FX-PCV1656 Programmable VAV Box VAV Controllers
Installation Instructions
Part No. 24-10143-829, Rev. A
Issued April 2016
Refer to the
for the most up-to-date version of this document.
Applications
The FX-PCV1656 controller with ball valve linkage is
intended to be field mounted to Johnson Controls
®
VG1000 Series Ball Valves 1/2 through 1 in. (ordered
separately). The controller is well suited for applications
such as chilled beams and fan coils. The FX-PCV1656
controller is for use on Johnson Controls VG1000 1/2
through 1 in. valves only.
Important:
Use this FX-PCV1656 controller only to
control equipment under normal operating
conditions. Where failure or malfunction of
the FX-PCV1656 controller could lead to
personal injury or property damage to the
controlled equipment or other property,
additional precautions must be designed
into the control system. Incorporate and
maintain other devices, such as supervisory
or alarm systems or safety or limit controls,
intended to warn of or protect against failure
or malfunction of the FX-PCV1656
controller.
Switchable Communications
Protocols
By default, the FX-PC family controllers and network
sensors communicate using the standard BACnet
®
protocol, based on the ANSI/ASHRAE 135-2004.
The BACnet protocol is a standard for ANSI, ASHRAE,
and the International Standards Organization (ISO) for
building controls.
FX-PCV controllers are BTL-tested and listed as BACnet
Application Specific Controllers (B-ASCs).
Release 10.1 and higher of FX-PCT can be used to switch
the Field Bus communications protocol in FX-PC
Controllers to be either the standard BACnet
®
Master-Slave/Token-Passing (MS/TP) or the N2 protocol.
BACnet MS/TP is the default communications protocol
for all new controllers. Switchable communications
protocols provide a cost-effective upgrade and
modernization path for customers with existing N2
controllers. The
Modernization Guide for Legacy N2
Controllers (LIT-12012045)
and the controller-specific
documentation provide installation and commissioning
support and include tips for efficient and safe
replacement. Refer to the
N2 Compatibility Options
chapter of the
Controller Tool Help (LIT-12011147)
for
information about mapping N2 Objects in controllers with
switchable communications protocols.
The N2-capable FX-PC controllers can be used as
functional replacements for legacy N2 controllers. The
N2-capable FX-PC controllers:
•
have the I/O quantities and characteristics of the
FX-PC family controllers
•
must be programmed with FX-PCT, which has
programming capabilities that are similar (but not
identical) to HVACPro, GX9100, GPL, and other
legacy tools
•
support SA Bus devices
•
support FX-WRZ wireless sensors from the controller
using the FX-WRZ7860 receiver when configured for
BACnet MS/TP communication
The N2-capable FX-PC controllers:
•
do not support Zone Bus (for example, TMZ sensors
and M100 actuators)
•
do not support passthrough in the commissioning
mode
•
do not support remote downloading or commissioning
using BACnet routing
•
do not support wireless connection to the N2 bus
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FX-PCV1656 Programmable VAV Box VAV Controllers Installation Instructions
