Omron SYSDRIVE 3G3FV - Page 348

8-6
Fault Display Probable causes and remediesMeaning
OPR
Oper Disconnect
Faulty Digital Operator
connection.
The Digital Operator
connection was broken during
Inverter operation. Detected
when the parameter is set as
follows: 02-06=1.
• Wiring cable is broken.
• The Digital Operator or Inverter contacts are faulty .
→ After disconnecting the connectors and then
connecting them again or cleaning the connec -
tors, restart the power supply.
• Parameter was set incorrectly.
→ Set 02-06 to 0.
• If the problem persists, replace the cables or
Inverter.
EFO
Opt External Flt
External fault
(Communications/option)
• An external fault was input from an Optional Com -
munications Card.
→ Reset the external fault from the Optional Com -
munications Card.
→ Remove the cause of the external fault input.
EF3
External Fault 3
External fault (Input terminal 3)
• An external fault was input from a multi-function in -
put.
EF4 External fault (Input terminal 4)
ut
.
→ Reset external fault in
p
uts to the multi
-
function
EF5 External fault (Input terminal 5)
→ Reset
external
fault
in uts
to
the
multi
-
function
inputs.
EF6 External fault (Input terminal 6)
in uts
.
→ Remove the cause of the external fault.
EF7 External fault (Input terminal 7)
→ Remove
the
cause
of
the
external
fault
.
EF8 External fault (Input terminal 8)
E-15
SI-F/G Com Err
SYSMAC BUS
communications error.
An error occurred in the
SYSMAC BUS
communications line,
disrupting communications.
• The communications line was broken, short-cir-
cuited, or wired in reverse.
→ Check
the communications line and correct the
trouble.
• Hardware on the Master end is faulty.
→ Check the Master and take necessary mea-
sures.
• Communications data was damaged due to noise.
→ Use twisted-pair cables for communications
lines and ground all the shields on the Master
end.
• The Optional Card was damaged.
→ If wiring is correct and if the problem persists,
replace the Optional Card.
Maintenance Operations Chapter 8