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
About this task:
The controller can also be installed in a wireless application using an FX- ZFR/ZFR Pro Wireless Field Bus
Router.
To configure a controller for use with the ZFR/ZFR Pro Series Wireless Field Bus system:
Note:
FX-PCXs 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.
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-ZFR1811
Wireless Field Bus Router Installation Instructions (Part No. 24-10325-29)
.
Termination details
A set of Johnson Controls termination diagrams provides details for wiring inputs and outputs to
the controllers. See the figures in this section for the applicable termination diagrams.
Table 2: Termination details
Type of field
device
Type of
Input/
Output
Termination diagrams
Temperature
Sensor
UI
Voltage Input -
External Source
UI
FX-PCX17 and FX-PCX27 Expansion Input/Output Module Installation Instructions
10
