Motor components and options
4.1 Motor components
1FW6 Built-in torque motors
Configuration Manual, 07/2017, 6SN1197-0AE00-0BP9
75
All motors are equipped with the following temperature monitoring circuit to protect the motor
winding against thermal overload:
● 1 x PTC 130 °C temperature sensor per phase winding U, V and W, i.e. response
threshold at 130 °C
In addition, 1FW6090-xxxxx-xxx2 to 1FW6290-xxxxx-xxx2 motors are equipped with the
following temperature monitoring circuit:
● 1 x PTC 150 °C temperature sensor for each phase winding U, V and W, response
threshold at 150 °C
The three PTC temperature sensors (PTC thermistor temperature sensors) of this
temperature monitoring circuit are connected in series with a PTC triplet.
Figure 4-4 PTC triplet
To protect the power connection at the enclosure against thermal overload, an additional
PTC 80 °C is connected in series with the PTC 130 °C triplet. For stators of 1FW6090-xxxxx-
xxx2 to 1FW6290-xxxxx-xxx2, an additional PTC 80 °C is connected in series with the
PTC 150 °C triplet.
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