English (GB)
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15. Bus signal
Bus communication is enabled via an RS-485 input.
The communication is carried out according to the Grundfos
GENIbus protocol and enables connection to a building
management system or another external control system.
Via a bus signal, it is possible to remote-set motor operating
parameters, such as setpoint and operating mode. At the same
time, the motor 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.
16. Priority of settings
The system can always be set to operate at maximum speed or to
stop with Grundfos GO Remote.
If two or more functions are enabled at the same time, the system
will operate according to the function with the highest priority.
Example:
If, via the digital input, the system has been set to
maximum speed, the pump control panel or Grundfos GO Remote
can only set the system to "Manual" or "Stop".
The priority of the settings appears from the table below:
* If the bus communication is interrupted, the system will
resume its previous operating mode, for example "Stop",
selected on the control panel of the pump running as master or
with Grundfos GO Remote.
If a bus signal is used, the number of settings
available via Grundfos GO Remote will be reduced.
Priority
Start/stop button
Control panel on pump or
Grundfos GO Remote
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
