Troubleshooting - YASKAWA 1000 Series Technical Manual

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Troubleshooting

Drive-Side Error Codes
Table 19 lists the various option-related fault codes. Refer to the drive Technical Manual for further information about
fault codes.
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?
Digital Operator Display
Cause
Master controller (PLC) has stopped
communicating
Communication cable is not connected properly
A data error occurred due to noise
Option is damaged
Network power loss
Connection timeout
Duplicate MAC ID
Digital Operator Display
Cause
An external fault is being sent from the main
controller (PLC)
Problem with the PLC program
Digital Operator Display
Cause
Non-compatible option connected to drive port
CN5-A
Digital Operator Display
Cause
Problem with the connector between the drive and
option
YASKAWA ELECTRIC SIEP C730600 43B 1000-Series Option SI-N3 Technical Manual
Table 19 Fault Displays, Causes, and Possible Solutions
Option Communication Error
The connection was lost after establishing initial communication.
bUS
Only detected when the run command frequency reference is assigned to the option
(bl-01 = 3 or bl-02 = 3).
Check for faulty wiring.
Correct any wiring problems.
• 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.
If there are no wiring problems and the fault continues to occur, replace the option.
The power on the DeviceNet network cable is 0.
Verify power is available between option terminals V+ (red) and V- (black).
The option Expected Packet Rate (EPR) timer timed out.
Make sure that EPR time is set properly.
The option MAC ID and at least one other node have the same MAC ID.
Verify F6-50 is set properly.
External Fault Input from the option
EF0
The alarm function for an external device has been triggered.
• Remove the cause of the external fault
• Reset the external fault input from the PLC device
Check the program used by the PLC and make the appropriate corrections.
Non-Compatible Option connected to drive port CN5-A
oFA00
Option is not properly connected.
Use only compatible options. Connect the SI-N3 to CN5-A. For other option connections refer
to the Installation Manual for those options.
Option Fault (CN5-A)
oFA01
Option is not properly connected.
Turn the power off and check the connectors between the drive and option.
12 Troubleshooting
Fault Name
Possible Solution
Fault Name
Possible Solution
Fault Name
Possible Solution
Fault Name
Possible Solution
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