
13 Troubleshooting
62
YASKAWA ELECTRIC
SIEP C730600 92A YASKAWA AC Drive Option SI-EN3 Technical Manual
Minor Faults and Alarms
Digital Operator Display
Fault Name
oFC00
Option Fault (CN5-C)
Non-compatible option is connected.
Cause
Possible Solution
The option card installed into port CN5-C is
incompatible with the drive.
Connect the option to the correct option port.
Note: AI-A3, DI-A3, and communication options are not supported by option port CN5-C.
Digital Operator Display
Fault Name
oFC02
Option Fault
Option Flash write mode.
Cause
Possible Solution
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.
Digital Operator Display
Minor Fault Name
CALL
Serial communication transmission error
Communication is not established.
Cause
Possible Solution
Minor Fault
(H2-
= 10)
Communication wiring is faulty.
• Check for wiring errors.
• Correct the wiring.
YES
An existing short circuit or communications
disconnection
Check disconnected cables and short circuits and repair as needed.
Programming error on the master side.
Check communications at start-up and correct programming errors.
Communication circuitry is damaged.
• Perform a self-diagnostics check
• If the problem continues, replace either the control board or the
entire drive. For instructions on replacing the control board, contact
Yaskawa or your nearest sales representative.
Termination resistor of the MEMOBUS/Modbus
communications is not enabled.
Set DIP switch S2 to the ON position to enable the termination resistor
on a drive located at the end of a network line.
Digital Operator Display
Minor Fault Name
CyPo
Cycle Power to Active Parameters
Comm. Option Parameter Not Upgraded
Cause
Possible Solution
Minor Fault
(H2-
= 10)
Drive is not compatible with the option software
version.
Turn off the power and upgrade the communication option parameters.
Note: An alarm is triggered when the option software version is earlier
or an incompatible option is installed to the drive.
YES
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