Yaskawa 1000 Series Drive Option - DeviceNet Installation - Manual (Page 31)

YASKAWA ELECTRIC TOBP C730600 43C 1000-Series Option SI-N3 Installation Manual 31
8 Troubleshooting
8 Troubleshooting
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Drive-Side Error Codes
Table 8 lists the various fault codes related to the option. Refer to the drive Technical
Manual for further details on the fault codes.
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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 8 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 the 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 fault continues to occur, replace the option.
Network power loss
The power on the DeviceNet network cable is 0.
Verify power is available between option terminals V+ (red) and V- (black).
Connection timeout
The option Expected Packet Rate (EPR) timer timed out.
Make sure that EPR time is set properly.
Duplicate MAC ID
The option MAC ID and at least one other node have the same MAC ID.
Verify F6-50 is set properly. All MAC IDs must be unique.