Alarms - Siemens micromaster 410 Operating Instructions Manual

6 Troubleshooting
6.4

Alarms

Alarm Possible Causes
Ø
A0501 Motor power does not
Current Limit
correspond to the inverter power
Ø
Motor leads are too long
Ø
Earth faults
A0502 Ø Overvoltage limit is reached.
Overvoltage
Ø
This warning can occur during
limit
ramp down, if the dc-link con-
troller is disabled (P1240 = 0).
A0503 Main supply failed
UnderVoltage
Limit
A0504 Warning level of inverter heat-sink
Inverter Over
temperature (P0614) is exceeded,
Temperature resulting in pulse frequency reduction
and/or output frequency reduction
(depending on parametrization in
(P0610)
A0505 Warning level exceeded, current will
2
Inverter I t be reduced if parameterized
(P0610 = 1)
A0506
Difference between heatsink and
Inverter duty IGBT junction temperature exceeds
cycle warning limits
Ø
A0511 Motor overloaded.
Motor Over
Ø
Load duty cycle too high.
Temperature
2
I t
A0600 Software problem
RTOS Overrun
Warning
Ø
A0910 Vdc max controller has been de-
Vdc-max activated
controller de-
Ø
Occurs if main supply voltage is
activated
permanently too high.
Ø Occurs if motor is driven by an
active load, causing motor to go
into regenerative mode.
Ø
Occurs at very high load inertias,
when ramping down.
A0911 Vdc max controller is active; so ramp-
Vdc-max down times will be increased
controller automatically to keep DC-link voltage
active (r0026) within limits
60
Diagnose & Remedy
Check the following:
1. Motor power (P0307) must correspond to
inverter power (r0206).
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. Motor must not be obstructed or overloaded
Ø
Increase the ramp-up-time.
Ø
Reduce the boost.
If this warning is displayed permanently, check
drive input voltage .
Check main supply voltage (P0210).
Check the following:
1. Ambient temperature must lie within
specified limits
2. Load conditions and duty cycle must be
appropriate
Check that duty cycle lies within specified limits
Check that duty cycle and shock loads lie within
specified limits
Check the following:
2
1. P0611 (motor I t time constant) should be
set to appropriate value
2
2. P0614 (Motor I t overload warning level)
should be set to suitable level
Contact Service Department
Check the following:
1. Input voltage must lie within range.
2. Load must be matched.
3. In certain cases apply braking resistor.
Check the inverter input voltage (P0210)
MICROMASTER 410
Issue 04/02
Reac-
tion
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Operating Instructions
6SE6400-5EA00-0BP0