Figure 5: SA Bus Terminal Block Wiring
Note:
The SA PWR/SHLD terminal does not supply 15
VDC. The SA PWR/SHLD terminal is isolated and
can be used to connect (daisy chain) the 15 VDC
power leads on the SA bus (
Figure 5
) or the cable
shields on the FC bus (
Figure 4
). The SA bus
supervisor supplies 15 VDC to devices on the SA
bus requiring power.
SA/FC Bus Port
The SA/FC bus port on the front of the controller is an
RJ-12, 6-position modular jack that provides a connection
for devices on the SA bus, a Bluetooth Commissioning
Converter, Zigbee
®
wireless dongle, or an FX-ZFR1811
Wireless Router (depending on which bus the FX-PCX
is operating on).
The SA/FC bus port is connected internally to the SA/FC
bus terminal block. See
Table 4
for more information.
The SA/FC bus port pin assignment is shown in
Figure
6
.
Figure 6: Pin Number Assignments for Sensor, SA
Bus and FC Bus Ports on Controllers
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 4
for more
information about the Supply 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
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 controller does
not require an earth ground connection.
Wireless Network Applications
The controller can also be installed in a wireless
application using an FX-ZFR1811 Wireless Field Bus
Router.
To configure a controller for use with the FX-ZFR Series
Wireless Field Bus system:
Note:
FX-PCXs can talk wirelessly on the FC bus only.
5
FX-PCX37 Expansion Input/Output Module Installation Instructions
