Manual

Chapter 8 Troubleshooting
289
Alarm
Code
Alarm Name Cause/Treatment
81 Parameter Check
Sum Error
Cause : There is a possibility that the memory data inside MSCON has
destroyed.
Treatment : Establish all the settings again on Gateway Parameter Setting
Tool or write the backup data if it exists.
90 Driver Board Mount
Error
Cause : The number of axes (number of driver boards) set in Gateway
Parameter Setting Tool does not match with the number of the
actually connected axes.
Treatment : Match the numbers of the axes.
9C Fieldbus Module Not
Detected
Cause : Communication board for Fieldbus was not detected.
1) Communication board is not inserted.
2) Malfunction of communication board
Treatment : Turn the power OFF and reboot. If the same error occurs
again, please contact IAI.
9E 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 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 input power supply.
A1 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 power voltage.
If the voltage is normal, please contact IAI.
A2 Motor Power Voltage
Error
Cause : 1) There is a lack in number of regenerative resistors.
2) Malfunction of component inside the controller can be
considered.
Treatment: 1) Add some more regenerative resistors.
2) If it occurs often, possibility of controller malfunction is high.
Please contact IAI.
AB 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 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.
FFF Power-on Log
It is the log at the power being on (it is not an error).