Yaskawa J1000 Compact V/f Control Drive - Manual (Page 131)

Digital 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.
Digital 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 a communications option
card).
• Cycle power to the drive and check operation again.
• Initialize the drive using A1-03.
• If the problem persists after initializing the drive, replace the drive.
Digital Operator Display Fault Name
CPF08
EEPROM Serial 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.
Digital 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.
Digital Operator Display Fault Name
CPF22
A/D Conversion Fault
A/D conversion error.
5.4 Fault Detection
YASKAWA ELECTRIC TOEP C710606 26D YASKAWA AC Drive – J1000 Quick Start Guide 131
5
Troubleshooting