CHV100 Series Close Loop Vector Control Inverter
.112.
Fault Code
Fault Type
Reason
Solution
input power supply are
loose.
4
．
Voltage fluctuations in
power supply are too large.
OL1
Motor overload
1. Motor drive heavy load
at low speed for a long
time.
2. Improper V/F curve
3. Improper motor
’
s
overload protection
threshold (PB.03)
4. Sudden change of load.
1. Select variable
frequency motor.
2. Check and adjust V/F
curve.
3. Check and adjust
PB.03
4. Check the load.
OL2
Inverter overload
1. Load is too heavy or
Acc/Dec time is too short.
2. Improper V/F curve
3. Capacity of inverter is
too small.
1. Increase Acc/Dec time
or select bigger capacity
inverter.
2. Check and adjust V/F
curve.
3. Select bigger capacity
inverter.
SPI
Input phase
failure
1
．
Open-phase occurred in
power supply.
2
．
Momentary power loss
occurred.
3. Wiring terminals for
input power supply are
loose.
4
．
Voltage fluctuations in
power supply are too large.
5
．
Voltage balance
between phase is bad.
Check the wiring,
installation and power
supply.
SPO
Output phase
failure
1. There is a broken wire in
the output cable
2. There is a broken wire in
the motor winding.
Check the wiring and
installation.
