Yaskawa E7 Drive User Manual - Manual (Page 139)

Diagnostic & Troubleshooting 6 - 3
CPF04
Internal A/D Err
CPU Internal A/D Converter Fault
Noise or spike on the control
circuit input terminals
Perform a factory initialization
Cycle power off and on to the
Drive
Replace the control board
CPF05
External A/D Err
CPU External A/D Converter Fault
Noise or spike on the control
circuit input terminals
Perform a factory initialization
Cycle power off and on to the
Drive
Replace the control board
CPF07
RAM-Err
ASIC Internal RAM Fault
(RAM)
- - -
Cycle power off and on to the
Drive
Control circuit damage Replace the Drive
CPF08
WAT-Err
Watchdog Timer Fault
(WAT)
- - -
Cycle power off and on to the
Drive
Control circuit damage Replace the Drive
CPF09
CPU-Err
CPU-ASIC Mutual Diagnosis Fault
(COY)
- - -
Cycle power off and on to the
Drive
Control circuit damage Replace the Drive
CPF10
ASIC-Err
ASIC Version Fault
(ASIC)
Control circuit damage Replace the Drive
CPF20
Option A/D Error
Option Card Fault
Option card connector connec-
tion fault Remove all inputs to the option
board
Option card A/D converter
fault
Perform a factory initialization
Cycle power off and on to the
Drive
Replace the option board
Replace the Control board
CPF21
Option CPU Down
Self-diagnosis Fault of Communication
Option Card
Noise or spike on the commu-
nication line, defective option
board
Perform a factory initialization
Cycle power off and on to the
Drive
Replace the option board
Replace the control board
CPF22
Option Type Err
Communication Option Card Code Number
Fault
Unrecognizable option board
is connected to the control
board
Remove any option boards
Cycle power off and on to the
Drive
Perform a factory initialization
Replace the option board
Replace the control board
Table 6.1 Fault Displays and Processing
Digital
Operator Display
Description Cause Corrective Action
TM_E7_01_07182008.book Page 3 Wednesday, July 23, 2008 2:35 PM