Bus Signal; Other Bus Standards; Indicator Lights And Signal Relay - Grundfos CRE Serie Notice D'installation Et De Fonctionnement

4.9 Bus signal

The pump supports serial communication via an RS-485 input.
The communication is carried out according to Grundfos bus
protocol, GENIbus protocol, and enables connection to a building
management system or another external control system.
Operating parameters, such as setpoint, operating mode, etc. can
be remote-set via the bus signal. At the same time, the pump can
provide status information about important parameters, such as
actual value of control parameter, input power, fault indications,
etc.
Contact Grundfos for further details.
If a bus signal is used, the number of settings
available via the R100 will be reduced.
Green Red
Fig. 27 Position of indicator lights
Besides, the pump incorporates an output for a potential-free
signal via an internal relay.
For signal relay output values, see section 4.4.4 Signal relay.
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4.10 Other bus standards

Grundfos offers various bus solutions with communication
according to other standards.
Contact Grundfos for further details.

4.11 Indicator lights and signal relay

The operating condition of the pump is indicated by the green and
red indicator lights fitted on the pump control panel and inside the
terminal box. See fig. 27.
Green
Red
Green
Red