Johnson Controls FX-PCG26 Installation Instructions Manual

FX-PCG26 General Purpose Programmable

Controller Installation Instructions

Application

The FX-PCG controller is part of the Facility Explorer® Programmable Controller (FX-PC) family.
These controllers run pre-engineered and user-programmed applications and provide the inputs
and outputs required to monitor and control a wide variety of HVAC and other facility equipment.

The FX-PCG 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.

The FX-PCG controller is available with or without an integral LCD and push button user interface.

Switchable communications protocols

The FX-PC Family Controllers and network sensors communicate using the standard BACnet
protocol, based on the ANSI/ASHRAE 135-2008. 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 Field controllers are BTL-listed as BACnet Application Specific
Controllers (B-ASCs). FX-PCA field controllers and the PCV1930 Field Controller 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 the Controller Configuration Tool (CCT) 13.0 and later can be used to switch the
Field Bus communications protocol in supported FX-PC Controllers to be either the standard
BACnet MS/TP or the N2 protocol. All new controllers use either BACnet MS/TP as the default
communications protocol, or BACnet/IP. Switchable communications protocols in the MS/TP
models 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 CCT 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 passthrough in the commissioning mode

• do not support remote downloading or commissioning using BACnet routing

• do not support wireless connection to the N2 bus

Part No. 24-10143-160 Rev G

2019-03-22

*2410143144G*

(barcode for factory use only)

FX-PCG2611-x, FX-PCG2621-x

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-PCG 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 FX-PCG controller with removable terminal blocks (Power, SA bus, 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

Mounting

Observe these guidelines when mounting an FX-PCG 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.

FX-PCG26 General Purpose Programmable Controller Installation Instructions2

• 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. See Technical specifications.

• 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-PCG 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: FX-PCG2621 mounting positions

DIN rail mount applications

Mounting the FX-PCGCH-PCG 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 appropriate location so that the controller mounts in the horizontal position. .

2. Pull the two bottom mounting clips outward from the controller to the extended position. See

Figure 1

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, and position the controller snugly against the DIN rail. See on page .

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.

3FX-PCG26 General Purpose Programmable Controller Installation Instructions

Wall mount applications

To mount an FX-PCG 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.

Mounting features and dimensions

Figure 2: Back of Controller showing extended mounting

clips, DIN rail channel, and mounting dimensions, mm (in.)

FX-PCG26 General Purpose Programmable Controller Installation Instructions4

FX-PCG2621 physical features

Figure 3: FX-PCG2621 physical features

Table 1: FX-PCG2621 physical features

Callout Physical feature: description and references

1 Binary Outputs - 24 VAC triacs

2 Binary Output Source Power Selection Jumpers - Live 24 VAC on Exposed Jumper

Pins

3 Device Address DIP Switch Block

4 Configurable Outputs - can be defined as: Voltage Analog Output (0-10 VDC), Binary

Output (24 VAC Triac)

5 Analog Outputs - can be defined as: Voltage Analog Output (0-10 VDC), Current

Analog Output (4-20 mA)

6 24 VAC, Class 2 Supply Power - Terminal Block

7 Cover Life Tab -

See Removing the controller cover for more information.

8 Display Navigation Buttons - (Not available on all FX-PCG models)

9 LCD Display Area - (Not available on all FX-PCG models)

10 FC Bus - Terminal Block

5FX-PCG26 General Purpose Programmable Controller Installation Instructions

Table 1: FX-PCG2621 physical features

Callout Physical feature: description and references

11 SA Bus - Terminal Block. See SA bus terminal block

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

13 Binary Inputs - can be defined as: Dry Contact Maintained Pulse Counter Mode (50 Hz

at 50% duty cycle)

14 Universal Inputs - can be defined as: Voltage Analog Input (0-10 VDC), Current

Analog Input (4-20 mA), 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

15 LED Status Indicators - See Table 9 for more information.

16 FC Bus Port - RJ-12 6-Pin MModular Jack. See FC Bus port for more information.

17 Cover Lift Tab

Wiring

CAUTION

Risk of Electric Shock.

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

Risque de décharge électrique.

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

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.

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.

FX-PCG26 General Purpose Programmable Controller Installation Instructions6

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).

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 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 4 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.

Wire the removable FC bus terminal block plugs on the controller, and other controllers in a daisy­chain configuration using 3-wire twisted, shielded cable as shown below. See Table 6 for more
information.

Figure 4: FC bus terminal block wiring

7FX-PCG26 General Purpose Programmable Controller Installation Instructions

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 the following figure. See
Table 6 for more information.

Figure 5: SA bus terminal block wiring

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, or FX-ZFR1811 Wireless Field
Bus Router.

The FC bus port is connected internally to the FC bus terminal block. See Table 6 for more
information. The FC bus Port pin assignment is shown in Figure 6.

FX-PCG26 General Purpose Programmable Controller Installation Instructions8

Figure 6: Pin number assignments for sensor, and SA bus ports on controllers

Sensor port

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 is configured for N2 communication, the SA Bus port must be used to download and
commission the controller. An FX-DIS Local Controller Display also can be connected to the SA Bus
port (but only on FX-PCG models without integral display and push buttons).

The Sensor port is connected internally to the SA bus terminal block. See Table 6 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 board­mounted 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 below. The middle terminal on the supply power terminal block is not used.
See Table 6 for more information about the Supply Terminal Block.

9FX-PCG26 General Purpose 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 FX-PCG does not require an earth ground connection.

Wireless network applications

The controller can also be installed in a wireless application using an FX-ZFR 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 a PCX to an SA bus only.)

2. Connect the FX-ZFR181x or FX-ZFR182x Wireless Field Bus Router to the FC bus port (RJ-12

FX-PCG26 General Purpose Programmable Controller Installation Instructions10

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 Setting the device addresses.

4. Set DIP switch 128 to ON, which enables wireless operation on the FX-PCG.
For more information on the ZFR Pro Wireless Field Bus system, refer to the WNC1800/ZFR182x
Pro Series Wireless Field Bus System Product Bulletin (LIT-12012320).

For more information on the ZFR 1800 Wireless Field Bus system, refer to the ZFR1800 Series
Wireless Field Bus System Product Bulletin (LIT-12011336).

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

Type of field
device

Temperature
Sensor

Voltage Input ­External Source

Voltage Input ­Internal Source

Type of
Input/
Output

UI

UI

UI

Termination diagrams

Voltage Input
(Self-Powered)

UI

11FX-PCG26 General Purpose Programmable Controller Installation Instructions

Table 2: Termination details

Type of field
device

Current Input ­External Source
(Isolated)

Current Input ­Internal Source
(2-wire)

Current Input ­Internal Source (3
wire)

Type of
Input/
Output

UI

UI

UI

Termination diagrams

Current Input ­External Source
(in Loop)

Feedback from
EPP-1000

Dry Contact
(Binary Input)

UI

UI

FX-PCG26 General Purpose Programmable Controller Installation Instructions12

Table 2: Termination details

Type of field
device

0–10 VDC Output
to Actuator
(External Source)

0–10 VDC Output
to Actuator
(Internal Source)

4–20 mA Output
to Actuator

Type of
Input/
Output

Termination diagrams

4–20 mA Output
to Actuator

Voltage (Analog
Output)

13FX-PCG26 General Purpose Programmable Controller Installation Instructions

Table 2: Termination details

Type of field
device

Analog Output
(Current)

24 VAC Triac
Output (Switch
Low, External
Source)

Incremental
Control to
Actuator (Switch
Low, Externally
Sourced)

Type of
Input/
Output

Termination diagrams

24 VAC Binary
Output (Switch
High, Externally
Sourced)

Incremental
Control to
Actuator (Switch
High, Externally
Sourced)

Incremental
Control to
Actuator (Switch
Low, Externally
Sourced)

FX-PCG26 General Purpose Programmable Controller Installation Instructions14

Table 2: Termination details

Type of field
device

24 VAC Binary
Output (Switch
Low, Externally
Sourced)

Incremental
Control to
Actuator (Switch
High, Externally
Sourced)

24 VAC Binary
Output (Switch
High, Externally
Sourced)

Type of
Input/
Output

Termination diagrams

Network Stat
with Phone Jack
(Fixed Address =

199)

15FX-PCG26 General Purpose Programmable Controller Installation Instructions

Table 2: Termination details

Type of field
device

Network Stat
with Terminals
Addressable

Network Stat
with Terminals
(Fixed Address =

199)

Type of
Input/
Output

Termination diagrams

Terminal wiring guidelines, functions, ratings, and
requirements

Input and Output wiring guidelines

The next sections provide information and guidelines about the functions, ratings, and
requirements for the controller input and output terminals; it also references guidelines for
determining proper wire sizes and cable lengths.

In addition to the wiring guidelines, 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.

FX-PCG26 General Purpose Programmable Controller Installation Instructions16

FX-PCG2511 and FX-PCG26 point type counts

The following table shows the different point types and counts available in the FX-PCG2511 and FX­PCG26 Series controllers.

Table 3: FX-PCG2511 and FX-PCG26 point type counts per model

Point types Signals accepted FX-PCG2511

(Asia/Europe only
model)

Universal Input (UI) Analog Input, Voltage Mode, 0–

10 VDC

Analog Input, Current Mode, 4–
20 mA

Analog Input, Resistive Mode,
0–2k ohm, RTD (1k NI [Johnson
Controls], 1k PT, A99B SI), NTC
(10k Type L, 2.252k Type 2)

Binary Input, Dry Contact
Maintained Mode

Binary Input (BI) Dry Contact Maintained Mode

Pulse Counter/Accumulator
Mode (High Speed), 100 Hz

Analog Output (AO) Analog Output, Voltage Mode,

0–10 VDC

Analog Output, Current Mode,
4–20 mA

Binary Output (BO) 24 VAC Triac 2 (Ext Power only) 3

Configurable Output
(CO)

Analog Output, Voltage Mode,
0–10 VDC

4 (Does not support
Current Mode)

6 2

2 (Voltage Only) 2

2 4

FX-PCG26

6

Binary Output Mode, 24 VAC
Triac

FX-PCG2511 and FX-PCG26 I/O wiring ratings and
requirements table

The following table shows the input/output requirements and ratings for the FX-PCG2511 and FX­PCG26 Series controllers.

17FX-PCG26 General Purpose Programmable Controller Installation Instructions

Table 4: FX-PCG2511 and FX-PCG26 terminal blocks, functions, ratings, requirements, and
cables

Terminal block
label

UNIVERSAL

(Inputs)

Terminal
label

Function, ratings,
requirements

+15 V 15 VDC Power Source for

active (3-wire) input devices
connected to the Universal INn
terminals.

Provides 100 mA total current

INn

Analog Input - Voltage Mode
(0–10 VDC)

10 VDC maximum input
voltage

Internal 75k ohms Pull-down

Analog Input - Current Mode
(4–20 mA)

Internal 100 ohms 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 the

Universal Input current
loop jumpers section.

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

Determine wire size and
maximum cable length

Same as (Universal) INn

Note: Use 3-wire cable for

devices that source power
from the +15V terminal.

See Guideline A in Table 5.

See Guideline B in Table 5.

See Guideline A in Table 5.

Internal 12 V. 15k ohms pull up

Qualified Sensors: 0–2k ohms
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)

Binary Input - Dry Contact

See Guideline A in Table 5.

Maintained Mode

1 second minimum pulse width

Internal 12 V. 15k ohms pull up

FX-PCG26 General Purpose Programmable Controller Installation Instructions18

Table 4: FX-PCG2511 and FX-PCG26 terminal blocks, functions, ratings, requirements, and
cables

Terminal block
label

BINARY

(Inputs)

Terminal
label

Function, ratings,
requirements

ICOMn Universal Input Common for

all Universal Input terminals

Note: All Universal ICOMn
terminals are isolated
from all other commons.

INn

Binary Input - Dry Contact
Maintained Mode

0.01 second minimum pulse
width

Internal 18 V. 3k ohms pull up

Binary Input - Pulse Counter/
Accumulator Mode

0.01 second minimum pulse
width

(50 Hz at 50% duty cycle)

Internal 18 V. 3k ohms pull up

ICOMn Binary Input Common for all

Binary Input (IN) terminals

Determine wire size and
maximum cable length

Same as (Universal) INn

See Guideline A in Table 5.

Note: All Binary ICOMn
terminals are isolated
from all other commons,
except the Configurable
Output (CO) common
(OCOMn) when the CO
is defined as an Analog
Output.

19FX-PCG26 General Purpose Programmable Controller Installation Instructions

Table 4: FX-PCG2511 and FX-PCG26 terminal blocks, functions, ratings, requirements, and
cables

Terminal block
label

ANALOG

(Outputs)

Terminal
label

OUTn

Function, ratings,
requirements

Analog Output - Voltage
Mode (0–10 VDC)

10 VDC maximum output
voltage

10 mA maximum output
current

Required an external load of
1,000 ohms or more.

Note: The Analog Output
(AO) operates in the
Voltage Mode when
connected to devices
with impedances greater
than 1,000 ohms. Devices
that drop below 1,000
ohms may not operate
as intended for Voltage
Mode applications.

Analog Output - Current
Mode (4–20 mA)

Determine wire size and
maximum cable length

See Guideline C in Table 5.

Requires and external load
between 0–300 ohms.

Note: The AO operates
in Current Mode when
connected to devices
with impedances less
than 300 ohms. Devices
that exceed 300 ohms
may not operate as
intended for Current
Mode applications.

OCOMn Analog Output Signal

Common for all Analog OUT

terminals.

Note: All Analog Output
Common terminals
(OCOMn) are isolated
from all other commons.

FX-PCG26 General Purpose Programmable Controller Installation Instructions20

Table 4: FX-PCG2511 and FX-PCG26 terminal blocks, functions, ratings, requirements, and
cables

Terminal block
label

BINARY

(Output)

BINARY

(Output)

Power Selection
Jumper
positioned to
Internal (INT)
power.

Terminal
label

Function, ratings,
requirements

OUTn Binary Output - 24 VAC Triac

(External Power Source)

Connects OUTn to OCOMn
when activated.

External Power Source
Requirements:

30 VAC maximum output
voltage

0.5 A maximum output current

1.3 A at 25% duty cycle

40 mA minimum load current

OCOMn Binary Output Common (for

OUTn terminal)

Note: Each Binary
Output Common
terminal (OCOMn) is
isolated from all other
commons, including other
Binary Output Common
terminals.

OUTn Binary Output - 24 VAC Triac

(Internal Power Source)

Sources internal 24 VAC power
(24~ HOT).

OCOMn Binary Output - 24 VAC Triac

(Internal Power Source)

Connects OCOMn to 24~ when
activated.

Determine wire size and
maximum cable length

See Guideline C in Table 5.

See Guideline C in Table 5.

Internal Power Source:

30 VAC maximum output
voltage

0.5 A maximum output current

1.3 A at 25% duty cycle

40 mA minimum load current

21FX-PCG26 General Purpose Programmable Controller Installation Instructions

Table 4: FX-PCG2511 and FX-PCG26 terminal blocks, functions, ratings, requirements, and
cables

Terminal block
label

CONFIGURABLE

(Outputs)

Terminal
label

Function, ratings,
requirements

Analog Output - Voltage
Mode (0–10 VDC)

10 VDC maximum output
voltage

10 mA maximum output
current

Required an external load of
1,000 ohms or more.

Binary Output - 24 VAC Triac

(External Power Source only)

Connects OUTn to OCOMn
when activated.

External Power Source
Requirements:

30 VAC maximum output
voltage

0.5 A maximum output current

Determine wire size and
maximum cable length

See Guideline A in Table 5.OUTn

See Guideline C in Table 5.

OCOMn

1.3 A at 25% duty cycle

40 mA minimum load current

Analog Output Signal
Common All Configurable

Outputs (COs) defined as
Analog Outputs (AOs) are
isolated from all other
commons except the Binary
Input common.

Binary Output Signal
Common All Configurable

Outputs (COs) defined as
Binary Outputs are isolated
from all other commons,
including other CO commons.

Same as (Configurable) OUTn.

FX-PCG26 General Purpose Programmable Controller Installation Instructions22

Cable length guidelines for recommended wire
sizes table

Table 5: Cable length guidelines for recommended wire sizes for low-voltage (<30 V) Inputs
and Outputs

Guideline Wire size/Gauge and type Maximum cable

length and type

A

B

C See Figure 8 to select wire

1.0 mm (18 AWG) stranded
copper

0.8 mm (20 AWG) stranded
copper

0.6 mm (22 AWG) stranded
copper

0.5 mm (24 AWG) stranded
copper

1.0 mm (18 AWG) stranded
copper

0.8 mm (20 AWG) stranded
copper

0.6 mm (22 AWG) stranded
copper

0.5 mm (24 AWG) stranded
copper

size/gauge. Use stranded
copper wire

457 m (1,500 ft)
twisted wire

297 m (975 ft)
twisted wire

183 m (600 ft)
twisted wire

107 m (350 ft)
twisted wire

229 m (750 ft)
twisted wire

137 m (450 ft)
twisted wire

91 m (300 ft)
twisted wire

61 m (200 ft)
twisted wire

See Figure 8 to
determine cable
length. Use twisted
wire cable.

Assumptions

100 mV maximum voltage drop

Depending on cable and the
connected input or output device,
you may have to define an offset
in the setup software for the input
or output point.

100 mV maximum voltage drop

Depending on cable and the
connected input or output device,
you may have to define an offset
in the setup software for the input
or output point.

N/A

Maximum cable length versus load current

Use Figure 8 to estimate the maximum cable length relative to the wire size and the load current (in
mA) when wiring inputs and outputs.

Note: Figure 8 applies to low-voltage (<30 V) inputs and outputs only.

23FX-PCG26 General Purpose Programmable Controller Installation Instructions

Max wire length by current and wire size graphic

Figure 8: Maximum wire length for low-voltage

(<30 V) Inputs and Outputs by current and wire size

SA/FC bus and supply power wiring guidelines

Table 6 provides information about the functions, ratings, and requirements for the communication
bus and supply power terminals; and guidelines for wire sizes, cable types, and cable lengths when
wiring the controller's communication buses and supply power.

In addition to the guidelines in Table 6, observe these guidelines when wiring an SA or FC bus and
the 24 VAC supply power:

• Run all low-voltage wiring and cables separate from high-voltage wiring.

• All SA and FC bus cables, regardless of wire size, should be twisted, insulated, stranded copper
wire.

• Shielded cable is strongly recommended for all SA and FC bus cables.

• 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) for detailed
information regarding wire size and cable length requirements for the SA and FC buses.

Comm bus and power supply terminal block rating
and requirements table

Note: The SA Bus and FC Bus wiring recommendations in this table are for MS/TP bus
communications at 38.4k baud. For more information, 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-PCG26 General Purpose Programmable Controller Installation Instructions24

Table 6: Communications bus and supply power terminal blocks, functions, ratings,
requirements, and cables

Terminal
block/Port

Terminal
labels

Function, electrical ratings/Requirements Recommended cable

label

FC BUS

+

FC Bus Communications

-

COM Signal Reference (Common) for Bus

communications

SHLD Isolated terminal (optional shield drain

connection)

FC BUS

(Port)

FC Bus RJ-12 6-Position Modular Connector

provides:

FC Bus Communications

FC Bus Signal Reference and 15 VDC
Common

15 VDC, 180 mA, Power for Bluetooth
Commissioning Converter or FX-ZFR181x/FX­ZFR182x Wireless Router

SA BUS

+

SA Bus Communications

-

COM SA Bus Signal Reference and 15 VDC

Common

SA PWR 15 VDC Supply Power for Devices on the SA

Bus

(Maximum total current draw for SA Bus is
240 mA.)

Sensor Sensor RJ-12 6-Position Modular Connector

provides:

type

0.6 mm (22 AWG)
stranded, 3-wire
twisted, shielded cable
recommended

Bluetooth Commissioning
Converter retractable
cable or 24 AWG 3-pair CAT
3 Cable <30.5 m (100 ft)

0.6 mm (22 AWG)
stranded, 4-wire (2
twisted-pairs), shielded
cable recommended.

Note: The + and - wire
are one twisted pair,
and the COM and SA
PWR are the second
twisted pair of wires.

24 AWG 3-pair CAT3 cable
<30.5 m (100 ft)

SA Bus Communications

SA Bus Signal Reference and 15 VDC
Common

15 VDC Power for devices on the SA bus and
Wireless Commissioning Converter

24~

HOT 24 VAC Power Supply - Hot

Supplies 20–30 VAC (Nominal 24 VAC)

COM 24 VAC Power Supply Common (Isolated

from all other Common terminals on
controller)

35 VA

0.8 mm to 1.0 mm

(18 AWG) 2-wire

25FX-PCG26 General Purpose Programmable Controller Installation Instructions

Setup and adjustments

Setting the device addresses

FX-PC Series controllers are master devices on MS/TP (SA or FC) buses. Before operating FX-PCG
controllers on a bus, you must set a valid and unique device address for each controller on the bus.
You set a controller's device address by setting the positions of the switches on the DIP switch block
at the top of the controller (Figure 3) . Device addresses 4 through 127 are the valid addresses for
these controllers.

The DIP switch block has eight switches numbered 128, 64, 32, 16, 8, 4, 2, and 1. Switches 64
through 1 are device address switches. Switch 128 is a mode switch that enables a controller to
operate on a ZFR/ZFR Pro Series Wireless Field Bus. Switch 128 must be set to off for all hard-wired
SA and FC bus applications. Set switch 128 to ON for wireless FC bus applications only.

Figure 9: Device address DIP switch block set to address 21

Note: FX-PCGs ship with switch 128 ON and the remaining address switches off rendering the

controllers wired slave devices, which do not operate on MS/TP buses, but will not interfere
with bus operation. Set a valid and unique device address on the controller before applying
power to the controller on the bus.

To set the device addresses on FX-PCG:

1. Set all of the switches on the address DIP switch block (128 through 1) to OFF.

2. Set one or more of the seven address switches (64 through 1) to ON, so that the sum of the

switch numbers set to ON equals the intended device address. See Table 7.
Set the highest number switch that is less than or equal to the intended device address to ON.
Then continue setting lower-numbered switches until the total equals the intended address.
For example, if the intended device address is 21, set switch 16 to ON first, then set switch 4
ON, followed by switch 1 (16+4+1= 21).

3. Set switch 128 to ON only for controllers on a ZFR/ZFR Pro Series Wireless Field Bus

application. For all hard-wired SA and FC bus applications, ensure that switch 128 is set to OFF.

Note: Do not connect a controller with switch 128 set to ON to an active (hard-wired) SA
or FC bus. When a controller with switch 128 set to ON and a device address from 4 to
127 is connected to a wired field bus, the entire field bus is rendered inoperable until the
controller is disconnected or switch 128 is set to OFF.

Note: Refer to the FX-ZFR Series Wireless Field Bus System Technical Bulletin (LIT-12011660) for
more information on device addresses in wireless applications.

4. Set a unique and sequential device address for each of the controllers connected on the SA or

FC bus starting with device address 4.

FX-PCG26 General Purpose Programmable Controller Installation Instructions26

To ensure the best bus performance, set sequential device addresses with no gaps in the
device address range (4, 5, 6, 7, 8, 9, and so on). The controllers do not need to be physically
connected on the bus in their numerical device address order.

5. Write each FX-PCG's device address on the white label below the DIP switch block on the
controller's cover.

Table 7 describes the FC bus and SA bus devices addresses for Johnson Controls MS/TP com­munications bus applications.

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)
for more information on controller device addresses and how to set them on MS/TP buses.

Table 7: SA/FC bus device address descriptions

Device address Use on description

0

(Switch 128 Off)

1 to 3

(Switch 128 Off)

4 to 127

(Switch 128 Off)

0 to 3

(Switch 128 ON)

4 to 127

Reserved for FC Bus Supervisory Controller (not for use on FX-PC controllers).

Reserved for peripheral devices (not for use on FX-PC controllers).

Used for MS/TP master devices (FX-PC) that are hardwired to an SA Bus or FC
Bus.

Reserved addresses for wired subordinate devices (not for use on FX-PC
controllers).

Note: FX-PCGs ship with switch 128 ON and the remaining address
switches off rendering the controllers wired subordinate devices, which
do not operate on MS/TP buses.

Valid for MS/TP Master controllers on wireless FC Buses only.

(Switch 128 ON)

Note: Do not connect the FX-PC controller with switch 128 ON to an
active (hard-wired) SA or FC Bus. When a controller with switch 128 ON
and a device address from 4 to 127 is connected to a wired field bus, the
entire field bus is rendered inoperable until the controller is disconnected
or switch 128 is set to off.

Removing the controller cover

Important: Electrostatic discharge can damage controller components. Use proper
electrostatic discharge precautions during installation, setup, and servicing to avoid damaging
the controller.

Important: Disconnect all power sources to the controller before removing cover and
changing the position of any jumper or the EOL switch on the controller. Failure to disconnect
power before changing a jumper or EOL switch position can result in damage to the controller
and void any warranties.

The controller cover is held in place by four plastic latches that extend from the base and snap into
slots on the inside of the housing cover.

To remove the controller cover:

1. Place your fingernails under the two cover lift tabs on the sides of the housing cover and
gently pry the top of the cover away from the base to release the cover from the two upper
latches.

27FX-PCG26 General Purpose Programmable Controller Installation Instructions

2. Pivot the top of the cover further to release it from the lower two latches.

3. Replace the cover by placing it squarely over the base, and then gently and evenly push the
cover on to the latches until they snap into the latched position.

FX-PCG26 cover removed EOL switch & current jumpers

Figure 10: FX-PCG26 with cover removed showing EOL switch and jumper positions

Setting the End-of-Line (EOL) switch

Each controller has an EOL switch, which, when set to ON, sets the controller as a terminating
device on the bus. See Figure 11 for the EOL switch location. The default EOL switch position is OFF.

Figure 11: End-of-Line switch positions

To set the EOL switch on an FX-PCG:

1. Determine the physical location of the controller on the FC bus.

2. Determine if the controller must be set as a terminating device on the bus.

FX-PCG26 General Purpose Programmable Controller Installation Instructions28

Note: 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) for detailed information regarding EOL termination rules and EOL switch

settings on FC buses.

3. If the controller is a terminating device on the FC bus, set the EOL switch to ON. If the
controller is not a terminating device on the bus, set the EOL switch to OFF.

When a controller is connected to power with its EOL switch set to ON, the amber EOL LED on
the controller cover is lit.

When an FX-PCG is connected to power withits EOL switch set to ON, the amber EOL LED on
the controller cover is lit.

Setting the Input and Output jumpers

Binary Output (BO) source power selection jumpers

CAUTION

Risk of Electric Shock.

Disconnect supply power to the FX-PCG before attempting to adjust the Binary Output Source Power
Selection Jumpers. Failure to disconnect the supply power may result in electric shock.

Risque de décharge électrique.

Débrancher l'alimentation de l'controller avant tout réglage du Binary Output Source Power Selection
Jumpers. Le non-respect de cette précaution risque de provoquer une décharge électrique

Important: Do not connect an external power source to a BO when the BO power source
jumper is in the internal power (INT) position. Connecting external power to a BO that sources
internal power can damage the controller and void any warranties.

The BO source power selection jumpers determine whether a BO provides internal power (sourced
from the controller) to the output load (INT position) or requires an external power source (EXT
position) for the output load. Figure 12 shows an example of a controller BOs and the associated
power selection jumpers to the right of the BOs terminal block.

Figure 12: Example binary outputs and the associated source power jumper positions

29FX-PCG26 General Purpose Programmable Controller Installation Instructions

Universal Input current loop jumpers

The Universal Input (UI) current loop fail-safe jumpers are on the circuit board under the controller
cover near the UI terminals (Figure 10). When a UI is defined (in the system software) as a 4-20 mA
Analog Input and the UI’s current loop jumper is in the Disabled (default) position (Figure 13), the
4-20 mA current loop circuit opens whenever power to the controller is interrupted or off.

Figure 13: Current loop jumper positions

Setting the current loop jumper to the Enabled position (Figure 13) connects an internal 100 ohm
resistor across the UI terminals, which maintains the 4-20 mA current loop circuit even when power
to the controller is interrupted or off.

Important: Current Loop jumpers must be in the Disabled (default) position for all UIs that are
not set up to operate as 4-20 mA analog inputs.

FX-PCG26 current loop jumper ID table

Table 8 identifies the current loop jumpers associated with each UI on the FX-PCG26.

Table 8: FX-PCG26 UI Inputs and jumper labels

Universal Input label Jumper label on circuit board

IN1 J20

IN2 J21

IN3 J22

IN4 J23

IN5 J24

IN6 J25

Setting up an integral or local display

FX-PCG262x models have an integral LCD and push button user interface that allows you to set up
and monitor the FX-PCG, the FX-PCG I/O points, and the modules and I/O points connected on the
SA bus. FX-PCG261x models do not have an integral display, but can be connected to an FX-DIS1710
Local Controller Display. For detailed information on setting up and operating either an integral
user interface or a remotely connected FX-DIS1710 display, refer to the FX-DIS1710 Local Controller
Display Technical Bulletin (LIT-12011666).

Commissioning FX-PCG Controllers

You commission FX-PCG controllers with CCT software, via a Bluetooth® Wireless Commissioning
Converter, a USB dongle with ZigBee®, Ethernet connection, or in BACnet router mode when
connected to a FX Supervisory Controller . Refer to the Controller Tool Help (LIT-12011147) for
detailed information on commissioning controllers.

FX-PCG26 General Purpose Programmable Controller Installation Instructions30

Note: The MAP Gateway serves as a replacement for the BTCVT, which is no longer available
for purchase, but continues to be supported.

Troubleshooting FX-PCG Controllers

Observe the Status LEDs on the front of the FX-PCG and see Table 9 to troubleshoot the controller.

Note: To troubleshoot an integral or local controller display, refer to the FX-DIS1710 Local
Controller Display Technical Bulletin (LIT-12011666).

LED status and description table

Table 9: Status LEDs and descriptions of LED states

LED label LED

color

POWER Green On Steady Off Steady = No Supply Power or the controller’s

FAULT Red Off Steady Off Steady = No Faults

SA BUS Green Blink - 2 Hz Blink - 2 Hz = Data Transmission (normal communication)

FC BUS Green Blink - 2 Hz Blink - 2 Hz = Data Transmission (normal communication)

Normal LED
state

Description of LED states

polyswitch/resettable fuse is open. Check Output wiring for
short circuits and cycle power to controller.

On Steady = Power Connected

On Steady = Device Fault; no application loaded; Main
Code download required, if controller is in Boot mode, or a
firmware mismatch exists between the FX-PCG and the FX­ZFR1811 Wireless Field Bus Router.

Blink - 2 Hz = Download or Startup in progress, not ready
for normal operation

Off Steady = No Data Transmission (N/A - auto baud not
supported)

On Steady = Communication lost, waiting to join
communication ring

EOL Amber Off

(Except on
terminating
devices)

Repair information

If a controller fails to operate within its specifications, replace the controller. For a replacement
controller, contact your Johnson Controls representative.

Off Steady = No Data Transmission (auto baud in progress)

On Steady = Communication lost, waiting to join
communication ring

On Steady = EOL switch in ON position

Off Steady = EOL switch in Off position

31FX-PCG26 General Purpose Programmable Controller Installation Instructions

Accessories

Table 10: Accessories ordering information

Product Code Number Description

FX-BTCVT-1 Bluetooth Commissioning Converter, with Bluetooth® Technology

FX-DIS1710-0 Local Controller Display (for use with FX-PCG1611 model only)

FX-ZFR1811-0 Wireless Field Bus Router

TP-2420 Transformer, 120 VAC Primary to 24 VAC secondary, 20 VA, Wall

Plug

Y65T31-0 Transformer, 120/208/240 VAC Primary to 24 VAC Secondary, 40 VA,

Foot Mount, 8 in. Primary Leads and Secondary Screw Terminals,
Class 2

Note: Additional Y6x-x Series transformers are also available.
Refer to the Series Y63, Y64, Y65, Y66, and Y69 Transformers
Product Bulletin (LIT-125755) for more information.

AS-XFR050-0 Power transformer (Class 2, 24 VAC, 50 VA maximum output), no

enclosure

AP-TBK4SA-0 Replacement SA Bus Terminal Blocks, 4-Position, Brown, Bulk Pack

of 10

AP-TBK4FC-0 Replacement FC Bus Terminal Blocks, 4-Position, Blue, Bulk Pack of

10

AP-TBK3PW-0 Replacement Power Terminal Blocks, 3-Position, Gray, Bulk Pack of

10

ZFR-USBHA-0 USB Dongle with ZigBee® Driver provides a wireless connection

through CCT to allow wireless commissioning of the wirelessly
enabled FX-PCG, FX-PCA, FX-PCX, and FX-PCV field controllers. Also
allows use of the FX-ZFR Checkout Tool (FX-ZCT) in CCT.

Note: The ZFR-USBHA-0 replaces the IA OEM DAUBI_2400
ZigBee USB dongle. For additional information on the ZFR­USBHA-0 ZigBee dongle, refer to the FX-ZFR Series Wireless Field

Bus System Technical Bulletin (LIT-12011660) or FX-ZFR Series
Wireless Field Bus System Quick Reference Guide (LIT-12011696).

Technical specifications

Table 11: FX-PCG26 technical specifications

Product Code Numbers FX-PCG2611-0: General Purpose Programmable Controller

FX-PCG2621-0: General Purpose Programmable Controller with
Display and Push Button User Interface

Supply Voltage 24 VAC (nominal, 20 VAC minimum/30 VAC maximum), 50/60 Hz,

power supply Class 2 (North America), Safety Extra-Low Voltage
(SELV) (Europe)

FX-PCG26 General Purpose Programmable Controller Installation Instructions32

Table 11: FX-PCG26 technical specifications

Power Consumption 20 VA maximum for FX-PCG2621 (with integral display) only

Note: VA rating does not include any power supplied to the

peripheral devices connected to Binary Outputs (BOs) or
Configurable Outputs (COs), which can consume up to 12 VA
for each BO or CO; for a possible total consumption of an
additional 84 VA (maximum).

Ambient Conditions Operating: 0°C to 50°C (32°F to 122°F); 10% to 90% RH

noncondensing

Storage: -40°C to 80°C (-40°F to 176°F); 5% to 95% RH
noncondensing

Addressing BACnet® MS/TP: DIP switch set; valid field controller device

addresses 4–127 (Device addresses 0–3 and 128–255 are
reserved and not valid controller addresses.)

N2: DIP switch set; valid controller device addresses 1–255

Communications Bus RS-485, field selectable between BACnet MS/TP and N2

communications:

3-wire FC Bus between supervisory controller and field
controllers.

4-wire SA Bus between field controller, network sensors, and
other sensor/actuator devices, includes a lead to source 15 VDC
supply power (from field controller) to bus devices.

Processor H8SX/166xR Renesas® 32-bit microcontroller

Memory 640 KB flash memory and 128 KB RAM

Input and Output Capabilities FX-PCG26 Series:

6 - Universal Inputs: Defined as 0–10 VDC, 4-20 mA, 0–600k

ohm, or Binary Dry Contact

2 - Binary Inputs: Defined as Dry Contact Maintained or Pulse
Counter/Accumulator Mode

3 - Binary Outputs: Defined as 24 VAC Triac (selectable internal
or external source power)

4 - Configurable Outputs: Defined as 0–10 VDC

2 - Analog Outputs: Defined as 0–10 VDC or 4–20 mA

Analog Input/Analog Output
Resolution and Accuracy

Input: 16-bit resolution

Output: 16-bit resolution, +/- 200 mV accuracy in 0-10 VDC

applications

Terminations Input/Output: Fixed Screw Terminal Blocks

SA/FC Bus and Supply Power: 4-Wire and 3-Wire Pluggable
Screw Terminal Blocks

SA Bus Port: RJ-12 6-Pin Modular Jacks

33FX-PCG26 General Purpose Programmable Controller Installation Instructions

Table 11: FX-PCG26 technical specifications

Mounting Horizontal on single 35 mm DIN rail mount (preferred), or screw

mount on flat surface with three integral mounting clips on
controller

Housing Enclosure material: ABS and polycarbonate, Rating V0

minimum

Protection Class: IP20 (IEC529)

Dimensions(Height x Width x
Depth)

Weight 0.5 kg (1.1 lb)

Compliance

FX-PCG26 Series: 150 mm x 190 mm x 53 mm (5-7/8 in. x 7-1/2

in. x 2-1/8 in.) including terminals and mounting clips

United States: UL Listed, File E107041, CCN PAZX, UL 916,
Energy Management Equipment; UL Listed, File S4977, UUKL 864

- 10th Edition, Smoke Control Equipment (MS-FEC2611-0U and
MS-FEC2621-0U models only)

FCC Compliant to CFR47, Part 15, Subpart B, Class A

Canada: UL Listed, File E107041, CCN PAZX7 CAN/CSA C22.2
No.205, Signal Equipment

Industry Canada Compliant, ICES-003

Europe: Johnson Controls declares that this product is in
compliance with the essential requirements and other relevant
provisions of the EMC Directive.

Australia and New Zealand: RCM Mark, Australia/NZ Emissions
Compliant

BACnet International: BACnet Testing Laboratories (BTL)
Protocol Revision 9 Listed BACnet Application Specific Controller
(B-ASC)

The performance specifications are nominal and conform to acceptable industry standard. For
application at conditions beyond these specifications, consult the local Johnson Controls® office. Johnson
Controls shall not be liable for damages resulting from misapplication or misuse of its products.

Points of single contact

APAC Europe NA/SA

JOHNSON CONTROLS

C/O CONTROLS PRODUCT MANAGEMENT

NO. 32 CHANGJIJANG RD NEW DISTRICT

WUXI JIANGSU PROVINCE 214028

CHINA

© 2019 Johnson Controls. All rights reserved. All specifications and other information shown were current as of document
revision and are subject to change without notice.

www.johnsoncontrols.com

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