Grundfos CME Series User Manual

English (US)
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

Grundfos CME Series Specifications

General

Type	Centrifugal Pump
Power Supply	Electric
Maximum Operating Pressure	10 bar
Housing Material	Stainless steel
Impeller Material	Stainless steel
Material	Stainless Steel
Applications	Water boosting, industrial applications, domestic water supply, irrigation, pressure boosting in buildings
Pumped Liquid	Clean water
Approvals	CE
Seal Type	Mechanical Seal
Pressure Rating	PN10