YASKAWA GA800 600 V Drive - Drive Faults and Solutions (Continued)

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18 Troubleshooting

YASKAWA TOEPC7106170VA GA800 600 V Drive Installation & Primary Operation 67

Code Name Causes Possible Solutions

Electrical interference caused a communication data

error.

• Examine the control circuit lines, main circuit lines, and ground

wiring, and decrease the effects of electrical interference.

• Make sure that a magnetic contactor is not the source of the

electrical interference, then use a Surge Protective Device if

necessary.

• Use only the recommended cables or other shielded line. Ground

the shield on the controller side or the drive input power side.

• Separate the communication wiring from drive power lines, and

install a noise filter to the input side of the power supply for

communication.

• Decrease the effects of electrical interference from the controller.

CF Control Fault

Motor parameters are set incorrectly Correctly set the motor parameters and do Auto-Tuning again.

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.

CP1 Comparator 1 Limit Fault

The monitor value set in H2-20 [Comparator 1

Monitor Selection] was in 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.

CP2 Comparator 2 Limit Fault

The monitor value set in H2-26 [Comparator 2

Monitor Selection] was not in 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.

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.

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.

dEv Speed Deviation

The load is too heavy. Decrease the load.

dWF1

EEPROM Memory DWEZ Data

Error

There is an error in the EEPROM peripheral circuit. • 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.

dWFL DriveWorksEZ Fault

There was a fault in the DriveWorksEZ program. Examine the DriveWorksEZ program and remove the cause of the

fault. This is not a drive fault.

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 number MMATDEP018)

EF0 Option Card External Fault

The communication option received an external fault

from the controller.