FC Bus Port
The FC bus port on the front of the controller is an RJ-12, 6-position modular jack that provides a connection for the
Wireless Commissioning Converter or any models of the ZFR or ZFR Pro Routers for wireless field bus applications.
The FC bus port is connected internally to the FC bus terminal block. See
Table 5
for more information. The FC bus
Port pin assignment is shown in
Figure 6
.
Note:
When an FEC is configured for N2 network communication, the FC bus port is not used.
Figure 6: Pin Number Assignments for Sensor, SA Bus, and FC Bus Ports on Controllers
Sensor Port
The Sensor (SA Bus) port on the bottom of the controller (
Figure 3
) is an RJ-12, 6-position modular jack that provides
a connection for the Wireless Commissioning Converter, the VAV box Balancing Tool, specified network sensors,
or other SA Bus devices with RJ-12 plugs.
When the FEC is configured for N2 communication, the SA Bus port must be used to download and commission
the controller.
A DIS1710 Local Controller Display also can be connected to the SA Bus port (but only on FEC models without
integral display and pushbuttons).
The Sensor port is connected internally to the SA bus terminal block. See
Table 5
for more information. The Sensor
Port pin assignment is shown in
Figure 6
.
Supply Power Terminal Block
The 24 VAC supply power terminal block is a gray, removable, 3-terminal plug that fits into a board-mounted jack
on the top right of the controller.
Wire the 24 VAC supply power wires from the transformer to the HOT and COM terminals on the terminal plug as
shown in
Figure 7
. The middle terminal on the supply power terminal block is not used. See
Table 5
for more
information about the Supply Terminal Block.
8
FEC1611 and FEC1621 Field Equipment Controller Installation Instructions