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Grundfos MGE 71
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English (GB)
16
8.2.1 Setpoint setting
Set the desired setpoint of the motor by pressing or .
The green light fields on the control panel will indicate the
setpoint set.
Motor in controlled-operation mode
The following example applies to a pump in an application where
a pressure sensor gives a feedback to the pump. The sensor is
set up manually, and the pump does not automatically register a
connected sensor.
Figure 19 shows that the light fields 5 and 6 are activated,
indicating a desired setpoint of 3 bar with a sensor measuring
range from 0 to 6 bar. The setting range is equal to the sensor
measuring range.
Fig. 19 Setpoint set to 3 bar, pressure-control mode
Motor in uncontrolled-operation mode
In uncontrolled-operation mode, the motor output will lie between
max. and min. speed. See fig. 20.
Fig. 20 Motor in uncontrolled-operation mode
Setting to max. speed
Press
continuously to change over to the max. speed
(top light field flashes). When the top light field is on, press
for
3 seconds until the light field starts flashing.
To change back, press
continuously until the desired setpoint
is indicated.
Example: Motor set to max. speed.
Figure 21 shows that the top light field is flashing, indicating max.
speed.
Fig. 21 Max. speed duty
Setting to min. speed
Press
continuously to change over to the min. speed
(bottom light field flashes). When the bottom light field is on,
press
for 3 seconds until the light field starts flashing.
To change back, press continuously until the desired setpoint
is indicated.
Example: Motor set to min. speed.
Figure 22 shows that the bottom light field is flashing, indicating
min. speed.
Fig. 22 Min. speed duty
8.2.2 Start/stop of motor
Stop the motor by pressing . When the motor is stopped, the
"Stop" text next to the button will illuminate. The motor can also
be stopped by continuously pressing
until none of the light
fields are on.
Start the motor by pressing
or by continuously pressing
until the desired setpoint is indicated.
If the motor has been stopped by pressing , it can only be
given free to operation by pressing again.
If the motor has been stopped by pressing , it can only be
restarted by pressing .
The motor can also be stopped with the R100, Grundfos GO
Remote or via a digital input set to "External stop". See section
11. Priority of settings.
8.2.3 Resetting of alarms and warnings
A fault indication can be reset in one of the following ways:
Via the digital input if it has been set to "Alarm resetting".
Briefly press or
on the motor. This will not change the
setting of the motor.
A fault indication cannot be reset by pressing or
if the
buttons have been locked.
Switch off the power supply until the indicator lights are off.
Switch the external start/stop input off and then on again.
With the R100. See section Alarm, page 19.
With the Grundfos GO Remote.
TM05 4894 3512TM05 4895 2812
0
6
3
bar
H
Q
TM05 4896 2812TM05 4897 2812
H
Q
H
Q

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