A
Y
B
4.2.10.3 Bus signal
The product enables serial communication 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, you can remote-set operating parameters, such as setpoint and operating mode. At the same time, the product can provide
status information about important parameters, such as the actual value of the control parameter, input power and fault indications, via the
bus.
Contact Grundfos for further information.
If you use a bus signal, the local settings made via Grundfos GO Remote or the advanced operating panel will be overruled.In case
the bus signal fails, the product will run with the local settings made via Grundfos GO Remote or the advanced operating panel.
4.2.11 Installing a communication interface module
DANGER
Electric shock
Death or serious personal injury
‐
Switch off the power supply to the product including the power supply for the signal relays. Wait at least 5 minutes before you
make any connections in the terminal box. Make sure that the power supply cannot be switched on accidentally.
Use an antistatic service kit when handling electronic components. This prevents static electricity from damaging the components.
1. Loosen the four screws (A) and remove the terminal box cover (B).
A
B
A
Y
B
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