CPF13
Watchdog Circuit Exception
Self-diagnostics problem.
CPF14
Control Circuit Fault
CPU error (CPU operates incorrectly due to noise, etc.)
CPF16
Clock Fault
Standard clock error.
CPF17
Timing Fault
A timing error occurred during an internal process.
CPF18
Control Circuit Fault
CPU error. Non-Maskable Interrupt (An unusual interrupt was triggered by noise,
etc.)
CPF19
Control Circuit Fault
CPU error (Manual reset due to noise, etc.)
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.
CPF22
A/D Conversion Fault
A/D conversion error.
CPF23
PWM Feedback Fault
PWM feedback error.
CPF24
Drive Capacity Signal Fault
Entered a capacity that does not exist. (Checked when the drive is powered up.)
Cause
Possible Solution
Hardware is damaged.
Replace the drive.
dEv
Speed Deviation (for Simple V/f with PG)
According to the pulse input (RP), the speed deviation is greater than the setting
in F1-10 for longer than the time set to F1-11.
dWFL
DriveWorksEZ Fault
dWAL
DriveWorksEZ Program Error Output
E5
SI-T3/V Watchdog Timer Error
The watchdog timed out.
Data has not been received from the
PLC, triggering the watchdog
timer.
Execute DISCONNECT or ALM_CLR, then issue a CONNECT command or
SYNC_SET command and proceed to phase 3. Refer to the SI-T3/V Technical
Manual for more details on troubleshooting.
5.2 Fault Detection
YASKAWA ELECTRIC TOEP C710606 47A YASKAWA AC Drive – V1000 Quick Start Guide
133
5
Troubleshooting