Lenze g500-B - Temperature Monitoring; Thermal Detectors PT1000

Temperature monitoring
Thermal de
tectors PT1000
The thermal sensors used connuously monitor the motor temperature. The temperature
informaon is transferred to the inverter using the system cable of the feedback system. This
is not a full motor protecon!
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
operang range and at the same me execute the overtemperature response congured in
the inverter in one of the winding strands.
The three thermal sensors connected in series are idened on the namepla
te
by the short designaon "PT1k+2PTC".
When supplying the thermal sensors with a measurement current of 1 mA, the
c
onnecon 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
T
emperature monitoring
Thermal detectors PT1000
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