Troubleshooting
6
6.4 Faults
YASKAWA ELECTRIC SIEP C710617 05F YASKAWA AC Drive GA700 Technical Manual 339
Code Name Causes Possible Solutions
CoF Current Offset Fault The drive starts operation while the
induced voltage stays in the motor
(during coasting to a stop or after fast
deceleration).
• Make a sequence that does not restart operation
when induced voltage stays in the motor.
• Set b3-01 = 1 [Speed Search at Start Selection =
Enabled].
• Use Speed Search from Fmax or Fref [H1-xx =
61, 62] to do a speed search through one of the
external terminals.
Note:
When controlling the PM motor, External Speed
Search commands 1 and 2 operate the same.
A drive hardware problem occurred. Replace the drive.
Note:
• The drive detects this error if the current offset value is more than the permitted setting range while the drive automatically adjusts the
current offset.
• Do a Fault Reset to clear the fault.
Code Name Causes Possible Solutions
CP1 Comparator 1 Limit Fault The monitor value set in H2-20
[Comparator 1 Monitor Selection] was
within the range of H2-21 [Comparator
1 Lower Limit] and H2-22 [Comparator
1 Upper Limit].
Examine the monitor value and remove the cause
of the fault.
Note:
• The drive detects this error when the terminal is assigned to H2-01 to H2-03 = 66 [MFDO Function Select = Comparator1].
• Do a Fault Reset to clear the fault.
• Set the stopping method for this fault in H2-33 [Comparator1 Protection Selection].
Code Name Causes Possible Solutions
CP2 Comparator 2 Limit Fault The monitor value set in H2-26
[Comparator 2 Monitor Selection] was
outside the range of H2-27 [Comparator
2 Lower Limit] and H2-28 [Comparator
2 Upper Limit].
Examine the monitor value and remove the cause
of the fault.
Note:
• The drive detects this error when the terminal is assigned to H2-01 to H2-03 = 67 [MFDO Function Select = Comparator2].
• Do a Fault Reset to clear the fault.
• Set the stopping method for this fault in H2-35 [Comparator2 Protection Selection].
Code Name Causes Possible Solutions
CPF00 to
CPF03,
CPF07 to
CPF08,
CPF11 to
CPF14,
CPF16 to
CPF24,
CPF26 to
CPF38, and
CPF40 to
CPF45
Control Circuit Error A drive hardware problem occurred. • Re-energize the drive.
• If the fault stays, replace the control board or the
drive. For information about replacing the
control board, contact Yaskawa or your nearest
sales representative.
Note:
• Do a Fault Reset to clear the fault.
• Fault trace is not available for these faults.
Code Name Causes Possible Solutions
CPF06 EEPROM Memory Data
Error
The drive power supply was de-
energized while a communication
option card entered a parameter Write
command.
Set A1-03 = 2220, 3330 [Initialize Parameters =
2-Wire Initialization, 3-Wire Initialization] and
initialize the drive.
An EEPROM peripheral circuit error
occurred.
• Re-energize the drive.
• If the fault stays, replace the control board or the
drive. For information about replacing the
control board, contact Yaskawa or your nearest
sales representative.
Note:
• The drive detects this error if there is an error in the data written to the EEPROM of the drive.
• Do a Fault Reset to clear the fault.
• Fault trace is not available for this fault.
To Next Page
Loading...
