7
-4
Motor Overheating Alarm
The Inverter will stop or will continue
to operate according to the setting of
L1-03.
The motor has overheated.
Check the size of the load and the
length of the acceleration, deceler-
ation and cycle times.
Check the V/f characteristics.
Check the motor temperature
input on terminals A1 and A2.
Motor Overheating Fault
The Inverter will stop according to the
setting of L1-04.
The motor has overheated.
Check the size of the load and the
length of the acceleration, deceler-
ation and cycle times.
Check the V/f characteristics.
Check the motor temperature
input on terminals A1 and A2.
Motor Overload
The motor overload protection func-
tion has operated based on the internal
electronic thermal value.
The load is too heavy. The accelera-
tion time, deceleration time and cycle
time are too short.
Check the size of the load and the
length of the acceleration, deceler-
ation and cycle times.
The V/f characteristics voltage is too
high or too low.
Check the V/f characteristics.
The Motor Rated Current (E2-01) is
incorrect.
Check the Motor Rated Current
(E2-01).
Inverter Overload
The Inverter overload protection func-
tion has operated based on the internal
electronic thermal value.
The load is too heavy. The accelera-
tion time, deceleration time and cycle
time are too short.
Check the size of the load and the
length of the acceleration, deceler-
ation and cycle times.
The V/f characteristics voltage is too
high or too low.
Check the V/f characteristics.
The Inverter capacity is too low.
Replace the Inverter with one that
has a larger capacity.
Overtorque Detected 1
There has been a current greater than
the setting in L6-02 for longer than the
setting in L6-03.
-
• Make sure that the settings in
L6-02 and L6-03 are appropri-
ate.
• Check the mechanical system
and correct the cause of the
overtorque.
High-slip Braking OL
The output frequency did not change
for longer than the time set in N3-04.
The inertia returned to the load is too
large.
• Make sure the load is an inertial
load.
• Set the system so that the decel-
eration time that does not pro-
duce 0 V is 120 s or less.
Undertorque Detected 1
There has been a current less than the
setting in L6-02 for longer than the
setting in L6-03.
-
• Make sure that the settings in
L6-02 and L6-03 are appropri-
ate.
• Check the mechanical system
and correct the cause of the
overtorque.
Table 7.1 Fault Displays and Processing (Continued)
Display
Description
Probable Causes
Corrective Actions
