Yaskawa 1000 Series Drive Option - DeviceNet Technical Manual - Manual (Page 73)

12 Troubleshooting
YASKAWA ELECTRIC SIEP C730600 43B 1000-Series Option SI-N3 Technical Manual 73
12 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?
Table 19 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.
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-N3 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.