Siemens MICROMASTER 440 Series - Page 74

International English 6 Troubleshooting
MICROMASTER 440 Operating instructions
6SE6400-5CA00-0BP0
73
Fault Possible Causes Diagnose & Remedy Reac-
tion
A0503
UnderVoltage
Limit
 Main supply failed
 Main supply (P0210) and consequently
DC-link voltage (R0026) below specified
limit (P2172).
Check main supply voltage (P0210). --
A0504
Inverter
OverTemperature
 Warning level of inverter heat-sink
temperature (P0614) is exceeded,
resulting in pulse frequency
 reduction and/or output frequency
reduction (depending on parametrization
in (P0610)
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
--
A0505
Inverter I
2
T
 Warning level exceeded, current will be
reduced if parameterized (P0610 = 1)
Check that duty cycle lies within specified limits --
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
--
A0510
Motor
OverTemperature
--
A0511
Motor
OverTemperature
I
2
T
 Motor overloaded.
 Load duty cycle too high.
Check the following:
1. P0611 (motor I
2
t time constant) should be set to
appropriate value
2. P0614 (Motor I
2
t overload warning level) should
be set to suitable level
--
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.
--
A0535
Braking Resistor
Hot
--
A0541
Motor Data
Identification
Active
 Motor data identification (P1910) selected
or running
--
A0600
RTOS Overrun
Warning
--
A0700
CB warning 1 see
CB manual for
details.
 CB (communication board) specific See CB user manual --
A0701
CB warning 2 see
CB manual for
details.
 CB (communication board) specific See CB user manual --
A0702
CB warning 3 see
CB manual for
details.
 CB (communication board) specific See CB user manual --
A0703
CB warning 4 see
CB manual for
details.
 CB (communication board) specific See CB user manual --
A0704
CB warning 5 see
CB manual for
details.
 CB (communication board) specific See CB user manual --
A0705
CB warning 6 see
CB manual for
details.
 CB (communication board) specific See CB user manual --
A0706
CB warning 7 see
CB manual for
details.
 CB (communication board) specific See CB user manual --
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