Siemens MICROMASTER 430 - Page 82

6 Troubleshooting
MICROMASTER 430 Operating Instructions
6SE6400-5AC00-0BP0
81
Alarm Possible Causes Diagnose & Remedy
A0506
Inverter duty
cycle
Difference between heatsink and
IGBT junction temperature exceeds
warning limits
Check that duty cycle and shock loads lie within specified
limits
A0511
Motor Over-
Temperature
I
2
T
Ø Motor overloaded.
Ø Load duty cycle too high.
Independently of the kind of temperature determination
check:
1. P0604 motor temperature warning threshold
2. P0625 motor ambient temperature
If (P601 = 0 or 1) Check the following:
1. Check if name plate data are correct (if not perform quick
commissioning)
2. Accurate equivalent circuit data can be found by
performing motor identification (P1910=1).
3. Check if motor weight (P344) is reasonable. Change if
neccesary.
4. Via P626, P627, P628 the standard overtemperatures
can be changed, if the motor is nota Siemens standard
motor.
If (P601 = 2) Check the following:
1. Check if temperature shown in r35 is reasonable.
2. Check if the sensor is a KTY84 (other sensors are not
supported)
A0512
Motor
temperature
signal lost
Wire break to motor temperature
sensor. If a wire breakage is be
detected, temperature monitoring
switches over to monitoring with the
motor thermal model.
A0520
Rectifier Over-
Temperature
Warning level of rectifier heat-sink
temperature (P) is exceeded
Check the following:
1. Ambient temperature must lie within specified limits
2. Load conditions and duty cycle must be appropriate
3. Fan must turn when drive is running
A0521
Ambient Over-
Temperature
Warning level of ambient temperature
(P) is exceeded
Check the following:
1. Ambient temperature must lie within specified limits
2. Fan must turn when drive is running
3. fan intake air has to be without any resistance
A0523
Output fault
One phase of output is disconnected Warning can be masked.
A0541
Motor Data
Identification
Active
Motor data identification (P1910)
selected or running
A0590
Encoder
feedback loss
warning
Signal from Encoder lost and Inverter
has switched to sensorless vector
control
Stop inverter and then
1. Check encoder fitted. If encoder not fitted, set P400 = 0
and select SLVC mode (P1300 = 20 or 22)
2. Check connections between encoder and inverter
3. Check encoder not faulty (select P1300 = 0, run at fixed
speed, check encoder feedback signal in P66)
4. Increase encoder loss threshold in P492
A0600
RTOS Overrun
Warning
A0700
CB warning 1
CB (communication board) specific See CB user manual
A0701
CB warning 2
CB (communication board) specific See CB user manual
www.eltra-trade.com
+421 552 601 099
info@eltra-trade.com