Siemens SINAMICS S150 NEMA, Руководство по эксплуатации

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Functions, monitoring and protective functions
9.5 Monitoring functions and protective functions
Enclosed Drives
714
Operating Instructions, 12/2018, A5E36652151A
Note
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.
9.5.6.5 Evaluation of temperature channels
For each of the individual 12 temperature channels, using p4102[0...23] an alarm threshold
and a fault threshold can be set (even parameter indices: warning thresholds, odd parameter
indices: fault thresholds). The temperature thresholds can be set for each channel from
-146.2 °F (-99 °C) to 483.8 °F (+251 °C). For p4102[0...23] = 251, the evaluation of the
corresponding threshold is deactivated.
Using p4118[0...11], a hysteresis for the fault/alarm thresholds can be set in p4102[0...23] for
each channel.
The following applies to the warning thresholds:
● If the actual temperature value associated with a channel exceeds the specified warning
threshold (r4105[x] > p4102[2x]), the corresponding alarm is output. Timer p4103[0...11]
is started at the same time.
● The alarm remains until the actual temperature value (r4105[x]) has reached or fallen
below the alarm threshold (p4102[2x]) - hysteresis (p4118[x]).
● If, after the timer has expired, the actual temperature value is still above the alarm
threshold, then the corresponding fault is output.
The following applies to the fault thresholds:
● If the actual temperature value associated with a channel exceeds the specified fault
threshold (r4105[x] > p4102[2x+1]), the corresponding fault is output.
● The fault remains until the actual temperature value (r4105[x]) has reached or fallen
below the fault threshold (p4102[2x+1]) - hysteresis (p4118[x]) and the fault has been
acknowledged.
Using p4119[0...11], a filter for smoothing the temperature signal can be activated for each
channel.
The time constant of the filter depends on the number of active temperature channels and
can be read off in r4120.