Evaluating Temperature Channels; Function Diagram - Siemens SINAMICS G150 Operating Instructions Manual
Converter cabinet units 75 kw to 1500 kw
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Functions, Monitoring, and Protective Functions
9.4 Monitoring and protective functions
9.4.6.5
Evaluating temperature channels
For each of the individual 12 temperature channels, using p4102[0...23] an alarm threshold
and a fault threshold can be set (straight parameter indices: Alarm thresholds, odd
parameter indices: Fault thresholds). The temperature thresholds can be set for each
channel from -99 °C to +251 °C. For p4102[0...23] = 251, the evaluation of the corresponding
threshold is deactivated.
Using p4118[0...11], for each channel a hysteresis for the fault/alarm thresholds can be set
in p4102[0...23].
The following applies for the alarm thresholds:
● If the temperature actual value associated with a channel exceeds the set alarm
● The alarm remains until the temperature actual value (r4105[x]) has reached or fallen
● If, after the timer has expired, the temperature actual value is still above the alarm
The following applies for the fault thresholds:
● If the temperature actual value associated with a channel exceeds the set fault threshold
● The fault remains until the temperature actual value (r4105[x]) has reached or fallen
Using p4119[0...11], for each channel, a filter can be activated to smooth the temperature
signal.
The time constant of the filter depends on the number of active temperature channels and
can be read in r4120.
Failure of a sensor within a group
Using parameter p4117[0...2], the response to the failure of a temperature sensor can be set
within a group:
● p4117[x] = 0: The failed sensor is not taken into account in the group.
● p4117[x] = 1: When a sensor fails, for the maximum value, minimum value and the
9.4.6.6
Function diagram
FP 9625
FP 9626
FP 9627
510
threshold (r4105[x] > p4102[2x]), the corresponding alarm is output. Timer p4103[0...11]
is started at the same time.
below the alarm threshold (p4102 [2x]) - hysteresis (p4118 [x]).
threshold, then the appropriate fault is output.
(r4105[x] > p4102[2x+1]), the corresponding fault is output.
below the fault threshold (p4102 [2x+1]) - hysteresis (p4118 [x]) and the fault has been
acknowledged.
average value of the group, a value of 300 °C is output.
TM150 - temperature evaluation structure (channel 0 ... 11)
TM150 - temperature evaluation 1x2, 3, 4-wire (channel 0 ... 5)
TM150 - temperature evaluation 2x2-wire (channel 0 ... 11)
Converter cabinet units
Operating Instructions, 03/2012, A5E03263466A
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