Johnson Controls FX-PCX47 User manual
FX-PCX47 Expansion Input/Output Module
Installation Instructions
Application
The FX-PCX47 controller is part of the Facility Explorer® FX-PC Series Programmable Controller
family. FX-PCX controllers expand the number of points connected to an FX-PCA, FX-PCG, or FX-PCV
programmable controller or to a supervisory controller.
FX-PCX47 controllers operate on an RS-485 BACnet® MS/TP Bus as BACnet Application Specific
Controllers (B-ASCs) and integrate into Johnson Controls® and third-party BACnet systems.
Note: At CCT Release 10.1 and later, a new capability was introduced allowing FX-PCVs, FX-
PCGs, and FX-PCAs to communicate by using either the BACnet or the N2 field bus networking
protocol. The I/O can be connected through the SA bus to a host controller that is using
either the BACnet or the N2 protocol. Only the BACnet protocol is supported when the I/O is
connected directly to the trunk using the FC bus.
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 a controller:
• 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.
Parts included
• One controller with removable terminal blocks (Power and SA/FC bus are removable)
• One installation instructions sheet
Part No. 24-10144-122 Rev. F
2019-03-22 (barcode for factory use only)
FX-PCX4711-x
*2410144122F*
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
Mounting
Observe these guidelines when mounting a controller:
• 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-PCX47 controller 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.
FX-PCX47 Expansion Input/Output Module Installation Instructions2
Figure 1: Controller mounting positions
DIN rail mount applications
Mounting the controller horizontal on 35 mm DIN rail is the preferred mounting method.
To mount an FX-PCX47 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 a controller directly on a wall or other flat vertical surface:
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 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).
3FX-PCX47 Expansion Input/Output Module Installation Instructions
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.)
FX-PCX47 Expansion Input/Output Module Installation Instructions4
IOM47 physical features
Figure 3: FX-PCX47 physical features
Table 1: FX-PCX47 physical features callouts and descriptions
Callout Physical feature description
1Binary Output (BO) Source Power Selection Jumper Pin Blocks, 3 – BO Jumper Pin
Blocks. (See Table 3.)
2Device Address DIP Switch Block. (See Setting the device addresses.)
3Mounting Clip (One of Three)
4Configurable Output (CO) Terminal Blocks, 4 – Configurable Outputs. (See Table 3.)
5Analog Output (AO) Terminal Block, 2 – Analog Outputs. (See Table 3.)
624 VAC, Class 2 Supply Power Terminal Block. (See Table 5.)
7Cover Lift Tab (One of Two). (See Removing the Controller cover.)
8SA Bus or FC Bus Terminal Block. (See Table 5.)
9Binary Input (BI) Terminal Block, 2 – Binary Inputs. (See Table 3.)
10 UI Terminal Blocks, 6 – Universal Inputs. (See Table 3.)
11 End-of-Line (EOL) Switch. (See Setting the End-of-Line (EOL) switch)
Note: The EOL Switch is located under the controller cover. You must remove the
cover to change the EOL switch position.
12 LED Status Indicators. (See Table 8.)
13 Sensor Actuator (SA) Bus / Field Controller (FC) Bus Port (RJ-12 6-pin Modular Jack). (See
SA/FC bus port.)
14 BO Terminal Block, 3 – Binary Outputs. (See Table 3.)
5FX-PCX47 Expansion Input/Output Module Installation Instructions
Wiring
Warning
Risk of Electric Shock:
Disconnect or isolate all power supplies before making electrical connections. More than one
disconnection or isolation may be required to completely de-energize equipment. Contact with
components carrying hazardous voltage can cause electric shock and may result in severe personal
injury or death.
Warning
Risque de décharge électrique:
Débrancher ou isoler toute alimentation avant de réaliser un branchement électrique. Plusieurs
isolations et débranchements sont peut-être nécessaires pour -couper entièrement l'alimentation
de l'équipement. Tout contact avec des composants conducteurs de tensions dangereuses risque
d'entraîner une décharge électrique et de provoquer des blessures graves, voire mortelles.
CAUTION
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.
CAUTION
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.
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 BCPro System Technical Bulletin (LIT-12011908).
FX-PCX47 Expansion Input/Output Module Installation Instructions6
Terminal blocks and bus ports
See Figure 3 for terminal block and bus port locations on the controller. Observe the following
guidelines when wiring a controller.
Input and Output terminal blocks
All of the 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.
SA/FC bus terminal block
An FX-PCX can be connected to a Sensor/Actuator (SA) bus or a Field Controller (FC) bus, but not to
both buses simultaneously. The SA/FC bus terminal block is a removable, 4-terminal plug that fits
into a board-mounted jack.
When connecting the FX-PCX to an FC bus, wire the bus terminal block plugs on the controller, and
the other controllers in a daisy-chain configuration using 3-wire twisted, shielded cable as shown in
Figure 4. See Table 5 for more information.
Figure 4: FC bus terminal block wiring
When connecting the FX-PCX to an SA bus, wire the 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 I/O wiring ratings and requirements table for more information.
7FX-PCX47 Expansion Input/Output Module Installation Instructions
Figure 5: SA bus terminal block wiring
Note:
The SA PWR/SHLD terminal does not supply 15 VDC. The SA PWR/SHLD terminal is isolated and
can be used to connect (daisy chain) the 15 VDC power leads on the SA bus (Figure 5) or the
cable shields on the FC bus (Figure 4).
The SA bus supervisor supplies 15 VDC to devices on the SA bus requiring power.
SA/FC bus port
The SA/FC bus port on the front of the controller is an RJ-12, 6-position modular jack that provides a
connection for devices on the SA bus, a Bluetooth® Commissioning Converter, or an FX-ZFR/ZFR Pro
Wireless Router (depending on which bus the FX-PCX is operating on).
The SA/FC bus port is connected internally to the SA/FC bus terminal block. See Table 5 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 Controllers
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.
FX-PCX47 Expansion Input/Output Module Installation Instructions8
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 5 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 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
The controller can also be installed in a wireless application using a wireless application using an
FX-ZFR1811 Wireless Field Bus Router.
To configure a controller for use with the FX-ZFR/ZFR Pro Series Wireless Field Bus system:
Note: FX-PCXs can communicate wirelessly on the FC bus only.
1. Connect the FX-ZFR1811 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.
See Setting the device addresses.
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.
9FX-PCX47 Expansion Input/Output Module Installation Instructions
Table 2: Termination details
Type of field device Type of
Input/
Output
Termination diagrams
Temperature Sensor UI
Voltage Input -
External Source
UI
Voltage Input -
Internal Source
UI
Voltage Input (Self-
Powered)
UI
Current Input -
External Source
(Isolated)
UI
Current Input -
Internal Source (2-
wire)
UI
FX-PCX47 Expansion Input/Output Module Installation Instructions10
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