LED Operator Display Fault Name
CPF02
A/D Conversion Error
An A/D conversion error occurred.
Cause Possible Solution
Control circuit is damaged. Cycle power to the drive. If the problem continues, replace the drive.
Control circuit terminals have
shorted out (+V, AC).
• Check for wiring errors along the control circuit terminals.
•
Correct the wiring.
Check the resistance of the speed potentiometer and related wiring.
Control terminal input current has
exceeded allowable levels.
•
Check the input current.
• Reduce the current input to control circuit terminal (+V) to 20 mA.
LED Operator Display Fault Name
CPF06
EEPROM Data Error
There is an error in the data saved to EEPROM.
Cause Possible Solution
Control circuit is damaged. Cycle power to the drive. If the problem continues, replace the drive.
The power supply was switched off
when
parameters
were written (e.g.,
using an option unit).
• Cycle power to the drive and check operation again.
• Initialize the drive using A1-03.
• If the problem continues, replace the drive.
The power supply was switched off
within 5 seconds after changing the
frequency reference when o2-05 is
set to 1.
Set up the external operation to allow at least 5 seconds pass before the power
supply is shut off and after changing the frequency reference while o2-05 is set
to 1.
LED Operator Display Fault Name
CPF08
EEPROM Communication Fault
EEPROM communications are not functioning properly.
Cause Possible Solution
Control circuit is damaged. Cycle power to the drive. If the problem persists, replace the drive.
LED Operator Display Fault Name
or CPF20 or
CPF21
One of the following faults occurred: RAM fault, FLASH memory error,
watchdog circuit exception,
clock error
•
RAM fault.
• FLASH memory error (ROM error).
• Watchdog circuit exception (self-diagnostic error).
• Clock error.
Cause Possible Solution
Hardware is damaged. Replace the drive.
5.4 Fault Detection
YASKAWA ELECTRIC TOEP C710606 26B YASKAWA AC Drive – J1000 Quick Start Guide
131
5
Troubleshooting
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