162
( Carrier Frequency Option )
3.Replace the cooling fan
Motor Overheat 1
The temperature
signal from motor
temperature sensor
via analog input
terminal A1
(E3-01=20) exceeded
the overheat
detection level of the
drive.
1. Incorrect motor
temperature input (terminal
MT) wiring
2. Fault on the machinery
(e.g., machinery is locked up)
3. Motor overheat
1. Check the load, acceleration /
deceleration time and cycle time
a. Reduce the load
b. Increase C1-00 to C1-03
(Acc./Dec. Time) settings
2. Adjust d1-02 to d1-09 (V/F
Characteristics)
Note: If the d1-02 and d1-09 are
set too low, the tolerance at low
speed will be reduced.
3.a. Check the setting for motor
rated current. Set d1-00 as per
the data written on the motor
plate.
b. Check if the motor cooling is
working properly.
1. The load is too heavy
2. The acceleration and
deceleration times are too
short
3. The motor is driven below
the rated speed with a high
load
4. Incorrect setting in P1-00
(Motor Protection Function
Selection) when running a
special motor
5. The voltage determined by
the V/F is too high
6. d2-00 (Motor Rated
Current ) setting incorrect
7. The base frequency is set
too low
8. Use one drive to run
multiple motors
9. The electrical thermal
protection characteristics do
not match the motor
overload characteristics.
1. Check loading capacity
» Reduce the load
2. Confirm acceleration and
deceleration times
»Increase C1-00 to C1-03
parameter settings
3. »Reduce the load
» Increase the speed
» Either increase the motor
capacity or use a special-purpose
motor if the motor needs to
operate at low speeds
4. Set P1-00 to 2.
5. Adjust d1-02 to d1-09 settings
(V/F Characteristics)
Note: If d1-02 to d1-09 settings
are too low, load tolerance at low
speeds will be reduced
6.Confirm the motor rated
current
» Set d2-00 (Motor Rated
Current ) according to the motor
nameplate
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