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YASKAWA ELECTRIC
TOBP C730600 41E 1000-Series Option DO-A3 Installation Manual
7 Troubleshooting
7
Troubleshooting
◆
Unit-Side Error Codes
lists the various fault codes related to the option. Refer to the unit instruction manual
for further details on fault codes.
Check the following items first when an error code occurs on the unit:
• Are the cables connected properly and securely?
• Is the option is properly installed to the unit?
• Did a momentary power loss occur?
Table 8 Fault Displays, Causes, and Possible Solutions
Digital Operator Display
Fault Name
oFA01
Option Fault (CN5-A)
Option is not properly connected
Cause
Possible Solution
Option at unit port CN5-A was changed during
run.
Turn the power off and check the connectors between the unit
and option.
Digital Operator Display
Fault Name
oFb01
Option Fault (CN5-B)
Option is not properly connected
Cause
Possible Solution
Option at unit port CN5-B was changed during
run.
Turn the power off and check the connectors between the unit
and option.
Digital Operator Display
Fault Name
oFb02
Option Fault (CN5-B)
Two of the same options are connected simultaneously.
Cause
Possible Solution
Same type of option connected to ports
CN5-A and CN5-B.
Use only compatible options.
Digital Operator Display
Fault Name
oFC01
Option connection error at unit port CN5-C
Cause
Possible Solution
Option at unit port CN5-C was changed during
run.
Turn the power off and check the connectors between the unit
and option.
