7-5
Fault
display
Probable cause and remedyFault name and
meaning
%l3 Overtorque detection
(OL3)
There has been a current
or torque the same as or
greater than the setting
in n60 for overtorque
detection level and that
in n61 for overtorque
detection time. A fault
has been detected with
n59 for overtorque
detection function
selection set to 2 or 4.
•The mechanical system is locked or has a failure.
→ Check the mechanical system and correct the
cause of overtorque.
•The parameter settings were incorrect.
→ Adjust the n60 and n61 parameters according
to the mechanical system.
Increase the set values in n60 and n61.
gf Ground fault (GF)
The ground fault current
at the output of the
Inverter has exceeded
the rated output current
of the Inverter.
•A ground fault has occurred at the Inverter output.
→ Check the connections between the Inverter
and motor and reset the fault after correcting its
cause.
ef External fault (EF)
An external fault has
been input from a
multi-function input.
A multi-function input 1,
2, 3, or 4 set to 3 or 4
has operated. The EF
number indicates the
number of the
corresponding input (S2
to S5).
•An external fault was input from a multi-function
input.
→ Remove the cause of the external fault.
•The sequence is incorrect.
→ Check and change the external fault input
sequence including the input timing and NO or
NC contact.
f00 Digital Operator
transmission fault 1
(F00)
An initial memory fault
has been detected
•The internal circuitry of the Inverter has a fault.
→ Turn the Inverter off and on.
→ Replace the Inverter if the same fault occurs
again.
f01 Digital Operator
transmission fault 2
(F01)
A ROM fault has been
detected.
•The internal circuitry of the Inverter has a fault.
→ Turn the Inverter off and on.
→ Replace the Inverter if the same fault occurs
again.
Maintenance Operations Chapter
7
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