Troubleshooting - YASKAWA PROFIBUS-DP SI-P3 Technical Manual

9 Troubleshooting

9 Troubleshooting

Drive-Side Error Codes
Drive-side error codes appear on the drive keypad.
Refer to the drive Technical Manual for additional error codes that may appear on the drive keypad.

Faults
Both bUS (Option Communication Error) and EF0 (Option Card External Fault) can appear as either an alarm or as a
fault. When a fault occurs, the keypad ALM LED remains lit. When an alarm occurs, the keypad ALM LED flashes.
Check the following items first when an error code occurs on the drive:
• Communication cable connections
• Make sure the option is properly installed to the drive
• Operation status of the controller program and controller CPU
• Did a momentary power loss interrupt communications?
Keypad Display
bUS
Cause
No signal was received from the PLC.
Faulty communications wiring
An existing short circuit or
communications disconnection
A data error occurred due to electric
interference
The option is not properly connected to
the drive.
Option is damaged.
Keypad Display
EF0
Cause
An external fault was received from the
PLC.
Problem with the PLC program.
Keypad Display
oFA00
Cause
The option card installed into port
CN5-A is incompatible with the drive.
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Table 18
Table 18 Fault Displays, Causes, and Possible Solutions
Option Communication Error
• After establishing initial communication, the connection was lost.
• Only detected when the run command frequency reference is assigned to the option
(bl-01 = 3 or bl-02 = 3).
• Check for faulty wiring.
• Correct any wiring problems.
Check disconnected cables and short circuits and repair as needed.
• Counteract noise in the control circuit, main circuit, and ground wiring.
• If a magnetic contactor is identified as a source of noise, install a surge absorber to the contactor coil.
• Use only recommended cables or other shielded line. Ground the shield on the controller side or the
drive input power side.
• Separate all communication wiring from drive power lines. Install an EMC noise filter to the drive
power supply input.
• Counteract noise in the master controller (PLC).
Reinstall the option.
If there are no problems with the wiring and the error continues to occur, replace the option.
Option Card External Fault
The alarm function for an external device has been triggered.
1. Remove the cause of the external fault.
2. Reset the external fault input from the PLC.
Check the PLC program.
Option Card Connection Error (CN5-A)
Option is not properly connected.
Connect the option to the correct option port.
Note: Connect the SI-P3 to CN5-A. For other option connections, refer to the Installation Manual for
those options.
YASKAWA ELECTRIC SIEP C730600 82D YASKAWA AC Drive Option SI-P3 Technical Manual
lists causes of the errors and possible corrective actions.
Fault Name
Possible Solution
Fault Name
Possible Solution
Fault Name
Possible Solution