Controller" ("Controller Settings") - Grundfos TPE 1000 Series Installation And Operating Instructions Manual

Signal
range
[V, mA]
0
0-10 V 0 V
0-20 mA 0 mA
4-20 mA 4 mA
The reading is a percentage of the range between 0
and 200 % of the nominal flow.
Factory setting
See section Factory settings.
Related information
7.5.1 Connection terminals, advanced functional
module, FM 300
30. Factory settings

13.14 "Controller" ("Controller settings")

Pump variant
TPE, TPED, NBE, NBGE,
NKE, NKGE
TPE, TPED, NBE, NKE
Series 2000
The pumps have a factory setting of gain, K
integral time, T .
i
However, if the factory setting is not the optimum
setting, you can change the gain and the integral
time.
• Set the gain within the range from 0.1 to 20.
• Set the integral time within the range from 0.1 to
3600 seconds. If you select 3600 seconds, the
controller functions as a P controller.
Furthermore, you can set the controller to inverse
control. This means that if the setpoint is increased,
the speed is reduced. In the case of inverse control,
the gain must be set within the range from -0.1 to -20.
Guidelines for setting of PI controller
The tables below show the recommended controller
settings:
Flow rate
[%]
100 200
5 V 10 V
10 mA 20 mA
12 mA 20 mA
"Controller"
●
●
, and
p
"Differential-pressure
control"
p
p
p p
L1
Δp
L1
Δp
L1: distance in metres between pump and sensor.
"Temperature
Heating
control"
system
0.5
t
L2
L2
t 0.5
1)
In heating systems, an increase in pump
performance results in a rise in temperature at the
sensor.
2)
In cooling systems, an increase in pump
performance results in a drop in temperature at the
sensor.
L2: distance in metres between heat exchanger and
sensor.
K T
p i
0.5 0.5
L1 < 5 m: 0.5
0.5 L1 > 5 m: 3
L1 > 10 m: 5
K
p
T
Cooling i
1) 2)
system
-0.5 10 + 5L2
-0.5 30 + 5L2
47