Temperature Monitoring And Thermal Motor Protection; Temperature Monitoring Circuits Temp-S And Temp-F - Siemens SIMOTICS T-1FW6 Series Configuration Manual

Motor components and options
4.1 Motor components
4.1.2

Temperature monitoring and thermal motor protection

4.1.2.1

Temperature monitoring circuits Temp-S and Temp-F

The motors are equipped with the two temperature monitoring circuits – Temp-S and Temp-F
– that are described below.
● Temp-S activates the thermal motor protection when the motor windings are thermally
overloaded. In this case the precondition is that Temp-S is correctly connected and
evaluated. For a thermal overload, the drive system must bring the motor into a no-
current condition.
● Temp-F is used for temperature monitoring and diagnostics during commissioning and in
operation.
Both temperature monitoring circuits are independent of one another.
For example, the SME12x sensor module or the TM120 terminal module evaluates the
temperature sensor signals.
You can obtain commissioning information from Technical Support. Contact data is provided
in the introduction.
Temp-S
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
The three PTC temperature sensors of this temperature monitoring circuit are connected in
series to create a PTC triplet.
Figure 4-2
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.
56
PTC triplet
Naturally cooled 1FW6 built-in torque motors
Configuration Manual, 07/2017, 6SN1197-0AE01-0BP3