Yaskawa J1000 Compact Vector Control Drive - Manual (Page 135)

Digital Operator Display Fault Name
CPF18
Control Circuit Fault
CPU error. Non-Maskable Interrupt (An unusual interrupt was triggered by noise,
etc.)
Cause Possible Solution
Hardware is damaged. Replace the drive.
Digital Operator Display Fault Name
CPF19
Control Circuit Fault
CPU error (Manual reset due to noise, etc.)
Cause Possible Solution
Hardware is damaged. 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.
Cause Possible Solution
Control circuit is damaged.
• Cycle power to the drive. Refer to Diagnosing and Resetting Faults on page
162 .
• If the problem continues, replace the drive.
Digital Operator Display Fault Name
CPF23
PWM Feedback Fault
PWM feedback error.
Cause Possible Solution
Hardware is damaged. Replace the drive.
Digital Operator Display Fault Name
CPF24
Drive Capacity Signal Fault
Entered a capacity that does not exist. (Checked when the drive is powered up.)
5.2 Fault Detection
YASKAWA ELECTRIC TOEP C710606 47C YASKAWA AC Drive – V1000 Quick Start Guide 135
5
Troubleshooting