Johnson Controls FX-PCA3611 Installation Instructions Manual

FX-PCA3611 Advanced Application Programmable Controller
Installation Instructions
FX-PCA3611
Application
The FX-PCA3611 Advanced Application Programmable
Controller is part of the Facility Explorer Programmable
Controller (FX-PC) family. The FX-PCA36 Series
controllers run pre-engineered and user-programmed
applications and provide the inputs and outputs required
to monitor and control a wide variety of HVAC equipment.
FX-PCA36 controllers operate on an RS-485 BACnet®
Master-Slave/Token-Passing (MS/TP) Bus as BACnet
Advanced Application Controllers (B-AACs) and integrate
into Johnson Controls® and third-party BACnet systems.
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-PCG, FX-PCX, and FX-PCV controllers are BTL-
tested and listed as BACnet Application Specific
Controllers (B-ASCs). FX-PCA field controllers are
BTL-listed as BACnet Advanced Application Controllers
(B-AACs). The NS Series Sensors are BTL-listed as
BACnet Smart Sensors (B-SSs).
Release 10.1 of FX-PCT and later 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.
FX-PCA3611 Advanced Application Programmable Controller Installation Instructions
Part No. 24-10143-616, Rev. C
Refer to the QuickLIT website for the most up-to-date version of this document.
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 pass through in the commissioning
mode
• do not support remote downloading or commissioning
using BACnet routing
• do not support wireless connection to the N2 bus
Fast Persistence
Persistence on the FX-PCA3611-0 model has been
significantly upgraded and now includes a fast persistence
feature that allows you to retain data values at a
configurable interval, up to once per second. Persistence
refers to how often samples of data are stored locally.
This upgrade to the persistence feature ensures that in
the event of a problem, such as a loss of power, more
recent data can be retrieved up to the rate that the data
is persisted, minimizing the potential loss of data. When
power is restored, previously persisted data, up to the
rate of persistence, is still available and accessible. When
persistence is configured for once per second, you risk
losing only the most recent one second of data before
the power loss. Persisting data may be essential for
situations that require greater data accuracy. This may
include certain methods of utility data collection and
billing.
Attributes that can be persisted in the FX-PCA3611-0
include: Counter Input Present Value Attributes, Binary
Input, Binary Output, and Binary Value COS Counts and
Active Time Attributes, and PID/PRAC tuning parameters.
Issued August 2018
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