Johnson Controls FAC2612-1 Installation Manual

FAC2612-1 Advanced Application Field

Equipment Controller Installation Guide

Application

The FAC2612-1 Advanced Application Field
Equipment Controller (FAC) is part of the Metasys®
system Field Equipment Controller family. The FAC26
Series controllers run pre-engineered and user­programmed applications and provide the inputs
and outputs required to monitor and control a wide
variety of HVAC equipment.

FAC26 field controllers operate on an RS-485
BACnet® MS/TP Bus as BACnet Advanced
Application Controllers (B-AACs) integrate into
Johnson Controls® and third-party BACnet systems.

FAC26 controllers include an integral real-time clock,
which enables the controllers to monitor and control
schedules, calendars, and trends, and operate for
extended periods of time as stand-alone controllers
when offline from the system network.

Switchable communications protocols

By default, the Metasys system FEC 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.

FEC, VMA16, and VMA18 are BTL-listed as BACnet
Application Specific Controllers (B-ASCs). FAC Field
Controllers and the VMA1930 Field Controller
are BTL-listed as BACnet Advanced Application
Controllers (B-AACs). The NS Series Sensors are BTL­listed as BACnet Smart Sensors (B-SSs).

Release 10.1 and later of the Controller
Configuration Tool (CCT) can be used to switch the
Field Bus communications protocol in supported FEC
Family Field Controllers to be either the standard
BACnet MS/TP or the N2 protocol. All new controllers
use BACnet MS/TP as the default communications
protocol. Switchable communications protocols in
the MS/TP models provide a cost-effective upgrade
and modernization path for customers with existing
N2 controllers.

Part No. 24-10143-195 Rev. L

2019-10-18

The N2-capable FEC Family Controllers can be used
as functional replacements for legacy N2 controllers.
The N2-capable FEC Family Controllers:

• have the input and output (I/O) quantities and
characteristics of the FEC Family Controllers

• must be programmed with CCT

• support SA Bus devices

• support WRZ wireless sensors from the controller
using the WRZ-7860 receiver (most models)

• are available in Buy American versions (most
models)

• are listed for UL 864 UUKL/ORD-C100-13 UUKLC
10th Edition Smoke Control (some models). N2 is
now supported as part of the Metasys 10th Edition
listing for Smoke Control System Equipment. For
details, refer to the Metasys System UL 864 10th

Edition UUKL/ORD-C100-13 UUKLC Smoke Control
System Technical Bulletin (LIT-12012487).

The N2-capable controllers:

• do not support Zone Bus (for example, TMZ
sensors and M100 actuators) or XT-Bus (System

91) devices (for example, XT, XTM, and XP
modules)

• do not support a wireless connection to the N2
bus

• do not support NxE passthrough

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

*2410143195L*

(barcode for factory use only)

MS-FAC2612-1

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 a field
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 field controller with removable terminal
blocks

• 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

FAC2612-1 Advanced Application Field Equipment Controller Installation Guide2

FAC2612-1 physical features

Figure 1: FAC2612-1 physical features

Table 1: FAC2612-1 physical features

Physical feature: description and references

1 Configurable Output (COs) Terminal Blocks. See Table 2.
2 SPDT Relay Terminal Blocks. See Table 2.
3 Mounting Clips. See Figure 3.
4 SPST Relay Terminal Blocks. See Table 2.

24 VAC, Class 2 Supply Power Terminal Block. See Supply

5

power terminal block.

6 Cover Lift Tab

Field Controller (FC) Bus Terminal Block. See FC bus

7

terminal block.

Sensor Actuator (SA) Bus Terminal Block. See SA bus

8

terminal block.

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

9

See SA Bus port.
Binary Input (BI) Terminal Blocks. Dry Contact Maintained

10

or Pulse Counter/Accumulator Mode. See Table 2.
Universal Inputs (UI) Terminal Blocks. Can be defined as

Voltage Analog Input (0–10 VDC), Current Analog Input

11

(4–20 mA), Resistive Analog Inputs (0–600k ohm), or Dry
Contact Binary Input. See Table 2.

Current Loop Mode DIP Switch Block for Universal Inputs
that are defined as Current Analog Input (4–20 mA) in

12

the system software. See Setting the UI current loop DIP

switches.

Table 1: FAC2612-1 physical features

Physical feature: description and references

End-of-Line (EOL) Switch. See Setting the End-of-Line

13

(EOL) switch.

14 LED Status Indicators. See Table 8.

Field Controller (FC) Bus Port (RJ-12 6-pin Modular Jack).

15

See FC bus port.
Device Address DIP Switch Block. See Setting the device

16

addresses.

Mounting

Observe these guidelines when mounting a field
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 2).

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

FAC2612-1 Advanced Application Field Equipment Controller Installation Guide 3

• 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
a field 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.

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 2.

2. Pull the two bottom mounting clips outward
from the controller to the extended position
(Figure 3).

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 3), 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 field 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 3.

Figure 2: Field Controller mounting positions

DIN rail mount applications

Mounting the field controller horizontal on 35 mm
DIN rail is the preferred mounting method.
To mount a field controller on 35 mm DIN rail:

2. Mark the mounting hole locations on the wall
using the dimensions in Figure 3 and one of the
mount positions shown in Figure 2. 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.

FAC2612-1 Advanced Application Field Equipment Controller Installation Guide4

Mounting features and dimensions

Figure 3: Back of Controller showing extended
mounting clips, DIN rail channel, and mounting
dimensions, mm (in.)

Wiring

Warning

ATTENTION

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 MS/TP Communications Bus Technical Bulletin

(LIT-12011034).

Risk of Electric Shock

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

Avertissement

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.

FAC terminal blocks and bus ports

See FAC2612-1 physical features for terminal block
and bus port locations on the FAC2612-1 controller.
Observe the following guidelines when wiring a
controller.

Input and Output terminal blocks

On most field controller models, 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 2
for more information about I/O terminal functions,
requirements, and ratings.

FC bus terminal block

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

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

FAC2612-1 Advanced Application Field Equipment Controller Installation Guide 5

Figure 4: FC bus terminal block wiring

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

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 Bluetooth® Commissioning
Converter, or a ZFR/ZFR Pro Wireless Field Bus
Router.

The FC bus port is connected internally to the FC bus
terminal block. See Table 4 for more information.
The FC bus port pin assignment is shown in Figure .

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

The SA Bus terminal block is a brown, removable, 4­terminal 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 daisy­chain configuration using 4-wire twisted, shielded
cable as shown in Figure 5. See Table 4 for more
information.

Figure 5: SA bus terminal block wiring

SA Bus port

The Sensor (SA Bus) port on the bottom of the
controller (Figure 1) 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.

A DIS1710 Local Controller Display also can be
connected to the SA Bus port.

The Sensor port is connected internally to the
SA bus terminal block. See Table 4 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 in Figure . The middle
terminal on the supply power terminal block is not

FAC2612-1 Advanced Application Field Equipment Controller Installation Guide6

used. See Table 4 for more information about the
Supply Terminal Block.

Figure 7: 24 VAC supply power terminal block
wiring

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

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

4. Set DIP switch 128 to ON, which enables
wireless operation on the controller.

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).

Terminal Wiring Guidelines,
Functions, Ratings, and

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 field 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 field controller
does not require an earth ground connection.

Wireless network applications

When configured for BACNet MS/TP
communication, the controller can also be installed
in a wireless application using a ZFR/ZFR Pro
Wireless Field Bus Router.
To configure a controller for use with the ZFR/ZFR
Pro Series Wireless Field Bus system:

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

Requirements

Input and Output wiring guidelines

Table 2 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 2,
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.

Note: In wireless network applications, do not
connect any wires to the FC bus terminal block.
(Connect the SA/FC terminal block on an IOM
to an SA bus only).

FAC2612-1 Advanced Application Field Equipment Controller Installation Guide 7

• 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.

FAC2612-1 I/O wiring ratings and requirements table

Table 2: Field Controller terminal blocks, functions, ratings, requirements, and cables

Terminal block label

UNIVERSAL

(Inputs)

BINARY

(Inputs)

Terminal
label

+15 V

+5 V

INn

ICOMn

INn

ICOMn

Function, ratings, requirements

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

connected to the Universal INn terminals.
Provides 100 mA total current

5 VDC Power Source for active (3-wire) input devices
connected to the Universal INn terminals.

Provides 40 mA total current.

Analog Input - Voltage Mode (0–10 VDC)

10 VDC maximum input voltage
Internal 75k ohm Pull-down

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

Setting the UI current loop DIP switches.

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)

Binary Input - Dry Contact Maintained Mode

1 second minimum pulse width
Internal 12 V. 15k ohm pull up

Universal Input Common for all Universal Input terminals

Note: All Universal ICOMn terminals share a common,

which is isolated from all other commons.

Binary Input - Dry Contact Maintained Mode

0.01 second minimum pulse width
Internal 18 V 3k ohm pull up

Binary Input - Pulse Counter/Accumulator Mode

0.01 second minimum pulse width
(50 Hz at 50% duty cycle)
Internal 18 V 3k ohm pull up

Binary Input Common for all Binary Input (IN) terminals

Note: All Binary ICOMn terminals share a common,

which is isolated from all other commons, except the
Configurable Output (CO) common (OCOMn) when the
CO is defined as an Analog Output.

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.

Same as (Universal) INn.

Note: Use 3-wire cable for
devices that source power
from the +5 V terminal.

See Guideline A in Table 3.

See Guideline B in Table 3.

See Guideline A in Table 3.

See Guideline A in Table 3.

Same as (Universal) INn

See Guideline A in Table 3.

FAC2612-1 Advanced Application Field Equipment Controller Installation Guide8