YASKAWA CR700

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6.4 Fault

344 YASKAWA SIEPC71061723A YASKAWA AC Drive CR700 Technical Manual

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 setting and remove the cause of the

fault.

Note:

• This fault is detected when the terminal is assigned to H2-01 to H2-05 = 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 setting and remove the cause of the

fault.

Note:

• This fault is detected when the terminal is assigned to H2-01 to H2-05 = 67 [MFDO Function Select = Comparator2].

• Do a Fault Reset to clear the fault.

• Set the stopping method for this fault in H2-35 [CP2 Protection Selection].

Code Name Causes Possible Solutions

CPF00 to

CPF03, CPF07

to CPF08,

CPF11 to

CPF14, CPF16

to CPF24, and

CPF26 to

CPF39

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 switched off while the

parameter Write command was entered from a

communications option card.

Set A1-03 = 2220 [Initialize Parameters = 2-Wire initialization]

and initialize the drive.

An EEPROM peripheral circuit error occurred. • Re-energize the drive and check if the fault still remains.

• If the fault stays, replace the control board or the drive. For

instructions on replacing the control board, contact Yaskawa or

your nearest sales representative.

Note:

• Detected 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.

Code Name Causes Possible Solutions

CPF25 Terminal Board not Connected

The terminal board is not correctly connected to the

drive.

1. De-energize the drive.

2. Correctly connect the terminal board to the drive.

3. Re-energize the drive.

Note:

Do a Fault Reset to clear the fault.

Code Name Causes Possible Solutions

dEv Speed Deviation

The load is too heavy. Decrease the load.

Acceleration and deceleration times are set too

short.

Increase the values set in C1-01 to C1-08 [Acceleration/

Deceleration Time].

The dEv detection level settings are incorrect. Adjust F1-10 [Speed Deviation Detection Level] and F1-11

[Speed Deviation Detect DelayTime].

The load is locked up. Examine the machine.

The holding brake is stopping the motor. Release the holding brake.

Note:

• The drive detects this error if the difference between the detected speed and the speed reference is more than the setting of F1-10 for longer than F1-11.

• Do a Fault Reset to clear the fault.

• If the drive detects this error, the drive will operate the motor as specified by the stopping method set in F1-04 [Speed Deviation Detection Select].

Code Name Causes Possible Solutions

MECHATROLINK Watchdog

Timer Err

The drive detected a watchdog circuit exception

while it received data from the controller.

Examine the MECHATROLINK cable connection. If this error

occurs frequently, examine the wiring and decrease the effects of

electrical interference as specified by these manuals:

• MECHATROLINK-II Installation Guide (MECHATROLINK

Members Association, manual number MMATDEP011)

• MECHATROLINK-III Installation Manual

(MECHATROLINK Members Association, publication