Siemens MICROMASTER 420 - MICROMASTER 420 Fault Codes; Table 6-2 MICROMASTER 420 Fault Codes

International English 6. TROUBLESHOOTING
94 MICROMASTER 420 Operating Instructions
6SE6400-5AA00-0BP0
6.3 MICROMASTER 420 fault codes
In the event of a failure, the inverter switches off and a fault code appears on the display.
Table 6-2 MICROMASTER 420 Fault Codes
Fault Code Description Possible Causes Diagnosis & Remedy
F0001 Overcurrent 1. Motor power does not
correspond to the inverter
power.
2. Motor lead short circuit
3. Earth fault
1. Check whether the motor power
corresponds to the inverter
power.
2. Check that the cable length limits
have not been exceeded.
3. Check motor cable and motor for
short-circuits and earth faults.
4. Check whether the motor
parameters correspond with the
motor being used.
5. Check the stator resistance
(P0350).
6. Increase the ramp-up-time
(P1120).
7. Reduce the boost set in (P1310),
(P1311) and (P1312).
8. Check whether the motor is
obstructed or overloaded.
F0002 Overvoltage Supply voltage out of tolerance
load is regenerating.
1. Check whether the supply voltage
is within the limits indicated on the
rating plate.
2. Check if dc-link voltage
controller (P1240) is enabled and
parameterized correctly.
3. Increase the ramp-down time
(P1121).
F0003 Undervoltage Mains supply removed when
inverter is running.
1. Check whether the supply voltage
is within the limits indicated on the
rating plate.
2. Check the supply is not subject to
temporary failures or voltage
reductions.
F0004 Inverter
Overtemperature
Ambient temperature outside of
limits,
Fan failure
1. Check that the integral fan rotates
when drive is running.
2. Check if pulse frequency is set to
default value.
3. Ambient temperature could be
higher than specified for the
inverter.
4. Check that air inlet and outlet
points are not obstructed.
F0005 Inverter I
2
T Inverter is overloaded 1. Check if load duty-cycle is within
specified limits.
2. Check that motor power
corresponds to inverter power
F0011 Motor Overtemperature
I
2
T
1. Motor overloaded.
2. Motor data incorrect.
3. Check parameter for motor
thermal time constant.
4. Check parameter for motor I
2
t
warning level.
5. Long time period operating at
low speeds
1. Check motor data.
2. Check loading on motor.
3. Boost settings too high (P1310,
P1311, P1312)
F0041 Stator resistance
measurement failure
Stator resistance measurement
failure
1. Check if the motor is connected to
the inverter
2. Check that the motor data has
been entered correctly.