Micromaster 420 Fault Messages - Siemens MICROMASTER 420 Operating Instructions Manual

6 Troubleshooting
6.3

MICROMASTER 420 fault messages

In the event of a failure, the inverter switches off and a fault code appears on the
display.
NOTE
To reset the fault code, one of three methods listed below can be used:
1. Cycle the power to the drive.
2. Press the
3. Via Digital Input 3 (default setting)
Fault Possible Causes
F0001 Motor power does not correspond
Overcurrent to the inverter power
Motor lead short circuit
Earth fault
F0002
DC-link voltage (r0026) exceeds
Overvoltage 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
F0003 Main supply failed
Undervoltage Shock load outside specified
limits
F0004 Ambient temperature outside of
Inverter Over- limits,
temperature Fan failure
F0005 Inverter overloaded
2
Inverter I t
Duty cycle too demanding
Motor power (P0307) exceeds
inverter power capability (P0206)
F0011
Motor overloaded
Motor Over- Motor data incorrect
2
temperature I t Long time period operating at
low speeds
F0041 Stator resistance measurement
Stator failure
resistance
measurement
failure
70
button on the BOP or AOP.
Diagnose & Remedy
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
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
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
Check the following:
1. Fan must turn when inverter is running
2. Pulse frequency must be set to default value
3. Air inlet and outlet points are not obstructed
Ambient temperature could be higher than
specified for the inverter
Check the following:
1. Load duty cycle must lie within specified limits
2. Motor power (P0307) must match inverter
power (P0206)
1. Check motor data
2. Check loading on motor
3. Boost settings too high
(P1310,P1311, P1312)
4. Check parameter for motor thermal time
constant
5. Check parameter for motor I
1. Check if the motor is connected to
the inverter
2. Check that the motor data has
been entered correctly
2
t warning level
MICROMASTER 420 Operating Instructions
6SE6400-5AA00-0BP0
Issue 04/02
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