IFM Electronic LR2050 - Switching Output Logic

12
6.3.3 Switching functions
Via switching output OUT1 (factory setting) or additionally via OUT2 (can be set)
the unit signals that a set limit level has been reached or that the level is below the
limit� The following switching functions can be selected:
• Hysteresis function / normally open (fig� 6-3): [oux] = [Hno]
• Hysteresis function / normally closed (fig� 6-3): [oux] = [Hnc]
First the set point (SPx) is set, then the reset point (rPx) with the requested
difference�
• Window function / normally open (fig� 6-4): [oux] = [Fno]
• Window function / normally closed (fig� 6-4): [oux] = [Fnc]
The width of the window can be set by means of the difference between
FHx and FLx� FHx = upper value, FLx = lower value�
Fig. 6-3 Fig. 6-4
SP
rP
t
L
FH
FL
1
0
1
0
FE
Fno
Fnc
L :
HY:
FE:
Level
Hysteresis
Window
• The adjustable limits (e�g� SP / rP) always refer to the lower edge of the rod�
• For the switching output a switch-on and switch-off delay of max� 60 s can be
set (e�g� for especially long pump cycles) (→ 11.4.4)�