LiteOn EVO 6800 Series - Page 139

136
Keypad
Display
Fault Name
Cause
Possible Solution
Heatsink temperature over
90 to 100°C
(Overheat level is
determined by rating of the
drive)
2. Internal cooling fan stopped
operating
3. Bad air flow due to
insufficient room.
a. Improve the air flow inside the
enclosure panel
b. Install an air conditioner or fan to
cool the environment
c. Remove any possible source of heat
2. Measure the output current
a. Reduce the load
b. Lower setting in C6-00 ( Carrier
Frequency Option )
3.Replace the cooling fan
oH1
Motor Overheat
The temperature signal
from motor temperature
sensor via the terminal MT
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. Correct the wiring for terminal MT.
2. Check the machinery status
3. Check the load, acceleration /
deceleration time and cycle time
a. Reduce the load.
b. Increase C1-00 to C1-07 (Acc./Dec.
Time) settings
c. Adjust d1-02 to d1-11 (V/F
Characteristics)
oL
Mechanical Weakening
Detection for Overtorque
Overtorque in the
conditions set to P6-06
Overtorque in the conditions
set to P6-06
Check the condition of mechanical
weakening
oL1
Motor Overload
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
1. Check loading capacity
» Reduce the load
2. Confirm acceleration and
deceleration times
»Increase C1-00 to C1-07 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 d1-11 settings (V/F
Characteristics)
Note: If d1-02 to d1-11 settings are
too low, load tolerance at low speeds
will be reduced