LiteOn EVO 6800 Series - Page 208

208
Keypad
Display
Fault Name
Cause
Possible Solution
triggered while the PID
feedback falls below the
level set to b5-12 for
longer than the time set
to b5-13.
malfunction
4. Incorrect feedback input
circuit
4. Contact the local distributor to
replace the board or the drive.
oH
Heatsink Overheat
Heatsink temperature
over 90 to 100°C
(Overheat level is
determined by rating of
the drive)
1. Ambient temperature is
too high
2. Internal cooling fan
stopped operating
3. Bad air flow due to
insufficient room.
1.Check the temperature
surrounding the drive
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 the C1-00 to C1-07
(Acc./Dec. Time) settings
c. Adjust d1-02 to d1-11 (V/F
Characteristics)
ot1
Overtorque Detection 1
The current has
exceeded the torque
level set to P6-01 for
longer than the time set
to P6-02
1. Incorrect parameter
settings
2. Malfunction on
machinery
1. Reset P6-01 and P6-02
2. Check machinery and load
status
ov
Overvoltage
Voltage in the DC bus
exceeded the
overvoltage detection
level
1. Drive input power has
surge voltage entering
2. Machinery output short
circuit
3. Ground fault in the
output circuit causes the
1. Install a DC link choke
Voltage surge can result from a
thyristor convertor and phase
advancing capacitor using the
same input power supply
2. Check the motor power cable,