Johnson Controls FX-PCX2721 Bedienungsanleitung

Application

The FX-PCX2721 controller is part of the Facility Explorer

FX-PC Series Programmable Controller family. FX-PCXs

expand the number of input/output points connected to

either an FX-PCA, FX-PCG, FX-PCV programmable

controller or to a supervisory controller to monitor and

control a wide variety of HVAC equipment.

FX-PCX operate on an RS-485 BACnet®

Master-Slave/Token-Passing (MS/TP) Bus as BACnet

Application Specific Controllers (B-ASCs) and integrate

into Johnson Controls®and third-party BACnet systems.

Note: At FX-PCT Release 10.1, 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 operation of the FX-PCX Input/Output Module

is not affected by the selection of the BACnet or

the N2 protocol in the host controller.

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

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 an FX-PCX

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.

• 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).

1FX-PCX2721 Expansion Input/Output Module Installation Instructions

FX-PCX2721 Expansion Input/Output Module Installation

Instructions

FX-PCX2721-0

Part No. 24-10144-173, Rev. F

Issued August 2018

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

• 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 a

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.

Figure 1: Controller Mounting Positions

DIN Rail Mount Applications

Mounting the FX-PCX 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.

2FX-PCX2721 Expansion Input/Output Module Installation Instructions

Wall Mount Applications

To mount an FX-PCX 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).

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.)

3FX-PCX2721 Expansion Input/Output Module Installation Instructions

Figure 3: FX-PCX2721 Physical Features

Table 1: FX-PCX2721 Physical Features Callouts and Descriptions

Physical Feature: Description and ReferencesCallout

Analog Outputs (AOs) Terminal Block. (See Table 3)

Mounting Clip (Three Total)2

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

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

Cover Lift Tab (One of Two) (See Removing the Controller Cover)

Sensor Actuator (SA) Bus / Field Controller (FC) Bus Terminal Block (See SA/FC Bus Terminal Block)

Universal Inputs (UIs) Terminal Block (See Table 3)

LED Status Indicators (See Table 8)

Sensor Actuator (SA) Bus or Field Controller (FC) Bus Port (RJ-12 6-pin Modular Jack) (See SA/FC Bus Port)

4FX-PCX2721 Expansion Input/Output Module Installation Instructions

Wiring

Risk of Electric Shock: Disconnect or isolate all power

supplies before making electrical connections. More than

one disconnect 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.

Avertissement: 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.

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.

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).

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 controller 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

5for 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 Table

3for more information.

5FX-PCX2721 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, Zigbee®wireless dongle, or an FX-ZFR1811

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

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.

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 an FX-ZFR1811 Wireless Field Bus

Router.

To configure a controller for use with the FX-ZFR Series

Wireless Field Bus system:

Note: FX-PCXs can talk wirelessly on the FC bus only.

6FX-PCX2721 Expansion Input/Output Module Installation Instructions

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-ZFR 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

Termination DiagramsType of

Input/Output

Type of Field

Device

UITemperature Sensor

UIVoltage Input -

External Source

UIVoltage Input -

Internal Source

UIVoltage Input

(Self-Powered)

UICurrent Input -

External Source

(Isolated)

7FX-PCX2721 Expansion Input/Output Module Installation Instructions

Table 2: Termination Details

Termination DiagramsType of

Input/Output

Type of Field

Device

UICurrent Input -

Internal Source (2

wire)

UICurrent Input -

Internal Source (3

wire)

UICurrent Input -

External Source (in

Loop)

UIFeedback from

EPP-1000

UIDry Contact (Binary

Input)

AO0–20 VDC Output to

Actuator (External

Source)

8FX-PCX2721 Expansion Input/Output Module Installation Instructions

Table 2: Termination Details

Termination DiagramsType of

Input/Output

Type of Field

Device

AO0–10 VDC Output to

Actuator (Internal

Source)

AOAnalog Output

(Current)

AO4–20 mA Output to

Actuator

AOVoltage (Analog

Output)

AO4–20 mA Output to

Actuator

9FX-PCX2721 Expansion Input/Output Module Installation Instructions

Terminal Wiring Guidelines,

Functions, Ratings, and

Requirements

Input and Output Wiring Guidelines

Table 3 provides information and guidelines about the

functions, ratings, and requirements for the controller

input and output terminals; and references guidelines for

determining proper wire sizes and cable lengths.

In addition to the wiring guidelines in Table 3, observe

these guidelines when wiring controller inputs and

outputs:

• Run all low-voltage wiring and cables separate from

high-voltage wiring.

• All input and output cables, regardless of wire size or

number of wires, should consist of stranded, insulated,

and twisted copper wires.

• Shielded cable is not required for input or output

cables.

• Shielded cable is recommended for input and output

cables that are exposed to high electromagnetic or

radio frequency noise.

• Inputs/outputs with cables less than 30 m (100 ft)

typically do not require an offset in the software setup.

Cable-runs over 30 m (100 ft) may require an offset

in the input/output software setup.

Table 3: Controller Terminal Blocks, Functions, Ratings, Requirements, and Cables

Determine Wire Size and

Maximum Cable Length1

Function, Ratings, RequirementsTerminal

Label

Terminal Block

Label

Same as (Universal) INn

Note: Use 3-wire cable for

devices that source power from

the +15V terminal.

15 VDC Power Source for active (3-wire) input devices

connected to the Universal INnterminals.

Provides 100 mA total current

+15 VUNIVERSAL

(Inputs)

See Guideline Ain Table 4.

Analog Input - Voltage Mode (0–10 VDC)

10 VDC maximum input voltage

Internal 75k ohm Pull-down

INn

See Guideline Bin Table 4.

Analog Input - Current Mode (4–20 mA)

Internal 100 ohm load impedance

Note: A current loop fail-safe jumper can be positioned to

maintain a closed 4 to 20 mA current loop, even when the

power to the controller is interrupted or off. See UI Current

Loop Jumpers.

See Guideline Ain Table 4.

Analog Input - Resistive Mode (0–600k ohm)

Internal 12 V. 15k ohm pull up

Qualified Sensors: 0-2k ohm potentiometer, RTD (1k Nickel

[Johnson Controls®sensor], 1k Platinum, and A99B Silicon

Temperature Sensor) Negative Temperature Coefficient

(NTC) Sensor (10k Type L, 10k JCI Type II, 2.252k Type

II)

See Guideline Ain Table 4.

Binary Input - Dry Contact Maintained Mode

1 second minimum pulse width

Internal 12 V. 15k ohm pull up

Same as (Universal) INn

Universal Input Common for all Universal Input terminals

Note: All Universal ICOMnterminals share a common,

which is isolated from all other commons.

ICOMn

10FX-PCX2721 Expansion Input/Output Module Installation Instructions

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