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both wires around the outside of the ring and
back through the center opening as shown in
the following figure. Locate the ferrite ring as
near to the supply power terminal plug as pos-
sible while still allowing for a typical connection
to the controller with the terminal plug.
Figure 7: Wrapped ferrite ring
Wire the 24 VAC supply power wires from the
transformer to the HOT and COM terminals on the
terminal plug as shown in the following figure. The
middle terminal on the supply power terminal block
is not used. See Table 4 for more information about
the Supply Terminal Block.
Figure 8: 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 a ZFR/ZFR Pro Wireless Field Bus
Router.
Important: Wireless operation is not approved
for smoke control applications. Refer to the
Metasys System UL 864 UUKL Tenth Edition Smoke
Control System Technical Bulletin (LIT-12012487)
for detailed requirements and procedures
for installing, commissioning, and operating
UL 864 UUKL/UUKLC Listed Metasys system
devices.
To configure a controller for use with the ZFR/
ZFR Pro Series Wireless Field Bus system:
Note: IOMs can communicate wirelessly on an
FC bus only.
1.
Connect the ZFR/ZFR Pro 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
3.
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 System
Product Bulletin (LIT-12011336).
IOM1711 and IOM2711 Input/Output Module Installation Guide
addresses.
7
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