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 . The FC bus
port pin assignment is shown in Figure 6.
Note:
• 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 . 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 for more information
about the Supply Power Terminal Block.
Figure 7: 24 VAC supply power terminal block wiring
Note:
The supply power wire colors may be different
on transformers from other manufacturers. Refer to
the transformer manufacturer’s instructions and the
project installation drawings for wiring details.
Important:
Connect 24 VAC supply power to the
field controller and all other network devices so
that transformer phasing is uniform across the
network devices. Powering network devices with
uniform 24 VAC supply power phasing reduces
noise, interference, and ground loop problems. The
field controller does not require an earth ground
connection.
FAC3611 Advanced Application Controller Installation Guide
5
