Johnson Controls FX-PCX3721, Руководство по установке

Страница: 6 / 14

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-ZFR 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.
1. Connect the FX-ZFR1811 Wireless Field Bus Router
to the FC bus port (RJ-12 modular jack) on the front
of the controller.
2. Ensure that the controller's device address DIP
switches are set to the correct device address. See
Setting the Device Addresses .
3. Set DIP switch 128 to ON, which enables wireless
operation on the controller.
For more information on installing a controller in a
wireless configuration, refer to the
FX-ZFR Series
Wireless Field Bus System Technical Bulletin
(LIT-12011660)
.
Termination Details
A set of Johnson Controls termination diagrams provides details for wiring inputs and outputs to the controllers. See
Table 2 in this section for the applicable termination diagram.
Table 2: Termination Details
Termination Diagrams Type of
Input/Output Type of Field Device
BI Dry Contact (Binary Input)
Terminal Wiring Guidelines,
Functions, Ratings, and
Requirements
Input and Output Wiring Guidelines
Table 3 provides information and guidelines about the
functions, ratings, and requirements for the controller
input and output terminals; and references guidelines for
determining proper wire sizes and cable lengths.
In addition to the wiring guidelines in Table 3 , observe
these guidelines when wiring 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.
• Shielded cable is not required for input or output
cables.
• Shielded cable is recommended for input and output
cables that are exposed to high electromagnetic or
radio frequency noise.
• Inputs/outputs with cables less than 30 m (100 ft)
typically do not require an offset in the software setup.
Cable runs over 30 m (100 ft) may require an offset
in the input/output software setup.
6 FX-PCX3721 Expansion Input/Output Module Installation Instructions