Grundfos MGE Series User Manual

English (GB)
40
• ""Influence table with Stop at Max.""
The setpoint is influenced by a curve made out of
two to eight points. There is a straight line
between the points and a horizontal line before
the first point and after the last point. If the input
signal is above 90 %, the motor changes to
operating mode ""Min."".
If the input signal is reduced below 85 %, the
operating mode is changed back to ""Normal"".
See fig. 42.
Fig. 42 ""Influence table with Stop at Max.""
(example with five points)
10.14 "Predefined setpoints"
You can set and activate seven predefined setpoints
by combining the input signals to digital inputs 2, 3
and 4 as shown in the table below.
Set the digital inputs 2, 3 and 4 to ""Predefined
setpoints"" if all seven predefined setpoints are to be
used. You can also set one or two of the digital inputs
to ""Predefined setpoints"" but this limits the number
of predefined setpoints available.
Example
Figure 43 shows how you can use the digital inputs
to set seven predefined setpoints. Digital input 2 is
open and digital inputs 3 and 4 are closed. If you
compare with the table above, you can see that
"Predefined setpoint 6" is activated.
Fig. 43 Principle sketch showing how
predefined setpoints function
If all digital inputs are open, the motor stops or runs
at the normal setpoint. Set the desired action with
Grundfos GO or with the advanced control panel.
TM06 4172 1615
100
0
800
0.5
0
0
0
4
-50
100 %
3.5 V
5 V
10 V
20 mA
20 mA
204 C
"Setpoint influence" [%]
External
input
"Normal"
"Min." or
"Stop"
Digital inputs
Setpoint
234
0 0 0 Normal setpoint or stop
1 0 0 "Predefined setpoint 1"
0 1 0 "Predefined setpoint 2"
1 1 0 "Predefined setpoint 3"
0 0 1 "Predefined setpoint 4"
1 0 1 "Predefined setpoint 5"
0 1 1 "Predefined setpoint 6"
1 1 1 "Predefined setpoint 7"
0: open contact
1: closed contact
TM06 4269 1815
0
1
2
3
4
5
6
7
Digital input 4
Setpoint 1
Setpoint 2
Setpoint 3
Setpoint 4
Setpoint 5
Setpoint 6
Setpoint 7
Digital input 3
Digital input 2
Actual setpoint
Stop
Normal
setpoint

Grundfos MGE Series Specifications

General

Brand	Grundfos
Model	MGE Series
Category	Engine
Language	English