INVT BPD1K5TNAC User Manual

BPD series PV pumping inverter Fault diagnosis and solution
48
Fault
code
Fault type
Possible cause
Solutions
UV
Bus undervoltage
1. The voltage of the power
supply is too low.
2. The overvoltage stall
protection is not open.
1. Check the input power of the
supply line.
2. Check the setting of related
function codes.
OL1
Motor overload
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. Check the power of the supply
line.
2. Reset the rated current of the
motor.
3. Check the load and adjust the
torque lift.
OL2
Inverter overload
1. The acceleration is too fast.
2. The rotating motor is reset.
3. The voltage of the power
supply is too low.
4. The load is too heavy.
5. The motor power is too
small.
1. Increase the ACC time.
2. Avoid the restarting after
stopping.
3. Check the power of the supply
line.
4. Select an inverter with bigger
power.
5. Select a proper motor.
SPI
Input phase loss
Phase loss or fluctuation of
input R,S,T
1. Check input power.
2. Check installation distribution.
SPO
Output phase loss
U,V,W phase loss output (or
serious asymmetrical three
phase of the load)
1. Check the output distribution.
2. Check the motor and cable.
OH1
Rectifier overheat
1. Air duct jam or fan damage
2. Ambient temperature is too
high.
3. The time of overload
running is too long.
1. Dredge the wind channel or
change the fan.
2. Decrease the environment
temperature.
OH2
IGBT overheat
EF
External fault
SI external fault caused by
actions of input terminals
Check the external device input.
CE
485 Communication
error
1. The baud rate setting is
incorrect.
2. Fault occurs to the
communication wiring.
1. Set proper baud rate.
2. Check the communication
connection distribution
3. Set proper communication

INVT BPD1K5TNAC Specifications

General

Brand	INVT
Model	BPD1K5TNAC
Category	Inverter
Language	English