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17. Bus signal
The pump supports serial communication via an RS-485 input.
The communication is carried out according to Grundfos
GENIbus protocol and enables connection to other pumps as well
as a building management system or another external control
system.
Via a bus signal, you can remote-set pump operating parameters,
such as setpoint and operating mode. At the same time, the pump
can, via the bus, provide status information about important
parameters, such as actual value of control parameter, input
power and fault indications.
Contact Grundfos for further information.
18. Priority of settings
You can always set the pump to stop by pressing on the
pump control panel. When the pump is not in "Stop" mode, you
can always stop the pump by continuously pressing .
Furthermore, you can set the pump to maximum speed by
continuously pressing . You can always set the pump to
operation at maximum speed or to stop with Grundfos GO.
If two or more functions are enabled at the same time, the pump
will operate according to the function with the highest priority.
Example
If, via the digital input, the pump has been set to maximum speed,
the pump control panel or Grundfos GO can only set the pump to
"Manual" or "Stop".
The priority of the settings appears from the table below:
* If the bus communication is interrupted, the pump will resume
its previous operating mode, for example "Stop", selected with
Grundfos GO or on the pump control panel.
If you use a bus signal, the number of settings
available via Grundfos GO will be reduced.
Priority Start/stop button
Grundfos GO or control
panel on the motor
Digital input Bus communication
1 Stop
2 Stop*
3 Manual
4 Max. speed*
5 Stop
6 Stop
7 Max. speed
8 Min. speed
9 Start
10 Max. speed
11 Min. speed
12 Min. speed
13 Start
14 Start
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