YASKAWA Varispeed G7 Series Instruction Manual page 430

Display Meaning
CPF03
EEPROM EEPROM Error
Error
CPF04
CPU Internal A/D Converter
Internal
Error
A/D Err
CPF05
CPU External A/D Converter
External
Error
A/D Err
CPF06
Option Board Connection Error
Option
error
CPF07
ASIC Internal RAM Fault
RAM-Err
CPF08
Watchdog Timer Fault
WAT-Err
CPF09 CPU-ASIC Mutual Diagnosis
CPU-Err Fault
CPF10
ASIC Version Fault
ASIC-Err
CPF20
Communications Option Board
Option
A/D Converter Error
A/D error
Table 7.1 Fault Displays and Processing (Continued)
Probable Causes
The Inverter power supply was shut off
while writing data to the Inverter con-
stants.
The control circuit is damaged.
The control circuit is damaged.
• A short-circuit between +V, −V, and
AC terminals occurred.
• Overload in the control circuit termi-
nal.
The control circuit is damaged.
• A short-circuit between +V, −V, and
AC terminals occurred.
• Overload in the control circuit termi-
nal.
The option board is not connected prop-
erly.
The Inverter or option board is faulty.
The control circuit is damaged.
The control circuit is damaged.
The control circuit is damaged.
The Inverter control circuit is faulty
The option board is not connected prop-
erly.
The option board's A/D converter is
faulty.
Protective and Diagnostic Functions
Corrective Actions
Try turning the power supply off
–
and on again.
Initialize the constant settings (A1-
03).
Replace the Inverter.
Try turning the power supply off
–
and on again.
Replace the Inverter.
• Make sure that incorrect wiring
has not been done.
• Check the resistance and wiring
for the frequency setting potenti-
ometer, etc. (Check that the cur-
rent for terminals +V and –V is
20 mA or less.)
Try turning the power supply off
–
and on again.
Replace the Inverter.
• Make sure that incorrect wiring
has not been done.
• Check the resistance and wiring
for the frequency setting potenti-
ometer, etc. (Check that the cur-
rent for terminals +V and –V is
20 mA or less.)
Turn off the power and insert the
board again.
Replace the option board or the
Inverter.
Try turning the power supply off
–
and on again.
Replace the Inverter.
Try turning the power supply off
–
and on again.
Replace the Inverter.
Try turning the power supply off
–
and on again.
Replace the Inverter.
Replace the Inverter.
Turn off the power and insert the
board again.
Replace the Communications
Option Board.
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