Autosen AL009 Notice D'utilisation page 46

10.2.4 Hysteresis function
The hysteresis keeps the switching state of the output stable if the measured
value varies about the sensing range� The selected switch point [SPx] is the set
point� The reset point is automatically set above the selected switch point [SPx]
by the sensor� The nominal distance between switch-on pint and reset point is
the hysteresis, it is indicated in the data sheet� The hysteresis depends on the
reflectivity of the background�
Example Hno
1� For the output function [Hno] the output switches when the object approaches
and when the set point (A) is reached�
2� When the object is removed again, the output does not switch back before the
reset point (B) is exceeded�
The reset point (B) is above the set point (A)�
1
2
[SPx] = switch point; A = set point; B = reset point
If the output function [Hnc] has been selected, the set and reset points are
reversed� The output switches off when the object approaches� When the object is
removed again, the output switches�
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A =[SPx]
A = [SPx]