Siemens MICROMASTER 411 - Page 83

Issue 03/01 6 Troubleshooting
MICROMASTER 411 & COMBIMASTER 411 Operating Instructions
6SE6400-5CA00-0BP0
83
F0020 Mains Phase Missing OFF2
Possible Causes
Fault occurs if one of the three input phases are missed while the pulses are enabled and drive is
loaded
Diagnose & Remedy
Check the input wiring of the mains phases
F0021 Earth fault OFF2
Possible Causes
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 & FX, GX)
F0022 Powerstack fault OFF2
Possible Causes
That hardware fault (r0947 = 22 and r0949 = 1) caused by the following events:
(1) DC-link overcurrent = short circuit of IGBT
(2) Short circuit of chopper
(3) Earth fault
(4) I/O board is not properly inserted
 Frame sizes A to C (1),(2),(3),(4)
 Frame sizes D to E (1),(2),(4)
 Frame size F (2),(4)
Since all these faults are assigned to one signal on the power stack, it is not possible to establish which
one actually occurred.
MM440 Frame size FX & GX:
 UCE failure was detected, when r0947 = 22 and fault value r0949 = 12 or 13 or 14, depending on
UCE.
 I2C bus read out error, when r0947 = 22 and fault value r0949 = 21 (The power has to be switched
OFF/ON).
Diagnose & Remedy
Check the I/O board. It has to be fully pressed home.
F0023 Output fault OFF2
Possible Causes
One motor phase is disconnected
F0030 Fan has failed OFF2
Possible Causes
Fan no longer working
Diagnose & Remedy
 Fault cannot be masked while options module (AOP or BOP) is connected
 Need a new fan
F0035 Auto restart after n OFF2
Possible Causes
Auto restart attempts exceed value of P1211
F0041 Motor Data Identification Failure OFF2
Possible Causes
Motor data identification failed.
Fault value = 0: Load missing
1: Current limit level reached during identification.
2: Identified stator resistance less than 0.1 % or greater than 100 %.
3: Identified rotor resistance less than 0.1 % or greater than 100 %.
4: Identified stator reactance less than 50 % and greater than 500 %