Temperature Monitoring; Thermal Detectors Pt1000 - Lenze g500-B Manual

Temperature monitoring

Thermal detectors PT1000

The thermal detector used continuously monitors the motor temperature. The temperature
information is transferred to the inverter using the system cable of the feedback system. This
is not a full motor protection!
This makes it possible to determine the motor temperature in the permissible operating range
with great accuracy.
The thermal sensors used continuously monitor the motor temperature. The temperature
information is transferred to the inverter using the system cable of the feedback system. This
is not a full motor protection!
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
operating range and at the same time execute the overtemperature response configured in
the inverter in one of the winding strands.
The three thermal sensors connected in series are identified on the nameplate
by the short designation "PT1k+2PTC".
When supplying the thermal sensors with a measurement current of 1 mA, the
connection between the temperature and the resistance measured applies.
3000
2800
2600
2400
2200
2000
1800
1600
1400
1200
1000
0
R Resistance
T Winding temperature
W
20 40 60 80
T [°C]
100 120 140
W
Product extensions
Temperature monitoring
Thermal detectors PT1000
160 180
141