Siemens SINAMICS G150, Operating Instructions Manual

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Functions, monitoring, and protective functions
9.4 Monitoring and protective functions
Converter cabinet units
Operating Instructions, 07/2016, A5E03347396A
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The measured cable resistance is then taken into account when evaluating the temperature.
The cable resistance value is saved in p4110[0...11].
Note
Cable resistance
The value for the cable resistance can also be directly entered into p4110[0...11].
Line filter
A line filter is available to suppress radiated noise. Using p4121, the filter can be set to a 50
Hz or 60 Hz rated line frequency.
9.4.6.2 Measurement with up to 6 channels
Temperature measurement with a sensor in 2-wire technology
With p4108[0...5] = 0, you sense the signals from a sensor in 2-wire technology at a 4-wire
connection at terminals 1(+) and 2(-).
Terminals 3 and 4 remain open.
Temperature measurement with a sensor in 3-wire technology
With p4108[0...5] = 2, you sense the signals from a sensor in 3-wire technology at a 4-wire
connection at terminals 3(+) and 4(-).
The measuring cable is connected at terminal 1 (+).
You must short-circuit terminals 2 (-) and 4 (-).
Temperature measurement with a sensor in 4-wire technology
With p4108[0...5] = 3, you sense the signals from a sensor in 4-wire technology at a 4-wire
connection at terminals 3(+) and 4(-).
The measuring cable is connected at terminal 1(+) and 2(-).
9.4.6.3 Measurement with up to 12 channels
Temperature measurement with two sensors in 2-wire technology
With p4108[0...5] = 1 you can acquire the signals from two sensors in 2-wire technology.
The first sensor is connected at terminal 1(+) and 2(-).
The second sensor (number = first 6) is connected at terminals 3(+) and 4(-).
When connecting two sensors in 2-wire technology to terminal X531, the first sensor is
assigned to temperature channel 1 and the second sensor is assigned to channel 7 (1+6).