Trip Point And Hysteresis - Pepperl+Fuchs KFD2-HLC-Ex1.D Manual

HART Loop Converter KFD2-HLC-(Ex)1.D(.**)
Editing device data: Relay
The following illustration shows the exact switching characteristics of the HLC:
Measured value
Max. trip point
Max. - hysteresis
Min. + hysteresis
Min. trip point
Switching direction Max, switching mode Active:
energized
de-energized
Switching direction Max, switching mode Passive:
energized
de-energized
Switching direction Min, switching mode Active:
energized
de-energized
Switching direction Min, switching mode Passive:
energized
de-energized

8.5.4 Trip point and hysteresis

Please remember the following when entering values for Trip point and Hysteresis:
• Both values must be entered as floating decimal numbers in the unit selected under Unit (see
section 8.1.4 and 8.2).
• The selected hysteresis must be > 1 % of the trip point to prevent the relay from vibrating.
Time
31