YASKAWA
SIEP C730600 0E YAI Modbus TCP/IP Technical Manual
51
10
Troubleshooting
◆
Drive-Side Error Codes
Drive-side error codes appear on the drive keypad.
lists causes of the errors and possible
corrective actions. Refer to the drive Technical Manual for additional error codes that may appear on the drive
keypad.
■
Fault
Both
bUS [Option Communication Error]
and
EF0 [Option Card External Fault]
can appear as a fault. When a
fault occurs, the keypad ALM LED stays lit. When an alarm occurs, the ALM LED flashes.
If communication stops while the drive is running, use these questions as a guide to help remove the fault:
•
Did you correctly connect the Modbus TCP/IP
TM
communication line to the option?
•
Is the communication line properly connected to the option? Is it loose?
•
Is the PLC program working? Is the controller/PLC CPU stopped?
•
Did a momentary power loss interrupt communications?
Code
Name
Causes
Possible Solutions
bUS
Option Communication Error
The drive did not receive a signal from the
controller.
The communications cable wiring is incorrect.
•
Check for wiring errors.
•
Correct the wiring.
An existing short circuit or communications
disconnection
Check disconnected cables and short circuits and repair as needed
A data error occurred due to electric interference
•
Prevent noise in the control circuit, main circuit, and ground
wiring.
•
If you identify a magnetic contactor as a source of noise,
install a surge absorber to the contactor coil.
•
Use only recommended cables or other shielded line. Ground
the shield on the controller side or the drive input power side.
•
Separate all communication wiring from drive power lines.
Install an EMC noise filter to the drive power supply input.
•
Decrease the effects of electrical interference from the
controller.
Option is damaged
If there are no problems with the wiring and the error continues to
occur, replace the option.
Connection Time-out
The PLC needs to communicate with the option within the time-
out period set by
F7-16
.
Duplicate IP Address
Check if the option shares an IP address with at least one other
node. Make sure that every node on the network has a unique IP
address.
EF0
Option Card External Fault
The option received an external fault from the
controller.
1.
Find the device that caused the external fault and remove the
caus.
2.
Clear the external fault input from the controller.
A programming error occurred on the controller
side.
Examine the operation of the controller program.
oFA00
Option Not Compatible with Port
The option connected to connector CN5-A is not
compatible.
Connect the option to the correct connector.
•
Use connector CN5-A when you connect the option.
To use other options, refer to those option manuals.
oFA01
Option Card Fault (CN5-A)
The option connected to option port CN5-A was
changed during run.
1.
De-energize the drive.
2.
Connect the option to the correct option port.
oFA03, oFA04
Option Card Error (CN5-A)
A fault occurred in the option.
1.
De-energize the drive.
2.
Make sure that the option is correctly connected to the
connector.
3.
If the problem continues, replace the option.
oFA30 to
oFA43
Option Card Connection Error
(CN5-A)
A fault occurred in the option.
1.
De-energize the drive.
2.
Make sure that the option is correctly connected to the
connector.
3.
If the problem continues, replace the option.
oFb00
Option Not Compatible with Port
The option connected to connector CN5-B is not
compatible.
Connect the option to the correct connector.
•
Use connector CN5-A when you connect the option.
To use other options, refer to those option manuals.
oFb02
Option Fault
An option of the same type is already installed in
option port CN5-A, CN5-B, or CN5-C.
Connect the option to the correct option port.
