LED 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
147.
• If the problem continues, replace the drive.
LED Operator Display Fault Name
CPF23
PWM Feedback Fault
PWM feedback error.
Cause Possible Solution
Hardware is damaged. Replace the drive.
LED Operator Display Fault Name
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.
LED Operator Display Fault Name
EF0
MEMOBUS/Modbus Communication External Fault
An external fault condition is present.
Cause Possible Solution
An external fault was received from
the PLC with other than
H5-04 = 3
“alarm only” (the drive continued
to run after external fault).
•
Remove the cause of the external fault.
• Remove the external fault input from the PLC.
Problem with the PLC program. Check the PLC program and correct problems.
LED Operator Display Fault Name
EF1
External Fault (input terminal S1)
External fault at multi-function input terminal S1.
EF2
External Fault (input terminal S2)
External fault at multi-function input terminal S2.
EF3
External Fault (input terminal S3)
External fault at multi-function input terminal S3.
EF4
External Fault (input terminal S4)
External fault at multi-function input terminal S4.
EF5
External Fault (input terminal S5)
External fault at multi-function input terminal S5.
Cause Possible Solution
5.4 Fault Detection
132
YASKAWA ELECTRIC TOEP C710606 26B YASKAWA AC Drive – J1000 Quick Start Guide
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