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.
Wireless network applications
When configured for BACnet MS/TP communication, the
controller can also be installed in a wireless application
using a ZFR/ZFR Pro Wireless Field Bus Router.
To configure a controller for use with the ZFR/ZFR Pro
Series Wireless Field Bus system:
1.
Wire the input/output terminals and SA bus.
Note:
In wireless network applications, do not
connect any wires to the FC bus terminal block.
(Connect the SA/FC terminal block on an IOM to an
SA bus only.)
2.
Connect the ZFR/ZFR Pro Wireless Field Bus Router to
the FC bus port (RJ-12 modular jack) on the front of
the controller.
3.
Ensure that the controller's device address DIP
switches are set to the correct device address. See
4.
Set DIP switch 128 to ON, which enables wireless
operation on the controller.
For more information on the ZFR Pro Wireless Field Bus
system, refer to the
WNC1800/ZFR182x Pro Series Wireless
Field Bus System Product Bulletin (LIT-12012320)
.
For more information on the ZFR 1800 Wireless Field Bus
system, refer to the
ZFR1800 Series Wireless Field Bus Sys-
tem Product Bulletin (LIT-12011336)
.
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; and references guidelines for
determining proper wire sizes and cable lengths.
In addition to the wiring guidelines in Table 2, 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.
FAC2611 Advanced Application Field Equipment Controller Installation Guide
6
