Function Description
Operating Manual PNOZ m EF 4AI
1004650-EN-02
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Example: Numerical value exceeds the working range
mA
t
R1
R4
R2
R3
0
1
Failure information
Failure information
Hysteresis
Hysteresis
Workspace
Numerical value
valid
4.3.2
Plausibility check
In the plausibility check, a leading signal (L) is checked with a reference signal (P).
When the deviation of both values is greater than the configured tolerance, the numerical
value will be signalised as invalid.
The reference signal is used to calculate the tolerance.
WARNING!
Loss of the safety function with large tolerances
Depending on the application, serious injury or death may result.
When configuring a high tolerance time and simultaneously a small toler-
ance period, the result may be a tolerance of approximately 100 %.
Select the tolerance value as small as possible.
