TECHTOP TD20 Series Product Manual page 92

TD20 Series VFD
Fault code Fault type
UV
Under-voltage
OL1 Motor overload
OL2 VFD overload
OL3 Electrical overload
SPI Input phase loss
SPO Output phase loss
running
1. The voltage of the power
DC bus supply is too low.
2. The overvoltage stall
protection is not open.
1. The voltage of the power
supply is too low.
2. The motor setting rated
current is incorrect.
3. The motor stall or load
transients is too strong.
1. The acceleration is too fast
2. Reset the rotating motor
3. The voltage of the power
supply is too low.
4. The load is too heavy.
5. Close loop vector control,
reverse direction of the code
panel and long low-speed
operation
The VFD will report overload
pre-alarm according to the set
value.
Phase loss or fluctuation of
input R,S,T
U,V,W phase loss input (or
Possible cause
-90-
Fault Tracking
Solutions
components.
3. Install the braking
components.
4. Check the setting of relative
function codes.
1. Check the input power of
the supply line.
2. Check the setting of relative
function codes.
1. Check the power of the
supply line
2. Reset the rated current of
the motor
3. Check the load and adjust
the torque lift
1. Increase the ACC time
2. Avoid the restarting after
stopping.
3. Check the power of the
supply line
4. Select an VFD with bigger
power.
5. Select a proper motor.
Check the load and the
overload pre-alarm point.
1. Check input power
2. Check installation
distribution
1. Check the output