YASKAWA Varispeed G7 - Page 401

Protective and Diagnostic Functions
7-11
CPF04
Internal
A/D Err
CPU Internal A/D Converter Error
-
Try turning the power supply off
and on again.
The control circuit is damaged. Replace the Inverter.
• A short-circuit between +V, −V, a n d
AC terminals occurred.
• Overload in the control circuit ter-
minal.
• Make sure that incorrect wiring
has not been done.
• Check the resistance and wir-
ing for the frequency setting
potentiometer, etc. (Check that
the current for terminals +V and
–V is 20 mA or less.)
CPF05
External
A/D Err
CPU External A/D Converter Error
-
Try turning the power supply off
and on again.
The control circuit is damaged. Replace the Inverter.
• A short-circuit between +V, −V, a n d
AC terminals occurred.
• Overload in the control circuit ter-
minal.
• Make sure that incorrect wiring
has not been done.
• Check the resistance and wir-
ing for the frequency setting
potentiometer, etc. (Check that
the current for terminals +V and
–V is 20 mA or less.)
CPF06
Option
error
Option Board Connection Error
The option board is not connected
properly.
Turn off the power and insert the
board again.
The Inverter or option board is faulty.
Replace the option board or the
Inverter.
CPF07
RAM-Err
ASIC Internal RAM Fault
-
Try turning the power supply off
and on again.
The control circuit is damaged. Replace the Inverter.
CPF08
WAT-Er r
Watchdog Timer Fault
-
Try turning the power supply off
and on again.
The control circuit is damaged. Replace the Inverter.
CPF09
CPU-Err
CPU-ASIC Mutual Diagnosis Fault
-
Try turning the power supply off
and on again.
The control circuit is damaged. Replace the Inverter.
CPF10
ASIC-Err
ASIC Version Fault The Inverter control circuit is faulty Replace the Inverter.
CPF20
Option
A/D error
Communications Option Board A/
D Converter Error
The option board is not connected
properly.
Turn off the power and insert the
board again.
The option board's A/D converter is
faulty.
Replace the Communications
Option Board.
CPF21
Option
CPU down
Communications Option Board
Self Diagnostic Error
Communications Option Board fault. Replace the option board.
CPF22
Option
Type Err
Communications Option Board
Model Code Error
Table 7.1 Fault Displays and Processing (Continued)
Display Meaning Probable Causes Corrective Actions