Yaskawa V1000-Series Option SI-EP3/V PROFINET - Manual (Page 59)

YASKAWA TOEP YEACOM 06A V1000 Option PROFINET SI-EP3/V Installation Manual 59
11 Troubleshooting
11 Troubleshooting
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Drive-Side Error Codes
Drive-side error codes appear on the drive digital operator. Causes of the errors and
corrective actions are listed in Table 14 . For additional error codes that may appear on the
drive digital operator, refer to the drive Technical Manual available at
http://www.yaskawa.com.
■ Faults
Both bUS (Option Communication Error) and EF0 (External Fault Input from the option)
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?
• Is the communication line properly connected to the option? Is it loose?
• Is the controller program working? Has the controller/PLC CPU stopped?
• Did a momentary power loss interrupt communications?
Table 14 Fault Display and Possible Solutions
LED Operator Display Fault Name
bUS
Option Communication Error.
After establishing initial communication, the connection was lost.
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 the option 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.