Johnson Controls FX-PCA2611-0 Installation Instructions Manual

FX-PCA2611-0 Advanced Application Programmable
Controller Installation Instructions

Part No. 24-10143-403, Rev. EFX-PCA2611-0

Issued April 2016

Refer to the QuickLIT website for the most up-to-date version of this document.

Application

The FX-PCA2611-0 Advanced Application Programmable
Controller is part of the Facility Explorer Programmable
Controller (FX-PC) family. The FX-PCA26 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-PCA26 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.

FX-PCA26 controllers include an integral real-time clock,
which enables the controllers to monitor and control
schedules, calendars, and trends, and operate for
extended periods of time as stand-alone controllers when
offline from the system network.

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 BTL­tested 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.

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

1FX-PCA2611-0 Advanced Application Programmable Controller Installation Instructions

North American Emissions Compliance

Canada

This Class (A) digital apparatus meets all the
requirements of the Canadian Interference-Causing
Equipment Regulations.

Cet appareil numérique de la Classe (A) respecte toutes
les exigences du Règlement sur le matériel brouilleur
du Canada.

United States

This equipment has been tested and found to comply
with the limits for a Class A digital device pursuant to
Part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful
interference when this equipment is operated in a
commercial environment. This equipment generates,
uses, and can radiate radio frequency energy and, if not
installed and used in accordance with the instruction
manual, may cause harmful interference to radio
communications. Operation of this equipment in a
residential area may cause harmful interference, in which
case the users will be required to correct the interference
at their own expense.

Installation

Observe these guidelines when installing an
FX-PCA2611:

• Transport the controller in the original container to
minimize vibration and shock damage.

• Verify that all parts shipped with the controller.

• Do not drop the controller or subject it to physical
shock.

Mounting

Observe these guidelines when mounting an
FX-PCA2611:

• Ensure the mounting surface can support the
controller, DIN rail, and any user-supplied enclosure.

• Mount the controller horizontally on 35 mm DIN rail
whenever possible.

• Mount the controller in the proper mounting position
(Figure 1).

• Mount the controller on a hard, even surface
whenever possible in wall-mount applications.

• Use shims or washers to mount the controller securely
and evenly on the mounting surface.

• Mount the controller in an area free of corrosive
vapors and observe the Ambient Conditions
requirements in Table 10.

• Provide for sufficient space around the controller for
cable and wire connections for easy cover removal
and good ventilation through the controller (50 mm
[2 in.] minimum on the top, bottom, and front of the
controller).

• Do not mount the controller on surfaces prone to
vibration, such as duct work.

• Do not mount the controller in areas where
electromagnetic emissions from other devices or
wiring can interfere with controller communication.

Observe these additional guidelines when mounting an
FX-PCA2611 in a panel or enclosure:

• Mount the controller so that the enclosure walls do
not obstruct cover removal or ventilation through the
controller.

• Mount the controller so that the power transformer
and other devices do not radiate excessive heat to
the controller.

• Do not install the controller in an airtight enclosure.

Figure 1: Controller Mounting Positions

Parts Included

• one FX-PCA2611 controller with removable terminal
blocks (Power, SA, and FC bus are removable)

• one installation instructions sheet

Materials and Special Tools Needed

• three fasteners appropriate for the mounting surface
(M4 screws or #8 screws)

• one 20 cm (8 in.) or longer piece of 35 mm DIN rail
and appropriate hardware for DIN rail mount (only)

• small straight-blade screwdriver for securing wires in
the terminal blocks

2FX-PCA2611-0 Advanced Application Programmable Controller Installation Instructions

DIN Rail Mount Applications

Mounting the FX-PCA2611 controller horizontal on 35 mm
DIN rail is the preferred mounting method.

To mount a controller on 35 mm DIN rail:

1. Securely mount a 20 cm (8 in.) or longer section of
35 mm DIN rail horizontal and centered in the desired
space so that the controller mounts in the horizontal
position shown in Figure 1.

2. Pull the two bottom mounting clips outward from the
controller to the extended position (Figure 2).

3. Hang the controller on the DIN rail by the hooks at
the top of the (DIN rail) channel on the back of the
controller (Figure 2), and position the controller snugly
against the DIN rail.

4. Push the bottom mounting clips inward (up) to secure
the controller on the DIN rail.

To remove the controller from the DIN rail, pull the
bottom mounting clips out to the extended position
and carefully lift the controller off the DIN rail.

Wall Mount Applications

To mount an FX-PCA2611 directly on a wall or other flat
vertical surface:

to the wall or surface in a proper mount position and
mark the hole locations through the mounting clips.

3. Drill holes in the wall or surface at the marked
locations, and insert appropriate wall anchors in the
holes (if necessary).

4. Hold the controller in place, and insert the screws
through the mounting clips and into the holes (or
anchors). Carefully tighten all of the screws.

Important: Do not overtighten the mounting screws.

Overtightening the screws may damage
the mounting clips.

Figure 2: Back of Controller Showing Extended

Mounting Clips, DIN Rail Channel, and Mounting

Dimensions, mm (in.)

1. Pull the two bottom mounting clips outward and
ensure they are locked in the extended position as
shown in Figure 2.

2. Mark the mounting hole locations on the wall using
the dimensions in Figure 2 and one of the mount
positions shown in Figure 1. Or hold the controller up

3FX-PCA2611-0 Advanced Application Programmable Controller Installation Instructions

Figure 3: FX-PCA2611-0 Physical Features

Table 1: FX-PCA2611-0 Physical Features

Physical Feature: Description and ReferencesCallout

1

2

4

5

6

8

9

10

11

12

13

14

15

16

Binary Output (BO) Source Power Selection Jumpers: Position jumpers to select internal or external 24 VAC
supply power for Binary Outputs. (See Binary Output (BO) Source Power Selection Jumpers)

Device Address DIP Switch Block (See Setting the Device Addresses)

Mounting Clips (Three)3

Configurable Outputs (CO) Terminal Block: Can be defined as Voltage Analog Output (0-10 VDC) or Binary Output
(24 VAC Triac). (See Table 3)

Analog Output (AO) Terminal Block: Can be defined as Voltage Analog Output (0-10 VDC) Current Analog Output
(4-20 mA). (See Table 3)

24 VAC, Class 2 Supply Power Terminal Block (See Supply Power Terminal Block)

Cover Lift Tab (One of Two)7

FC Bus Terminal Block (See FC Bus Terminal Block)

SA Bus Terminal Block (See SA Bus Terminal Block)

Sensor Port: (SA Bus) RJ-12 6-Pin Modular Jack (See Sensor Port)

Binary Input (BI) Terminal Block: Dry Contact Maintained or Pulse Counter/Accumulator Mode (See Table 3)

Universal Inputs (UI) Terminal Block: Can be defined as Voltage Analog Input (0-10 VDC), Current Analog Input
(4-20 mA), Resistive Analog Inputs (0-600k ohm), or Dry Contact Binary Input. (See Table 3)

End-of-Line (EOL) Switch, located under the cover. (See Setting the End-of-Line (EOL) Switch)

LED Status Indicators (See Table 8)

FC Bus Port (RJ-12 6-pin Modular Jack) (See FC Bus Port)

Binary Outputs (BO) Terminal Block: 24 VAC Triac (See Table 3)

Wiring

Observe the following guidelines when wiring an
FX-PCA2611 controller:

4FX-PCA2611-0 Advanced Application Programmable Controller Installation Instructions

Risk of Electric Shock: Disconnect the power supply
before making electrical connections to avoid electric
shock.

Mise En Garde: Risque de décharge électrique:

Débrancher l'alimentation avant de réaliser tout
raccordement électrique afin d'éviter tout risque de
décharge électrique.

Input and Output Terminal Blocks

On most FX-PC controller models, all of the fixed input
terminal blocks are mounted on the bottom of the
controller, and the output terminal blocks are mounted
on the top of the controller. See Table 3 for more
information about I/O terminal functions, requirements,
and ratings.

FC Bus Terminal Block

The FC Bus terminal block is a blue, removable,
4-terminal plug that fits into a board-mounted jack.

Risk of Property Damage: Do not apply power to the
system before checking all wiring connections. Short
circuited or improperly connected wires may result in
permanent damage to the equipment.

Mise En Garde: Risque de dégâts matériels: Ne pas
mettre le système sous tension avant d'avoir vérifié tous
les raccords de câblage. Des fils formant un court-circuit
ou connectés de façon incorrecte risquent
d'endommager irrémédiablement l'équipement.

Important: Do not exceed the controller electrical

ratings. Exceeding controller electrical
ratings can result in permanent damage to
the controller and void any warranty.

Important: Use copper conductors only. Make all wiring

in accordance with local, national, and
regional regulations.

Important: Electrostatic discharge can damage

controller components. Use proper
electrostatic discharge precautions during
installation, setup, and servicing to avoid
damaging the controller.

Wire the removable FC bus terminal block plugs on the
controller, and other controllers in a daisy-chain
configuration using 3-wire twisted, shielded cable as
shown in Figure 4. See Comm Bus and Power Supply

Terminal Block Rating and Requirements Table for more

information.

Figure 4: FC Bus Terminal Block Wiring

For detailed information on configuring and wiring an
MS/TP Bus, FC bus, and SA bus, refer to the FX-PC

Series Controllers MS/TP Communications Bus Technical
Bulletin (LIT-12011670) or MS/TP Communications Bus
for BCM System Technical Bulletin (LIT-12011908). For

detailed information on wiring an N2 network, refer to the
N2 Communications Bus Technical Bulletin (LIT-636018).

FX-PCA Terminal Blocks and Bus Ports

See Figure 3 for terminal block and bus port locations on
the FX-PCA2611-0 controller. Observe the following
guidelines when wiring an FX-PCA2611 controller.

Note: The FC bus Shield (SHLD) terminal is isolated

and can be used to connect (daisy chain) the
shields for FC bus wiring.

SA Bus Terminal Block

The SA Bus terminal block is a brown, removable,
4-terminal plug that fits into a board-mounted jack.

Wire the removable SA Bus terminal block plugs on the
controller, and other SA bus devices in a daisy-chain
configuration using 4-wire twisted, shielded cable as
shown in Figure 5. See Comm Bus and Power Supply

Terminal Block Rating and Requirements Table for more

information.

5FX-PCA2611-0 Advanced Application Programmable Controller Installation Instructions

Figure 5: SA Bus Terminal Block Wiring

Figure 6: Pin Number Assignments for Sensor, SA

Bus and FC Bus Ports on Controllers

Sensor Port

Note: The SA PWR terminal supplies 15 VDC. The SA

PWR terminal can be used to connect (daisy
chain) the 15 VDC power leads on the SA bus.

FC Bus Port

The FC bus port on the front of the controller is an RJ-12,
6-position modular jack that provides a connection for

the FX-BTCVT Bluetooth® Commissioning Converter,
ZigBee®wireless dongle, or FX-ZFR1811 Wireless Field

Bus Router.

The FC bus port is connected internally to the FC bus
terminal block. See Comm Bus and Power Supply

Terminal Block Rating and Requirements Table for more

information. The FC bus port pin assignment is shown in

Figure 6.

Note: When the FX-PCA is configured for N2 network

communication, the FC bus port is not used.

The Sensor (SA Bus) port on the bottom of the controller
is an RJ-12, 6-position modular jack that provides a
connection for the Bluetooth Commissioning Converter,
the VAV Balancing Tool, specified network sensors, or
other SA Bus devices with RJ-12 plugs. When the FEC
FX-PCA is configured for N2 network communication,
you must download and commission the controller using
the SA Bus port.

An FX-DIS1710 Local Controller Display also can be
connected to the SA Bus port.

The Sensor port is connected internally to the SA bus
terminal block. See Comm Bus and Power Supply

Terminal Block Rating and Requirements Table for more

information. The Sensor Port pin assignment is shown
in Figure 6.

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 controller.

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 Comm Bus and

Power Supply Terminal Block Rating and Requirements
Table for more information about the Supply Terminal

Block.

6FX-PCA2611-0 Advanced Application Programmable Controller Installation Instructions

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

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

When configured for BACnet MS/TP communication, the
FX-PCA2611 controller can also be installed in a wireless
application using an FX-ZFR1811 Wireless Field Bus
Router.

To configure a controller for use with the FX-ZFR Series
Wireless Field Bus system:

1. Wire the input/output terminals and SA bus.

Note: In wireless network applications, do not

connect any wires to the FC bus terminal
block. (Connect the SA/FC terminal block on
an FX-PCX to an SA bus only.)

2. Connect the FX-ZFR1811 Wireless Field Bus Router
to the FC bus port (RJ-12 modular jack) on the front
of the controller.

3. Ensure that the controller's device address DIP
switches are set to the correct device address. See

Figure 9.

4. 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 termination diagrams provides details for wiring inputs and outputs to the controllers. See the figures in this
section for the applicable termination diagrams.

7FX-PCA2611-0 Advanced Application Programmable Controller Installation Instructions

Table 2: Termination Details

Type of Field
Device

Sensor

External Source

Internal Source

Input/Output

UITemperature

UIVoltage Input -

UIVoltage Input -

Termination DiagramsType of

(Self-Powered)

External Source
(Isolated)

UIVoltage Input

UICurrent Input -

8FX-PCA2611-0 Advanced Application Programmable Controller Installation Instructions