LiteOn EVO 6800 Series - Page 140

137
Keypad
Display
Fault Name
Cause
Possible Solution
9. The electrical thermal
protection characteristics do
not match the motor overload
characteristics.
10. The electrical thermal relay
operates at the wrong level
11. Motor overheated by
overexcitation operations
12. Speed Search related
parameters are set incorrectly
13. Power supply phase loss
causes output current
oscillation.
6.Confirm the motor rated current
» Set d2-00 (Motor Rated Current )
according to the motor nameplate
7. Confirm the rated frequency
showed on the motor nameplate
»Set d1-04 (Base Frequency)
according to the motor nameplate
8. Set P1-00 (Motor Protection
Function Selection) to 0 (Disabled)
and install a thermal relay to each
motor
9. Confirm characteristics of the
motor
»Set P1-00 (Motor Protection
Function Selection) correctly
»Install an external thermal relay
10. Overexcitation increases the
motor loss
11. Adjust parameters related to
Speed Search
»Adjust the b3-01 (Speed Search
Operation Current ) setting
12. Check the power supply for phase
loss
oL2
Drive Overload
1. The load is too heavy
2. The acceleration and
deceleration times are too short
3. The voltage determined by
the V/F is too high
4. The drive capacity is too
small
5. The motor is driven below
the rated speed with a high load
6. Torque compensation is too
high
7. Speed Search related
parameters are set incorrectly
8. Power supply phase loss
causes output current
oscillation
1. Check loading capacity
» Reduce the load
2. Confirm acceleration and
deceleration times
»Increase C1-00 to C1-07 parameter
settings
3. 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
4. Use a larger drive
5. »Reduce the load at low speed
» Use a larger drive
» Set a lower value to C6-00 (Carrier
Frequency)
6. Check the torque compensation