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9
Fault Diagnosis and Possible Solutions
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Drive-Side Error Codes
Drive-side error codes appear on the drive LED operator. Causes of the errors and corrective actions are listed in
that may appear on the LED operator screen, refer to the instruction manual for the drive.
Faults
■
bUS (CANopen Option Communication Error) and EF0 (External Fault Input from the CANopen Option) may appear as an alarm or a fault. When
a fault occurs, the digital operator LEDs remain lit. When an alarm occurs, the digital operator LEDs flash and the "ALM" light illuminates
If communication stops while the drive is running, check the following items:
• Is the CANopen Option properly installed?
• Is the communication line properly connected to the CANopen Option? Is it loose?
• Is the controller program working? Has the controller CPU stopped?
• Did a momentary power loss interrupt communications?
LED Operator Display
Cause
Master controller (PLC) has stopped communicating.
Communication cable is not connected properly.
A data error occurred due to noise.
CANopen Option is damaged.
CANopen Option is not properly connected to the drive.
LED Operator Display
Cause
An external fault is being sent from the upper controller (PLC).
Problem with the upper controller (PLC) program.
LED Operator Display
Cause
Non-compatible option connected to the drive.
LED Operator Display
Cause
Problem with the connectors between the drive and CANopen
Option.
LED Operator Display
Cause
CANopen Option hardware fault.
YASKAWA ELECTRIC SIEP C730600 24A V1000 Option CANopen Technical Manual
Table 6 Fault Display and Possible Solutions
CANopen Option Communication Error
bUS
After establishing initial communication, the connection was lost.
Only detected when the run command frequency reference is assigned to the option.
Check for faulty wiring.
⇒ Correct any wiring problems.
Check the various options available to minimize the effects of noise.
⇒ Take steps to counteract noise in the control circuit wiring, main circuit lines, and ground wiring.
⇒ If a magnetic contactor is identified as a source of noise, install a surge absorber to the contactor coil.
⇒ Make sure the cable used fulfills the CANopen requirements. Ground the shield on the controller side and on the
CANopen Option side.
⇒ If there are no problems with the wiring and the error continues to occur, replace the CANopen Option.
The connector pins on the CANopen Option are not properly seated with the connector pins on the drive.
⇒ Reinstall the CANopen Option
External Fault Input from CANopen Option
EF0
The alarm function for an external device has been triggered.
⇒ Remove the cause of the external fault.
⇒ Reset the external fault input from the upper controller (PLC) device.
⇒ Check the program used by the upper controller (PLC) and make the appropriate corrections.
CANopen Option Fault
oFA00
CANopen Option is not properly connected.
⇒ Connect an option that is compatible with the drive.
CANopen Option Fault
oFA01
CANopen Option is not properly connected.
⇒ Turn the power off and check the connectors between the drive and CANopen Option.
CANopen Option Fault
oFA03
CANopen Option self-diagnostics error.
⇒ Replace the CANopen Option.
9 Fault Diagnosis and Possible Solutions
Table
6. For additional error codes
Fault Name
Possible Solution
Fault Name
Possible Solution
Fault Name
Possible Solution
Fault Name
Possible Solution
Fault Name
Possible Solution
25
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