Forming Groups Of Temperature Sensors - Siemens SINAMICS G150 Operating Instructions Manual

9.4.6.4

Forming groups of temperature sensors

Using p4111[0...2], temperature channels can be combined to form groups. For each group,
the following calculated values are provided from the temperature actual values
(r4105[0...11]):
● Maximum: r4112[0...2], (index 0,1,2 = group 0,1,2)
● Minimum: r4113[0...2]
● Average value: r4114[0...2]
Example:
The temperature actual value from channels 0, 3, 7, and 9 should be combined in group 1:
● p4111[1].0 = 1
● p4111[1].3 = 1
● p4111[1].7 = 1
● p4111[1].9 = 1
The calculated values from group 1 are available in the following parameters for
interconnection:
● r4112[1] = maximum
● r4113[1] = minimum
● r4114[1] = average value
NOTICE
Forming groups of temperature channels
Only form groups of continuously measuring temperature sensors. Depending on the
status, the switching temperature sensors PTC and bimetal NC contacts are only assigned
two temperatures - 50 °C and +250 °C.
Within a group with continuously measuring temperature sensors, the calculation of the
maximum/minimum/average values, is significantly falsified when taking into account
switching temperature sensors.
Converter cabinet units
Operating Instructions, 03/2012, A5E03263466A
Functions, Monitoring, and Protective Functions
9.4 Monitoring and protective functions
509