Field Bus Connection (Ch1 / Ch2); Bus Termination Switch - Honeywell Q7055A Installation Instructions Manual

BUILDING NETWORK ADAPTER BNA-1C/2CS/2DN
5.2

Field Bus Connection (Ch1 / Ch2)

Regardless of the type of BNA device, the wiring of
the field bus connector is always identical.
For connecting the field bus, the 3-pole Phoenix
connectors (included) are required.
Figure 5-1
Figure 5-1 shows the pin layout of the field bus
connectors Ch1 and Ch2. Pins 1 and 2 shall be used
to connect the field bus.
5.3

Bus Termination Switch

This section applies to BNA 2CS and BNA 1C
devices only.
The Bus Termination Switch is used to select
between different field bus terminations on DC
coupled RS485 busses.
20
A B
C + C - GND
1 2
EN1B-0198GE51 R1004B