Yaskawa SI-EP3 PROFINET Technical Manual - Manual (Page 46)

46 YASKAWA ELECTRIC SIEP C730600 69A 1000-Series Option SI-EP3 Technical Manual
10 Troubleshooting
10 Troubleshooting
 Drive-Side Error Codes
Table 29 lists the various fault codes related to the option. Further details on various faults can be found in the drive
instruction manual.
 Faults
Both bUS (Option Communication Error) and EF0 (External Fault Input from the option) can appear as either an alarm
or as a fault. When a fault occurs, the digital operator ALM LED remains lit. When an alarm occurs, the digital operator
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?
Table 29 Fault Displays, Causes, and Possible Solutions
Digital Operator Display Fault Name
bUS
Option Communication Error
The connection was lost after establishing initial communication.
Only detected when the run command frequency reference is assigned to the option
(bl-01 = 3 or bl-02 = 3).
Cause Possible Solution
Master controller (PLC) has stopped
communicating.
Check for faulty wiring.
Correct any wiring problems.
Communication cable is not connected
properly.
A data error occurred due to noise.
• Counteract noise in control circuit wiring, main circuit lines, and ground wiring.
• If a magnetic contactor is the noise source, install a surge absorber to the contactor coil.
• Use cables recommended by Yaskawa or another type of shielded line. Ground the shield on the
controller side and on the option side.
Option is damaged. If there are no wiring problems and the error continues to occur, replace the option.
Digital Operator Display Fault Name
EF0
External Fault Input from the option
The alarm function for an external device has been triggered.
Cause Possible Solution
An external fault is being sent from the
main controller (PLC). • Remove the cause of the external fault.
• Reset the external fault input from the PLC device.
Problem with the PLC program. Check the program used by the PLC and make the appropriate corrections.
Digital Operator Display Fault Name
oFA00
Non-Compatible Option connected to drive port CN5-A
Option is not properly connected.
Cause Possible Solution
Non-compatible option connected to
drive port CN5-A. Use only compatible options. Connect the SI-EP3 to CN5-A. For other option connections, refer to the
Installation Manual for those options.
Digital Operator Display Fault Name
oFA01
Option Fault (CN5-A)
Option is not properly connected.
Cause Possible Solution
Problem with the connector between the
drive and option.
Turn the power off and check the connectors between the drive and option.
Digital Operator Display Fault Name
oFA03
Option fault
Option self-diagnostics error
Cause Possible Solution
Option hardware fault Replace the option
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