IACDRIVE I5000 Series Operation Manual page 86

Over-voltage when
OV1
acceleration
Over-voltage when
OV2
deceleration
Over-voltage
OV3 when constant
speed running
DC bus
UV
Under-voltage
OL1 Motor overload
OL2 Inverter overload
SPI Input phase failure
1. Dec time is too short and
regenerative energy from the
motor is too large.
2. Input voltage is too high.
1. Open phase occurred with
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.
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.01)
4. Sudden change of load.
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. Open-phase occurred in
power supply.
2. Momentary power loss
occurred.
3. Wiring terminals for input
84
1. Increase Dec time or
connect braking resistor
2. Decrease input
voltage within
specification.
Inspect the input power
supply or wiring.
1. Select variable
frequency motor.
2. I5000ck and adjust V/F
curve.
3. I5000ck and adjust
PB.01
4. I5000ck the load.
1. Increase Acc/Dec
time or select bigger
capacity inverter.
2. I5000ck and adjust V/F
curve.
3. Select bigger capacity
inverter.
I5000ck the wiring,