Yaskawa V1000-Series Option SI-EM3D/V Dual Port EtherNet Modbus TCP/IP Technical Manual - Manual (Page 45)

10 Troubleshooting
u Drive-Side Error Codes
Drive-side error codes appear on the drive digital operator. Causes of the errors and corrective actions are listed below. Refer
to the drive manual for additional error codes that may appear on the drive digital operator.
n Faults
Both bUS (Option Communication Error) and EF0 (Option Card External Fault) can appear as an alarm or as a fault. When a
fault occurs, the digital operator ALM LED remains lit. When an alarm occurs, the ALM LED flashes.
If communication stops while the drive is running, use the following questions as a guide to help remedy the fault:
• Is the option properly installed?
• Are the communication lines properly connected to the option? Are the wires loose?
• Is the controller program working? Has the controller/PLC CPU stopped?
• Did a momentary power loss interrupt communications?
Digital Operator Display Fault Name
bUS
Option Communication Error
• The connection was lost after establishing initial communication.
• Only detected when the Run command or frequency reference is assigned to the option (b1-01 = 3 or
b1-02 = 3).
Cause Possible Solution
Master controller (PLC) has stopped
communicating
• Check that power is supplied to the PLC
• Check that PLC is not in program mode
Communication cable is not connected
properly
• Check for faulty wiring
• Correct any wiring problems
A 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
• If a magnetic contactor is identified as a source of noise, install a surge absorber to the contactor coil
• Make sure the cable used meets requirements
• Make sure the option ground wire is connected between option FE terminal and the drive ground
terminal connected to earth ground
Option is damaged If there are no problems with the wiring and the error continues to occur, replace the option.
Digital Operator Display Fault Name
EF0
Option Card External Fault
The alarm function for an external device has been triggered.
Cause Possible Solutions
An external fault was received from the PLC
and F6-03 is set to a value other than 3.
• Remove the cause of the external fault.
• Remove the external fault input from the PLC.
Problem with the PLC program Check the PLC program and correct problems.
Digital Operator Display Fault Name
oFA00
Option Card Connection Error at Option Port CN5-A
The option card is incompatible with the drive.
Cause Possible Solution
Digital Operator Display Fault Name
oFA01
Option Card Fault
Option not properly connected
Cause Possible Solution
The option card connection is faulty
• Turn off the power and reconnect the option card.
• Check if the option card is properly plugged into the option port. Make sure the card is fixed properly.
10 Troubleshooting
YASKAWA SIEP YAICOM 17A V1000 Option Dual-Port Modbus TCP/IP SI-EM3D/V Technical Manual 45