English (GB)
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13. Bus signal
The pump supports serial communication via an
RS-485 input. The communication is carried out
according to the 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.
14. Priority of settings
If two or more functions are enabled at the same
time, the pump operates according to the function
with the highest priority.
Example:
If you have set the pump to maximum
speed via the digital input, the pump operating panel
or Grundfos GO Remote can only set the pump to
Manual or Stop.
The priority of the settings appears from the table
below:
*
"Stop" and "Max. speed" settings made with
Grundfos GO Remote can be overruled by
another operating-mode command sent from a
bus, for example "Start". If the bus
communication is interrupted, the motor resumes
its previous operating mode, for example "Stop",
selected with Grundfos GO Remote.
If you use a bus signal, the number of
settings available via Grundfos GO
Remote are reduced.
Priority
Grundfos GO Remote
Digital input
Bus
communication
1
Stop*
2
Manual
3
"Max. speed"* / "User-defined
speed"
4
Stop
5
"User-defined
speed"
6
Stop
7
"Max. speed"
8
"Min. speed"
9
"Start"
10
"Max. speed"
11
"Min. speed"
12
"Min. speed"
13
"Start"
14
"Start"
