing function with a
power supply with no enough current capacity
may cause overvoltage responding to the
current change.
Treatment : 1) 2) Check the voltage of the power supply.
3) Think to use a power supply with enough
current capacity or not to use the remote
sensing function.
In the case that the voltage is normal, please
contact IAI.
0CE Drop in control supply
voltage
Cause : The control power voltage dropped less than the
voltage drop threshold (80% of 24V DC = 19.2V).
1) The voltage of 24V DC power supply is low.
2) A faulty part inside the controller.
Treatment : Check the voltage of the power supply.
In the case that the voltage is normal, please
contact IAI.
0CF
Operation
release
I/O 24V power supply
error
Cause : I/O 24V power voltage was dropped.
1) The voltage of I/O 24V DC power supply is
low, or not input.
2) A faulty part inside the controller.
Treatment : Check the voltage of the power supply.
In the case that the voltage is normal, please
contact IAI.
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