A03520 (F, N) Temperature Sensor Fault; Power Unit: Overtemperature Heat Sink Ac Inverter; Power Unit: Overtemperature Depletion Layer Chip; Power Unit: Air Intake Overtemperature - Siemens SINAMICS G120X Operating Instructions Manual

Infrastructure converter for hvac/water/wastewater
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Remedy:
- switch-off/switch-on the power supply for the Control Unit.
Note:
If it reoccurs, then replace the module.
In principle, operation could continue.
The analog channel involved possibly does not achieve the specified accuracy.

A03520 (F, N) Temperature sensor fault

Reaction:
NONE
Acknowledge:
NONE
Cause:
When evaluating the temperature sensor, an error occurred.
It is expected that one of the following temperature sensors is connected via an analog input:
- LG-Ni1000 (p0756[2...3] = 6)
- PT1000 (p0756[2...3] = 7)
- DIN Ni 1k (p0756[2...3] = 10)
Alarm value (r2124, interpret decimal):
33: Analog input 2 (AI2) wire breakage or sensor not connected.
34: Analog input 2 (AI2) measured resistance too low (short circuit).
49: Analog input 3 (AI3) wire breakage or sensor not connected.
50: Analog input 3 (AI3) measured resistance too low (short circuit).
See also: p0756 (CU analog inputs type)
Remedy:
- make sure that the sensor is connected correctly.
- check the sensor for correct function and if required, replace.
- change over the analog input to type "no sensor connected" (p0756 = 8).
A05000 (N)

Power unit: Overtemperature heat sink AC inverter

Reaction:
NONE
Acknowledge:
NONE
Cause:
The alarm threshold for overtemperature at the inverter heat sink has been reached. The response is set using p0290.
If the heat sink temperature exceeds the value set in p0292[0], then fault F30004 is output.
Remedy:
Check the following:
- is the ambient temperature within the defined limit values?
- have the load conditions and the load duty cycle been appropriately dimensioned?
- has the cooling failed?
A05001 (N)

Power unit: Overtemperature depletion layer chip

Reaction:
NONE
Acknowledge:
NONE
Cause:
Alarm threshold for overtemperature of the power semiconductor in the AC converter has been reached.
Note:
- the response is set using p0290.
- if the temperature of the barrier layer increases by the value set in p0292[1], then fault F30025 is initiated.
Remedy:
Check the following:
- is the ambient temperature within the defined limit values?
- have the load conditions and the load duty cycle been appropriately dimensioned?
- has the cooling failed?
- pulse frequency too high?
See also: r0037, p0290
A05002 (N)

Power unit: Air intake overtemperature

Reaction:
NONE
SINAMICS G120X converter
Operating Instructions, 06/2019, FW V1.01, A5E44751209B AC
Warnings, faults and system messages
9.6 List of fault codes and alarm codes
995

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