Yaskawa R1000 Series Power Regenerative Unit - Manual (Page 92)

5.3 Fault Detection
92 YASKAWA ELECTRIC TOEP C710656 08B YASKAWA Power Regenerative Unit - R1000 Instruction Manual
Digital Operator
Display
Fault Name Details
CE
MEMOBUS/Modbus
Communication Error
Control data was not received for the CE detection time set to H5-09.
Cause Possible Solution
Faulty communications wiring or an existing
short circuit.
Check for faulty wiring.
• Correct the wiring.
• Check for disconnected cables and short circuits and repair as needed.
Communication data error occurred due to
noise.
Check the various options available to minimize the effects of noise.
• Counteract noise in the control circuit, main circuit, and ground wiring.
• Use only recommended cables or other shielded line. Ground the shield on the controller side
or the regenerative unit input power side.
• Ensure that other equipment such as switches or relays do not cause noise. Use surge
suppressors if required.
• Separate all communication wiring from drive power lines. Install an EMC noise filter to the
regenerative unit power supply input.
Digital Operator
Display
Fault Name Details
CoF Current Offset Fault
A fault occurred in adjustment of the automatic current offset when the power supply was turned
on.
Cause Possible Solution
An error occurred in the power supply detection
circuit.
Cycle the power supply and check operation.
If the fault occurs again, replace the board or regenerative unit. For information on board
replacement, consult with your Yaskawa representative or the nearest Yaskawa sales office.
Digital Operator
Display
Fault Name Details
, CPF00,
CPF01
<1>
Control Circuit Error A fault occurred in the control circuit.
to CPF11 to
CPF22
<1>
to CPF26 to
CPF35
Cause Possible Solution
There is a self-diagnostic error in the control
circuit.
• Cycle power to the regenerative unit.
• If the problem continues, replace the control board or the entire regenerative unit. Contact
Yaskawa or a Yaskawa representative for instructions on replacing the control board.
Connector on the operator is damaged. Replace the operator.
Digital Operator
Display
Fault Name Details
CPF02 A/D Conversion Error An A/D conversion error or control circuit error occurred.
Cause Possible Solution
Control circuit is damaged.
Cycle power to the regenerative unit.
If the problem continues, replace the control board or the entire regenerative unit. Contact
Yaskawa or a Yaskawa representative for instructions on replacing the control board.
Digital Operator
Display
Fault Name Details
CPF03
Control Board
Connection Error
Connection error between the control board and the regenerative unit
Cause Possible Solution
There is a connection error.
Turn off the power and check the connection between the control board and the regenerative unit.
If the problem continues, replace the control board or the entire regenerative unit. Contact
Yaskawa or a Yaskawa representative for instructions on replacing the control board.
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