7 Troubleshooting
36
YASKAWA ELECTRIC
TOBP C730600 86F YASKAWA AC Drive Option SI-T3 Installation Manual
A data error occurred due to
electric interference
• Counteract noise in the control circuit, main circuit, and ground wiring.
• If a magnetic contactor is identified 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.
• Counteract noise in the master controller (PLC).
The option is not properly
connected to the drive
Reinstall the option.
Option is damaged.
If there are no problems with the wiring and the error continues to occur, replace the
option.
Keypad Display
Fault Name
E5
MECHATROLINK Watchdog Timer Error
The watchdog has timed out.
Cause
Possible Solution
Data has not been received
from the PLC, triggering the
watchdog timer.
Check the MECHATROLINK cable connection. Check for wiring and how to
counteract noise according to the following manuals by MECHATROLINK Members
Association.
MECHATROLINK-II Installation Guide, MMATDEP011
Keypad Display
Fault Name
EF0
Option Card External Fault
The alarm function for an external device has been triggered.
Cause
Possible Solution
An external fault was
received from the PLC.
1. Remove the cause of the external fault.
2. Reset the external fault input from the PLC.
Problem with the PLC
program
Check the PLC program.
Keypad Display
Fault Name
oFA00
Option Card Connection Error (CN5-A)
Option is not properly connected.
Cause
Possible Solution
The option card installed
into port CN5-A is
incompatible with the drive.
• Connect the option to the correct option port.
Note: PG option cards are supported by option ports CN5-B and CN5-C only.
• When an option is installed to the energy-saving unit, check the option software
version is 6105 or later.
Keypad Display
Fault Name
oFA01
Option Card Fault (CN5-A)
Option is not properly connected.
Cause
Possible Solution
The option connected to
option port CN5-A was
changed during run.
De-energize the drive and plug the option into the drive according to
.
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