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Grundfos MGE Series User Manual

Grundfos MGE Series
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English (GB)
38
Example with constant curve with linear
influence/function
Actual setpoint: actual input signal x (setpoint -
user-set minimum speed) + user-set minimum
speed.
At a user-set minimum speed of 25 %, and a setpoint
of 85 % and an external setpoint of 60 %, the actual
setpoint is 0.60 x (85 - 25) + 25 = 61 %. See fig. 35.
Fig. 35 Example of setpoint influence with
constant curve
10.13.1 "Setpoint influence" functions
You can select these functions:
""Not active""
When set to ""Not active"", the setpoint is not
influenced from any external function.
""Linear function""
The setpoint is influenced linearly from 0 to 100
%. See fig. 36.
Fig. 36 ""Linear function""
""Linear with Stop"" and ""Inverse with Min.""
– ""Inverse with Stop""
In the input signal range from 20 to 100 %, the
setpoint is influenced linearly.
If the input signal is below 10 %, the motor
changes to operating mode ""Stop"".
If the input signal is increased above 15 %, the
operating mode is changed back to ""Normal"".
See fig. 37.
– ""Inverse with Min.""
In the input signal range from 20 to 100 %, the
setpoint is influenced linearly.
If the input signal is below 10 %, the motor
changes to operating mode ""Min."".
If the input signal is increased above 15 %, the
operating mode is changed back to ""Normal"".
See fig. 37.
Fig. 37 ""Linear with Stop"" and ""Inverse with
Min.""
""Inverse function""
The setpoint is influenced inversely from 0 to 100
%. See fig. 38.
Fig. 38 ""Inverse function""
TM06 4525 2515TM06 4166 1615
100
0
100 %
0
3.5 V0.5
5 V0
10 V0
20 mA0
20 mA4
-50 204 C
25
61
85
External
setpoint
signal
Speed [%]
Fixed
maximum
speed
Actual
input signal
(60 %)
User-set
minimum
speed
Setpoint
Actual
setpoint
100
0
100 %0
3.5 V0.5
5 V0
10 V0
20 mA0
20 mA4
-50 204 C
"Setpoint influence" [%]
External
input
TM06 4167 1615TM06 4168 1615
100
0
20 100 %0
3.5 V0.5
5 V0
10 V0
20 mA0
20 mA4
-50 204 C
"Setpoint influence" [%]
External
input
"Normal"
"Min." or
"Stop"
100
0
100 %0
3.5 V0.5
5 V0
10 V0
20 mA0
20 mA4
-50 204 C
"Setpoint influence" [%]
External
input

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Grundfos MGE Series Specifications

General IconGeneral
BrandGrundfos
ModelMGE Series
CategoryEngine
LanguageEnglish

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