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34
11.2 Constant-curve operation
If constant-curve operation is selected, the setpoint can be set
externally within the range from the min. speed to the setpoint.
Example
Setpoint is to be 100 %.
Operating mode is to be normal.
Control mode is to be constant curve.
Operating range to be 25-100 %.
Analog input to be set as follows: (Grundfos GO).
(Analog input 2) Terminals 7 and 23.
External setpoint function to be set as follows: (Grundfos GO).
See fig. 38.
Fig. 38 Relation between the actual setpoint and the external
setpoint signal in constant-curve operation
Example: At a set setpoint of 65 % of n
max.
and an external
setpoint of 70 %, the actual setpoint is 0.70 x (65 - 12) + 12 = 49
%.
TM05 9662 1013TM05 9661 1013
TM05 5278 3512
010 V
020 mA
420 mA
0.5 3.5 V
05V
% speed
Max. speed
Setpoint set on pump, with the
R100 or with Grundfos GO
Remote
Min. speed
External setpoint signal
Actual
setpoint
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