6 Troubleshooting International English
MICROMASTER 440 Operating instructions
70 6SE6400-5CA00-0BP0
6.3 Fault messages
Fault Possible Causes Diagnose & Remedy Reac-
tion
F0001
OverCurrent
Motor power (P0307) does not
correspond to the inverter power (P0206)
Motor lead short circuit
Earth faults
Check the following:
1. Motor power (P0307) must correspond to inverter
power (P0206).
2. Cable length limits must not be exceeded.
3. Motor cable and motor must have no short-
circuits or earth faults
4. Motor parameters must match the motor in use
5. Value of stator resistance (P0350) must be
correct
6. Motor must not be obstructed or overloaded
Increase the ramp time
Reduce the boost level
Off2
F0002
OverVoltage
DC-link voltage (r0026) exceeds trip level
(P2172)
Overvoltage can be caused either by too
high main supply voltage or if motor is in
regenerative mode.
Regenerative mode can be cause by fast
ramp downs or if the motor is driven from
an active load.
Check the following:
1. Supply voltage (P0210) must lie within limits
indicated on rating plate .
2. DC-link voltage controller must be enabled
(P1240) and parameterized properly.
3. Ramp-down time (P1121) must match inertia of
load.
4. Required braking power must lie within specified
limits.
Note
Higher inertia requires longer ramp times; otherwise,
apply braking resistor.
Off2
F0003
UnderVoltage
Main supply failed.
Shock load outside specified limits.
Check the following:
1. Supply voltage (P0210) must lie within limits
indicated on rating plate.
2. Supply must not be susceptible to temporary
failures or voltage reductions.
Off2
F0004
Inverter Over
Temperature
Ventilation inadequate
Fan inoperative
Ambient temperature is too high.
Check the following:
1. Fan must turn when inverter is running
2. Pulse frequency must be set to default value
Ambient temperature could be higher than specified
for the inverter
Off2
F0005
Inverter I2T
Inverter overloaded.
Duty cycle too demanding.
Motor power (P0307) exceeds inverter
power capability (P0206).
Check the following:
1. Load duty cycle must lie within specified limits.
2. Motor power (P0307) must match inverter power
(P0206)
Off2
F0011
Motor Over
Temperature
Motor overloaded Check the following:
1. Load duty cycle must be correct
2. Motor nominal overtemperatures (P0626-P0628)
must be correct
3. Motor temperature warning level (P0604) must
match
Off1
F0012
Inverter temp.
signal lost
Wire breakage of inverter temperature
(heatsink) sensor
Off2
F0021
Earth fault
Fault occurs if the sum of the phase
currents is higher than
5 % of the nominal inverter current.
Note
This fault only occurs on inverters that have 3
current sensors. Frame sizes D to F
Off2
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