Siemens SINAMICS S120 Commissioning Manual page 221

TM150
The Terminal Module 150 (TM150) has 6x 4-pole terminals for temperature sensors.
Temperature sensors can be connected in a 2, 3 or 4-wire system. Up to 12 input channels
can be evaluated if two 2-wire sensors are connected to the 4 poles at the input terminal
strips. Twelve (12) input channels can be evaluated in the factory setting. The temperature
channels of a TM150 can be subdivided into 3 groups and evaluated together.
When using 2-wire sensors, to increase the measuring accuracy, the cable resistance can
be measured and saved. To do this, short-circuit the sensor cable as close as possible to the
sensor. The procedure is described in the SINAMICS S120/150 List Manual under
p4109[0...11]. The measured cable resistance is then taken into account when evaluating
the temperature. The cable resistance value is saved in p4110[0...11].
The TM150 can acquire the signals from KTY84, PTC, bimetallic NC contact, PT100 and
PT1000 temperature sensors and evaluate them. The fault and alarm thresholds of the
temperature values can be set from -99 °C to 251°C. The temperature sensors are
connected at terminal strip X531 to X536 according to the table above. For further
information on the configuration and the connections, refer to the function diagrams 9625,
9626 and 9627 in the SINAMICS S120/S150 List Manual.
● p4100[0...11] sets the sensor type for the respective temperature channel.
● r4105[0...11] indicates the actual value of the temperature channel.
● With p4108[0...5] = 0, you evaluate a sensor in a 2-wire system at a 4-wire connection at
Commissioning Manual
Commissioning Manual, (IH1), 01/2013, 6SL3097-4AF00-0BP3
Value of p4100[0...11]
0
1
2
4
5
6
For switching temperature sensors, such as PTC and bimetallic NC contact, two limit
values are displayed symbolically:
– r4105[0...11] = -50°C: The actual temperature value is below the rated response
temperature.
– r4105[0...11] = +250°C: The actual temperature value is above the rated response
temperature.
Note
For PTC and bimetal NC contact the following applies
What is shown in r4105[0...11] does not correspond to the actual temperature value.
terminals 1 and 2. Terminals 3 and 4 remain open.
2.16 Temperature sensors for SINAMICS components
Temperature sensor
Evaluation disabled
PTC thermistor
KTY84
Bimetallic NC contact
PT100
PT1000
Temperature display range r4105[0...11]
-
-50°C or +250°C
-99°C to +250°C
-50°C or +250°C
-99°C to +250°C
-99°C to +250°C
Commissioning
219