Johnson Controls FX-PCV Series Manuel utilisateur

FX-PCV Programmable Variable Air

Volume Box Controllers Installation

Instructions

Applications

The FX-PCV1610/1620 controllers are part of the Facility Explorer® Series Programmable Controller

(FX-PC) family. FX-PCV controllers feature an integral 4 Nm damper actuator and Differential

Pressure Transducer. FX-PCV controllers run pre-engineered and user-programmed applications

required to monitor and operate a wide variety of VAV boxes.

The FX-PCV controllers operate on an RS-485 BACnet® MS/TP Bus as BACnet Application Specific

Controllers (B-ASCs) and integrate into the web-based Facility Explorer system.

North American Emissions Compliance

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.

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.

Installation

Observe these guidelines when installing an FX-PCV controller:

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

FX-PCV Box controller.

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

Parts included

• One FX-PCV controller with removable bus and power terminal blocks

• One installation instructions sheet

Materials and special tools needed

• One screw or other type of fastener appropriate for the mounting surface

Part No. 24-10143-179 Rev. C

2019-03-22 (barcode for factory use only)

FX-PCV1610-0, FX-PCV1620-0

*2410143179C*

• Several 6 mm (1/4 in.) female spade terminals for input and output wiring

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

Mounting

Observe these guidelines when mounting an FX-PCV.

Important: When the air supply to the VAV box is below 10°C (50°F), make sure that any

condensation on the VAV box, particularly on the damper shaft, does not enter the FX-

PCV electronics. Mount the FX-PCV vertically above the damper shaft to allow any shaft

condensation to fall away from the FX-PCV. Additional measures may be required in some

installations.

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

• Mount the controller on a hard, even surface whenever possible.

• 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 in

the Technical specifications section.

• Provide sufficient space around the controller for cable and wire connections and good

ventilation through the controller. Leave a minimum of 50 mm (2 in.) around the top, bottom,

sides, and front of the controller.

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

where electromagnetic emissions from other devices or wiring can interfere with controller

communication.

On panel or enclosure mount applications, observe these additional guidelines:

• Do not install the controller in an airtight 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.

To mount the FX-PCV controller:

1. Place the controller in the proper mounting position on the damper shaft so that the wiring

connections are easily accessible. Make sure the controller base is parallel to the VAV box

(perpendicular to the damper shaft). If needed, use a spacer to offset tipping of the FX-PCV

controller caused by the shaft bushings.

2. Secure the self-drilling No. 10 screw through the FX-PCV controller mounting slot with a power

screwdriver and 100 mm (4 in.) extension socket. Otherwise, use a punch to mark the position

of the shoulder washer, and then drill a hole into the VAV box using a 3.5 mm (9/64 in.) drill bit.

Insert the mounting screw, and tighten against the washer.

Important: Do not overtighten the screws, or the threads may strip. If mounting to the

VAV box, make sure the screws do not interfere with damper blade movement.

3. Locate the damper position using the typical marking on the end of the damper shaft.

FX-PCV Programmable Variable Air Volume Box Controllers Installation Instructions2

Figure 1: Typical damper end shaft Iocns

4. Note the direction, clockwise (CW) or counterclockwise (CCW), required to close the damper.

Grasp the damper shaft firmly with pliers and either manually close the damper (for 90° boxes)

or manually open the damper (for 45° or 60° boxes).

5. Push down and hold the Manual Override button (Figure 2), and turn the FX-PCV controller

coupler until it contacts the mechanical end-stop at either the fully closed (90° boxes) or fully

open (45° and 60° boxes) position.

6. If the damper for a 90° box closes CCW, rotate the coupler to the CCW mechanical limit. If the

damper for a 90° box closes CW, rotate the coupler to the CW mechanical limit. The open end-

stop is automatically set for 90° boxes. For 45° and 60° boxes, hard stops must be provided

at both fully closed and fully open damper positions. By installing the FX-PCV controller at the

fully open position, the FX-PCV controller provides the open stop for 45° and 60° boxes. The

closed damper seal provides the fully closed stop.

7. All models are compact in size and are easily installed on VariableAir Volume (VAV) boxes with a

round shaft up to 13 mm in diameter,or a 10 mm square shaft.Tighten the square coupler bolt

to the shaft using an 8 mm (5/16 in.) wrench or 10 mm (3/8 in.) 12-point socket. Tighten to 11

to 15 N·m (100 to 130 lb·in).

8. Loop the pneumatic tubing to include a trap for condensation. Attach the tubing from the FX-

PCV controller to the VAV box pickup. The HIGH (red) tubing is connected to the inlet or high-

pressure side and the clear tubing to the low side (Figure 2).

9. Push the manual release button, and turn the actuator coupling manually to ensure that the

actuator can rotate from fully closed to fully open positions without binding.

10. Complete the mounting by rotating the damper to the fully open position.

CAUTION

Risk of Property Damage

Rotate the damper to the full-open position before starting the air handler. Failure to rotate the damper

to the full-open position may result in damage to the VAV box or ductwork when the air handler is

started.

CAUTION

Mise En Garde: Risque de dégâts matériels

Faire pivoter le registre pour le placer en position d'ouverture complète avant de démarrer l'unité de

traitement d'air. Le non-respect de cette directive risque d'endommager le caisson de l'unité à volume

d'air variable (VAV) ou le réseau de conduites au démarrage de l'unité de traitement d'air.

3FX-PCV Programmable Variable Air Volume Box Controllers Installation Instructions

Wiring diagram

Figure 2: FX-PCV Controller physical features and wiring terminations

Table 1: FX-PCV Controller physical features

Number Feature

1 Pneumatic tubing

2 Controller coupler

3 Coupler bolt

4 Manual override switch

5 Binary Outputs (24 VAC Triacs)

6 Configurable outputs can be defined as:

• Voltage Analog Output (0-10 VDC)

• Binary Output (24 VAC Triac)

7 24 VAC, Class 2 Supply Power Terminal Block

8 Anti-rotation slot

9 LED Status Indicators

10 FC Terminal Block

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

12 SA Terminal Block

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

FX-PCV Programmable Variable Air Volume Box Controllers Installation Instructions4

Table 1: FX-PCV Controller physical features

Number Feature

14 Device Address DIP Switch Block

15 Universal Input can be defined as:

Voltage Analog Input (0-10 VDC)

• Resistive Analog Inputs (0-600k ohm)

• 0-2K Potentiometer

• RTD: 1k Nickle 1k Platinum or A99B SI

• NTC: 10k Type L 10k JCI Type II, or 2.252k Type II

Dry Contact Binary Input

Wiring

CAUTION

Risk of Electric Shock

Disconnect the power supply before making electrical connections to avoid electric shock.

CAUTION

Mise En Garde: Risque de décharge électrique

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

décharge électrique.

Important: Do not connect supply power to the controller before finishing wiring and

checking all wiring connections. Short circuits or improperly connected wires can result in

damage to the controller and void any warranty.

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, or SA bus, refer to the FX-

PC Series Controllers MS/TP Communications Bus Technical Bulletin (LIT-12011670).

FX-PCV terminals and bus ports

See Figure 2 for input and output terminal and bus port locations on the FX-PCV controller. Observe

the following guidelines when wiring an FX-PCV controller.

5FX-PCV Programmable Variable Air Volume Box Controllers Installation Instructions

Input and Output terminals

The input spade terminals are located on the side of the FX-PCV near the device address switch. The

output spade terminals are located on the opposite side of the controller near the power supply

terminal block. See Table 2 for more information.

FC bus terminal block

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

Wire the removable FC Bus terminal block plugs on the FX-PCV and other field controllers in a daisy-

chain configuration using 3-wire twisted, shielded cable as shown in Figure 3. See Table 5 for more

information.

Note: The Shield terminal (SHLD) on the FC Bus terminal block is isolated and can be used to

connect the cable shields on the bus (Figure 3).

Figure 3: FC bus terminal block 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 FX-PCV and other SA Bus devices in a daisy-

chain configuration using 4-wire twisted, shielded cable as shown in Figure 4. See Table 5 for more

information.

Figure 4: SA bus terminal block wiring

FX-PCV Programmable Variable Air Volume Box Controllers Installation Instructions6

Sensor port

The Sensor (SA Bus) port on the left side of the FX-PCV (Figure 2) is an RJ-12, 6-position modular jack

that provides a connection for the VAV Balancing Tool, specified network sensors, or other SA Bus

devices with RJ-12 plugs.

The Sensor port is connected internally to the SA Bus terminal block. See Table 5 for more

information. The Sensor Port pin assignment is shown in Figure 5.

Figure 5: Pin number assignments for sensor, SA bus, and FC bus ports on FX-PCVs

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 bottom right of the FX-PCV.

Wire the 24 VAC supply power wires from the transformer to the HOT and COM terminals on the

terminal plug as shown in Figure 6. The middle terminal on the supply power terminal block is not

used. See Table 5 for more information.

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 FX-PCV 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 FX-PCV does not require an earth ground connection.

Figure 6: 24 VAC supply power terminal block wiring

7FX-PCV Programmable Variable Air Volume Box Controllers Installation Instructions

To wire the FX-PCV controller:

1. Terminate wiring per engineering drawings.

2. Wire network sensors and other devices to the FX-PCV'sSA Bus.

3. Wire the FC Bus in a daisy chain.

4. Ensure that the FX-PCV’s device address DIP switches are set to the appropriate device address.

(See Setting the device address.)

5. Connect the FX-PCV controller to 24 VAC, Class 2 power.

FX-PCV terminal functions, ratings, requirements, and wiring

guidelines

Input and Output wiring guidelines

Table 2 provides information about the functions, ratings, and requirements for the FX-PCV input

and output terminals; and references guidelines for determining proper wire sizes and cable

lengths.

In addition to the wiring guidelines in Table 2, observe these guidelines when wiring FX-PCV 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 twisted,

insulated, and stranded 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.

• Cable runs that are less than 30 m (100 ft) typically do not require an offset in the input/output

software setup. Cable runs that are over 30 m (100 ft) may require an offset in the input/output

software setup.

Input and Output wiring guidelines tables

Table 2: I/O terminal blocks, functions, ratings, requirements, and cables

Terminal block

label

Terminal

labels

Function, ratings, and

requirements

To determine wire size

and maximum cable

length

UNIVERSAL

(Inputs)

+15 V 15 VDC Power Source for active (3-

wire) input devices connected to the

Universal INn terminals.

Provides 100 mA total current.

Same as (Universal)

INn.

Note: Use 3-wire

cable for devices

that source power

from the +15 V

terminal.

FX-PCV Programmable Variable Air Volume Box Controllers Installation Instructions8

Table 2: I/O terminal blocks, functions, ratings, requirements, and cables

Terminal block

label

Terminal

labels

Function, ratings, and

requirements

To determine wire size

and maximum cable

length

Analog Input - Voltage Mode (0–10

VDC)

10 VDC maximum input voltage

Internal 75k ohm Pulldown

See Guideline A in Table

INn

Analog Input - Resistive Mode (0–

600k ohm)

Internal 12 V, 15k ohm pull up

Qualified Sensors: 0–2k

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 is

equivalent to Type L) or 2.252K Type II

See Guideline A in Table

ICOMnUniversal Input Common for all

Universal IN terminals

Note: All Universal ICOMn

terminals share a common,

which is isolated from all other

commons.

Same as (Universal)

INn.

BINARY

(Outputs)

OUTnBinary Output - 24 VAC Triac

(Internal Power)

Sources internal 24 VAC power (24~

HOT)

See Guideline C in Table

9FX-PCV Programmable Variable Air Volume Box Controllers Installation Instructions

Table 2: I/O terminal blocks, functions, ratings, requirements, and cables

Terminal block

label

Terminal

labels

Function, ratings, and

requirements

To determine wire size

and maximum cable

length

OCOMnBinary Output - 24 VAC Triac

(Internal Power)

Connects OCOMn to 24~ COM when

activated.

Internal Power Source:

30 VAC maximum voltage to load

0.5 A maximum output current

1.3 A at 25% duty cycle

Maximum 6 cycles/hour with M9220-

BGx-3

40 mA minimum load current

Analog Output - Voltage Mode (0–10

VDC)

10 VDC maximum output voltage

10 mA maximum output current

External 1k to 50K ohm load required

See Guideline A in Table

CONFIGURABLE

(Outputs)

OUTn

Binary Output 24 VAC Triac

Connects OUT to OCOM when

activated.

External Power Source:

30 VAC maximum voltage to load

0.5 A maximum output current

1.3 A at 25% duty cycle

Maximum 6 cycles/hour with M9220-

BGx-3

40 mA minimum load current

See Guideline C in Table

FX-PCV Programmable Variable Air Volume Box Controllers Installation Instructions10

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