SITRANS FM100
page 28 A5E48762204-AA
10.6.1.2 Output type
The parameter "Output type" defines the function of the transistor output. NPN,
PNP or PP (push-pull) output types are available. The push-pull type combines
NPN and PNP and is therefore the best choice for most circuits. All outputs are
short circuit and overload protected.
10.6.1.3 Switching function
The "switching function" defines the mode of operation of the outputs. In the
default setting "normally open", the output becomes active (switched) when the
measured value exceeds the switching threshold. This feature is also referred to
as N.O.
In the "Normally closed" setting, the output below the switching threshold is
already active and is deactivated when the measured value exceeds the
switching threshold. This function is also referred to as N.C.
10.6.1.4 Threshold
Threshold for limit value function and upper window point for window function.
10.6.1.5 Lower threshold
The "lower threshold" defines the lower limit when using the window function.
When using the limit value function, this parameter remains ineffective.
The switching thresholds can be set both positive and negative.
10.6.1.6 Hysteresis
The appropriate setting of the "hysteresis" parameter ensures that the switching
outputs do not switch on and off continuously when the current measured value
fluctuates around the switching threshold. The hysteresis value should therefore
always be greater than the real measured value fluctuations. As a result, a
targeted suppression can be achieved.
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