Figure 5: SA bus terminal block wiring
Note:
The SA PWR terminal supplies 15 VDC. The SA
PWR terminal can be used to connect (daisy chain)
the 15 VDC power leads on the SA bus.
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 Mobile Access Portal (MAP) Gateway, the Bluetooth
®
Commissioning Converter, or the ZFR/ZFR Pro Wireless
Field Bus Router.
The FC bus port is connected internally to the FC bus
terminal block. For more information about the FC
Bus port functions, requirements, and ratings, see
Communications bus and power supply terminal block
. The FC bus port pin
assignment is shown in Figure 6.
Note:
• When the FAC is configured for N2 network
communication, the FC bus port is not used.
• The MAP Gateway serves as a replacement for the
BTCVT, which is no longer available for purchase,
but continues to be supported.
Figure 6: Pin number assignments for sensor, SA bus,
and FC bus ports on Field Controllers
SA Bus port
The Sensor (SA Bus) port on the bottom of the controller
is an RJ-12, 6-position modular jack that provides
a connection for MAP Gateway, the Bluetooth
®
Commissioning Converter (BTCVT), the VAV Balancing
Tool, specified network sensors, or other SA Bus devices
with RJ-12 plugs.
A DIS1710 Local Controller Display also can be connected
to the SA Bus port (but only on FEC models without
integral display and push buttons).
The Sensor port is connected internally to the SA
bus terminal block. For more information about the
Sensor port functions, requirements and ratings, see
Communications bus and power supply terminal block
. The Sensor Port pin
assignment is shown in Figure 6 (but only on FEC models
without integral display and push buttons).
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. Do not use the middle terminal on the
supply power terminal block. See
and power supply terminal block rating and requirements
for more information about the Supply Power
Terminal Block.
FAC2611 Advanced Application Field Equipment Controller Installation Guide
5
