• 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.
Terminal wiring guidelines, functions,
ratings, and requirements
Input and Output wiring guidelines
Table 2 provides information and guidelines about
the functions, ratings, and requirements for the
controller input and output terminals. The table also
references guidelines for determining proper wire
sizes and cable lengths.
In addition to the wiring guidelines in Table 2,
observe these guidelines when you wire controller
inputs and outputs:
• Run all low-voltage wiring and cables separate
from high-voltage wiring.
• All input and output cables, regardless of wire
size or number of wires, should consist of
stranded, insulated, and twisted copper wires.
FAC3613 Advanced Application Field Equipment Controller Installation Guide
6
