Temperature monitoring
Thermal detectors PT1000
The thermal detector used connuously monitors the motor temperature. The temperature
informaon is transferred to the inverter using the system cable of the feedback system. This
is not a full motor protecon!
This makes it possible to determine the motor temperature in the permissible operang range
with great accuracy.
The thermal sensors used connuously monitor the motor temperature. The temperature
informaon is transferred to the inverter using the system cable of the feedback system. This
is not a full motor protecon!
The motors are monitored via three thermal sensors connected in series (1x PT1000 + 2x PTC
150 °C ). This makes it possible to determine the motor temperature in the permissible
operang range and at the same me execute the overtemperature response congured in
the inverter in one of the winding strands.
The three thermal sensors connected in series are idened on the nameplate
by the short designaon "PT1k+2PTC".
When supplying the thermal sensors with a measurement current of 1 mA, the
connecon between the temperature and the resistance measured applies.
T [°C]
W
R [Ω]
1000
1200
1400
1600
1800
2000
2200
2400
2600
2800
3000
0 20 40 60 80 100 120 140 160 180
R Resistance
T
W
Winding temperature
Product extensions
Temperature monitoring
Thermal detectors PT1000
143
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