Chapter 8 Troubleshooting
289
Alarm
Code
Alarm Name Cause/Treatment
9D
(89D)
Fieldbus Module
Initialization Timeout
Cause : Initialization of the Fieldbus module did not finish even after a
certain period of the time has passed.
Treatment : Turn the power OFF and reboot. If the same error occurs
again, please contact IAI.
9E
(89E)
Fan Error Cause : A Fan error was detected.
Treatment : It is considered that it is the end of the product life of the fan
(approximately 3 years). Replace the fan.
A0
(8A0)
Control Power
Overvoltage
Cause : Control power voltage reached beyond the overvoltage
threshold (120% of 24V DC = 28.8V).
1) The voltage of 24V DC power supply is high.
2) A faulty part inside the controller
Treatment : Check the voltage of the control power supply.
A1
(8A1)
Control Power
Voltage Drop
Cause : The control power voltage dropped less than the voltage drop
threshold (70% of 24V DC = 16.8V).
1) The voltage of 24V DC power is low
2) A faulty part inside the controller
Treatment : Check the control power voltage.
If the voltage is normal, please contact IAI.
A2
(8A2)
Motor Power
Overvoltage
Cause : 1) Excess motor voltage has been detected.
2) There is a lack in number of regenerative resistors.
3) Malfunction of component inside the controller can be
considered.
Treatment : 1) Check the motor power voltage.
2) Add some more regenerative resistors.
3) If it occurs often, possibility of controller malfunction is high.
Please contact IAI.
A3
(8A3)
Motor Power Voltage
Drop
Cause : 1) Motor power voltage dropped has been detective.
2) The motor power was not turned ON within 2.5sec after the
control power was turned ON with the emergency stop
being released.
Treatment : 1) Check the motor power voltage.
2) In case the motor power cannot be turned on within 2.5sec,
turn ON the motor power under the condition of emergency
stop, and then cancel the emergency stop.
AB
(8AB)
Assumed
Regenerative
Discharge Excessive
Power
Cause : The regenerative electric power exceeded what can be dealt
with the regenerative resistor.
Treatment : Decrease the acceleration/deceleration speed, revise the
operation interval or connect an external optional regenerative
resistor.
AC
(8AC)
Continuous
Regenerative
Excessive Discharge
Cause : The regenerative electric power exceeded what can be dealt
with the regenerative resistor.
Treatment : Decrease the acceleration/deceleration speed, revise the
operation interval or connect an external optional regenerative
resistor. If there is no improvement even with the treatment, it
is likely a malfunction of the controller.
AF
(8AF)
Drive Cutoff Relay
Weld Detected
Cause : Weld on drive cutoff relay has been detected.
Treatment : The relay or controller must be replaced. Please contact IAI.
BA
(8BA)
Number of Axes /
Operation Mode
Inconsistent
Cause : The number of axes set in the Gateway parameter and that of
axes figured out from the operation mode are not the same.
Treatment : As the parameter setting is inappropriate, revise the Gateway
parameter setting.
BF
(8BF)
Internal
Communication Error
(CLK)
Cause : IC communication error has occurred on the Gateway board.
Treatment : Turn the power OFF and reboot. If the same error occurs
again, please contact IAI.
CA
(8CA)
Overheat Cause : Overheat on the power supply board has been detected.
1) Operation is performed with the load condition exceeding
the specified range.
2) High temperature around the controller.
Treatment : 1) Revised the operation condition such as decreasing the
acceleration/deceleration speed.
2) Lower the ambient temperature of the controller.
FA
(8FA)
CPU Error Cause :
Error reset has been detected on the CPU in the Gateway board.
Treatment : Turn the power OFF and reboot. If the same error occurs
again, please contact IAI.
FFF Power-on Log It is the log at the power being on (it is not an error).
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