Feig Electronic VEK MNH2-R24-C - Setting hysteresis (switch-off threshold)

VEK MNH
Description of settings
VEK MNH Operating Manual v1.3 en
37 | 56
11.2 Setting hysteresis (switch-off threshold)
In order to prevent any intermittent cut-out in the coverage signal in the case of vehicles with high
substructures such as articulated buses, trams or HGVs with trailers, it is possible to change the switching
hysteresis (switch-off threshold). Interruption-free detection of critical vehicles is then also possible at a lower
sensitivity.
Fig. 10: Switch-off threshold hysteresis
Symbol
Description
SV (f)
Loop detuning by vehicle
ES
Switch-on threshold (reference value100 %)
75 %
Switch-off threshold at 75 % of the switch-on threshold
25 %
Switch-off threshold at 25 % of the switch-on threshold
Output (…)
Signal output at 75 % or 25 % hysteresis
t
Duration
Tab. 18: Key to symbols
NOTE
Setting the hysteresis
The hysteresis is set in the Detector Tool.
DIP
Detector Tool (hysteresis)
Switch-off threshold (hysteresis in % of the switch-on
threshold)
20 %
minimal (low switch-off threshold)
…
…
75 %
(factory setting)
…
…
80 %
maximum (high switch-off threshold)
Tab. 19: Hysteresis settings