SIEMENS
SINAMICS G150 NEMA
Engineering information
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Siemens D11.7
(Part 1) – 2013
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RTD monitor
The TM150 RTD module is suitable for monitoring a
variety of temperature sensors, over the temperature
range -146°F (-99°C) to +480°F (+250°C):
• Pt100 - Platinum RTD 100 ohm
• Pt1000 - Platinum RTD 1,000 ohm
• KTY84 - temperature sensor
• PTC - Positive temperature coefficient thermistor
• Temperature switch (NC) contact (for example
Thermoclick or bimetallic switch)
Up to 12 sensors in 2-wire connection or up to 6 sensors
in 3- or 4-wire connection can be connected to one
TM150. The TM150 detects wire breakage or a short
circuit in the RTD leads for Pt100, Pt1000 and KTY84
sensors, and short circuit for PTC thermistors.
Temperature values from the TM150 are available for
further processing. Motor winding temperatures can be
used for the thermal motor model in the closed loop
control. Temperature values can be displayed on the
AOP30, and transmitted to the process control system
via bus communications.
Note: TM150 inputs are not galvanically isolated. Only
temperature sensors isolated per IEC 61800-5-1 may be
connected to terminals “+Temp” and “-Temp”. Failure to
observe these instructions can result in electric shock!
TM150 Terminal Module (options G51 and G52)