9 Troubleshooting
YASKAWA ELECTRIC
SIEP C730600 23B V1000 Option PROFIBUS-DP Technical Manual
37
9
Troubleshooting
Drive-Side Error Codes
Drive-side error codes appear on the drive LED operator. Causes of the errors and corrective actions are listed in
. For additional error codes that may appear on the LED operator screen, refer to the V1000 Technical Manual.
Faults
bUS (PROFIBUS-DP Option Communication Error) and EF0 (External Fault Input from the PROFIBUS-DP 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 to resolve the fault:
• Is the PROFIBUS-DP Option properly installed?
• Is the communication line properly connected to the PROFIBUS-DP Option? Is it loose?
• Is the controller program working? Has the controller CPU stopped?
• Did a momentary power loss interrupt communications?
Table 17 Fault Display and Possible Solutions
LED Operator Display
Fault Name
bUS
PROFIBUS-DP 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 (b1-03
= 3 or b1-02 = 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
• 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
• Use cables recommended by Yaskawa, or another type of shielded line. Ground the shield on
the controller side and on the PROFIBUS-DP Option side
PROFIBUS-DP Option is damaged.
If there are no problems with the wiring and the error continues to occur, replace the
PROFIBUS-DP Option
LED Operator Display
Fault Name
EF0
External Fault Input from PROFIBUS-DP Option
The alarm function for an external device has been triggered
Cause
Possible Solution
An external fault is being sent from the upper
controller (PLC).
• Remove the cause of the external fault
• Reset the external fault input from the upper controller (PLC) device
Problem with the upper controller (PLC)
program.
Check the program used by the upper controller (PLC) and make the appropriate corrections
LED Operator Display
Fault Name
oFA00
PROFIBUS-DP Option Fault (Port A)
PROFIBUS-DP Option is not properly connected
Cause
Possible Solution
Non-compatible option connected to the drive.
Connect an option that is compatible with the drive
