The "relays/controls" menu
106
"pump control N" (N = 1 or 2)
(Switching points for rate control)
"switch on point"
Specifies the switch-on point. Use the selected level unit.
"
Caution!
After a change of the "unit level", the switch on point has to be checked and adjusted if required.
"switch off point"
Specifies the switch-off point. Use the selected level unit.
"
Caution!
After a change of the "unit level", the switch off point has to be checked and adjusted if required.
"min pump rate"
Specifies the desired minimum pump rate (for details see section "limit control and rate control").
!
Note!
If the vessel is to be emptied, a negative pump rate has to specified.
"crust reduction" subfunction
Specifies a range of inaccuracy (percentage of the measuring range) for the switching points. If this
value is larger then "0", the switching points are not exactly constant. Instead, they vary within the
specified range of inaccuracy.
This helps to avoid crust formation, which often occurs at fixed switching points.
L00-FMU90xxx-19-00-00-yy-056
A: switch-on point; B: switch-off point; C: pump onD: pump off; E: inaccuracy ("crust reduction")
⇒
pump control R13A3
switch on point:
switch off point:
min pump rate:
alternate:
L
t
t
A
B
C
D
E
E
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