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SA/FC bus port
The SA/FC bus port on the front of the expansion
module is an RJ-12, 6-position modular jack that provides
a connection for devices on the SA bus, a Wireless
Commissioning Converter, a ZFR/ZFR Pro Wireless Router
(depending on which bus the IOM 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 Expansion Modules
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 expansion module.
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
expansion module 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
expansion module does not require an earth ground
connection.
Wireless network applications
The expansion module 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 expansion module for use with the
ZFR/ZFR Pro Series Wireless Field Bus system:
Note: IOMs can talk wirelessly on the 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 expansion module.
2.
Ensure that the expansion module'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 expansion module.
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 expansion
module 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 expansion module inputs
and outputs:
• Run all low-voltage wiring and cables separate from
high-voltage wiring.
IOM3711 Input/Output Module Installation Guide
addresses.
5
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