Grundfos TPE Series - Page 31

English (GB)
31
13.5.7 "Constant level"
The pump maintains a constant level, independently
of the flow rate. See fig. 36.
Fig. 36 "Constant level"
This control mode requires an external level sensor.
The pump can control the level in a tank in two ways:
• as an emptying function where the pump draws
the liquid from the tank.
• as a filling function where the pump pumps the
liquid into the tank.
See fig. 37.
The type of level control function depends on the
setting of the built-in controller. See section
13.14 "Controller" ("Controller settings").
Fig. 37 "Constant level"
Controller settings
For recommended controller settings, see section
13.14 "Controller" ("Controller settings").
13.5.8 "Constant other value"
Any other value is kept constant.
13.5.9 "Constant curve"
You can set the pump to operate according to a
constant curve, like an uncontrolled pump. See fig.
38.
You can set the desired speed in % of the maximum
speed in the range from 25 to 100 % (110 %).
Fig. 38 "Constant curve"
Controller settings
For recommended controller settings, see section
13.14 "Controller" ("Controller settings").
Pump variant "Constant level"
TPE, TPED, NBE, NBGE,
NKE, NKGE
●
TPE, TPED, NBE, NKE
Series 2000
●
TM05 7941 1613
Examples
• One external level sensor.
– emptying function.
• One external level sensor.
– filling function.
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Q
L
L
Pump variant
"Constant other
value"
TPE, TPED, NBE, NBGE,
NKE, NKGE
●
TPE, TPED, NBE, NKE
Series 2000
●
Pump variant "Constant curve"
TPE, TPED, NBE, NBGE,
NKE, NKGE
●
TPE, TPED, NBE, NKE
Series 2000
●
TM05 7957 1713
H
Q