Yaskawa Modbus TCP/IP Installation - Manual (Page 46)

9 Troubleshooting
46 YASKAWA ELECTRIC TOBP C730600 57B 1000-Series Option SI-EM3 Installation Manual
■ Minor Faults and Alarms
LED Operator Display Fault Name
oFC00
Option Card Connection Error (CN5-C)
Non-compatible option is connected.
Cause Possible Solution
Non-compatible option
connected to the drive.
Connect the correct option to CN5-A.
LED Operator Display Fault Name
oFC02
Option Card Fault (CN5-C)
Option flash write mode.
Cause Possible Solution
Options AI-A3 or DI-A3
are connected to the
CN5-B port with an
option connected to CN5-
A.
• Only one type of AI-A3, DI-A3 or SI-†† option can be connected to the drive.
• The SI-EM3 option can only be connected to CN5-A
LED 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, there is a short
circuit, or improper
connection
Check for wiring errors:
• Correct the wiring
• Remove ground shorts and reconnect loose wires
YES
Programming error on the
master side
Check communications at start-up and correct programming errors.
Communication circuitry
is damaged. • Perform a self-diagnostics check
• Replace the drive if the fault continues to occur
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