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 probe.
• 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)
.
6.3.4 Damping function
With unsteady level (e.g. turbulence, wave movements...) display and output
response may be damped. During damping the determined level values are
