IFM Electronic LR7022 Bedienungsanleitung Und Sicherheitshinweise Seite 44

Applications
Storage vessel
Monitoring of the acceptable range (alarm) and level control
Switching output 1: refilling
upper preset value reached → finish refilling
below lower preset value → start refilling
hysteresis function, normally closed (Hnc)
Switching output 2: safety function min - max
max. value exceeded → alarm
below min. value → alarm
window function, normally open (Fno)
OFS
display value
• If the level is below rP1, output 1 switches until liquid is refilled. If SP1 is
reached again, output 1 switches back.
• If the level is below rP2 or above SP2 or if there is a wire break, output 2
switches OFF (→ alarm).
• The logical operation between the outputs 1 and 2 indicates whether there
is overflow or the actual level is below the minimum level.
- Overflow: output 1 and output 2 switched off.
- Below min. value: output 1 switched on and output 2 switched off.
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refill
OUT1
Hnc
OUT2
Fno
min.
monitoring monitoring
max.