LiteOn EVO 6800 Series - Page 142

139
Keypad
Display
Fault Name
Cause
Possible Solution
distributor for more information.
Uv2
Retain
PF
Input Phase Loss
Drive input power has a
large imbalance of voltage
between phases or has an
open phase
(Detected when P7-00=1)
1. Phase loss in the drive input
power
2. Drive input power terminals
has a loose wiring
3. Drive input power voltage
has an excessive fluctuation
4. The main circuit capacitors
are impaired
1. Check wiring for errors in the main
circuit drive input power
»Correct wiring
2. Make sure the terminals are
tightened correctly
»Apply the tightening torque as
showed in the manual
3. Confirm the voltage from the drive
input power
»Apply possible solutions for drive
input power stabilization
4. Check drive input power. If drive
input power seems normal but the
alarm continues to occur, replace
either the entire drive or the control
board. Contact the local distributor
for more information.
LF1
Output Phase Loss
Phase loss on the drive
output side
1. The output cable is not
connected
2. The motor winding is
impaired
3. The output terminal is loose
4. The rated current of the
motor being used is 5% less
than the drive rated current
5. An output transistor is
impaired
6. A single phase motor is
activating
1.Check the errors for wiring then
properly connect the output cable
»Correct the wiring
2.Check the resistance which located
between motor lines
»If the winding is impaired, replace
the motor
3.Use tightening torque which
showed in the manual in order to
fasten the terminal
4.Check motor capacities and the
drive
5.The drive cannot run a single phase
motor
LF2
Retain
FbH
PID Feedback High
1. Incorrect parameter settings
2. Incorrect PID feedback wiring
3. Feedback sensor malfunction
1. Reset b5-22 and b5-23
2. Correct the wiring
3. Check the sensor
FbL
PID Feedback Low
1. Incorrect parameter settings
2. Incorrect PID feedback wiring
3. Feedback sensor malfunction
1. Reset b5-12 and b5-13
2. Correct the wiring
3. Check the sensor
bUS
Retain