Johnson Controls FEC25 User manual

FEC25 Field Equipment Controller Installation Instructions
Part No. 24-10143-802, Rev. —MS-FEC2511-0
Issued April 2016
Refer to the QuickLIT website for the most up-to-date version of this document.
Application
The FEC25 controllers are part of the Metasys®system
Field Equipment Controller (FEC) family. The FEC2511
is a modification of the FEC26 controllers. 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 equipment.
Note: The FEC2511 models are not available in all
regions. At this time it is available in Asia and
Europe.
The FEC controllers 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.
The FEC2511 is not available with an integrated LCD
and push button user interface. It is slightly smaller than
the FEC26 series, and has fewer input and output options.
The FEC2511 does not support wireless applications.
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
135-2004.
The BACnet protocol is a standard for ANSI, ASHRAE,
and the International Standards Organization (ISO) for
building controls.
FEC, IOM, and VMA16 controllers are BTL- tested and
listed as BACnet Application Specific Controllers
(B-ASCs). FAC field controllers 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 CCT and later can be used to switch the
Field Bus communications protocol in FEC Family Field
Controllers to be either the standard BACnet
Master-Slave/Token-Passing (MS/TP) or the N2 protocol.
BACnet MS/TP is the default communications protocol
for all new controllers. Switchable communications
protocols provide a cost-effective upgrade and
modernization path for customers with existing N2
controllers. The Modernization Guide for Legacy N2
Controllers (LIT-12012005) 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 FEC family controllers can be used as
functional replacements for legacy N2 controllers. The
N2-capable FEC family controllers:
•have the I/O quantities and characteristics of the FEC
family controllers
• must be programmed with CCT, which has similar,
but not identical programming capabilities as
HVACPro, GX9100, GPL, and other legacy tools
• support SA Bus devices
• support WRZ wireless sensors from the controller
using the WRZ-7860 receiver
•are available in Buy American versions (most models)
The N2-capable FEC family 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 pass through
• are not listed for UL864 UUKL. N2 is not supported
as part of the Metasys®9th Edition listing for Smoke
Control System Equipment
1FEC25 Field Equipment Controller Installation Instructions

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 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
(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 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.
• Mount the controller on a hard, even surface
whenever possible in wall-mount applications.
•Use shims or washers to mount the controller securely
and evenly on the mounting surface.
• Mount the controller in an area free of corrosive
vapors and observe the Ambient Conditions
requirements in Table 10.
• Provide for sufficient space around the controller for
cable and wire connections for easy cover removal
and good ventilation through the controller (50 mm
[2 in.] minimum on the top, bottom, and front of the
controller).
• Do not mount the controller on surfaces prone to
vibration, such as duct work.
• Do not mount the controller in areas where
electromagnetic emissions from other devices or
wiring can interfere with controller communication.
Observe these additional guidelines when mounting 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.
Figure 1: FEC25 Mounting Positions
2FEC25 Field Equipment Controller Installation Instructions

DIN Rail Mount Applications
Mounting the field 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.
Figure 2: Back of FEC25 Controller Showing Extended
Mounting Clips, DIN Rail Channel, and Mounting
Dimensions, mm (in.)
3FEC25 Field Equipment Controller Installation Instructions

FEC2511 Physical Features
Figure 3: FEC2511 Physical Features
Table 1: FEC2511 Physical Features
Physical Feature: Description and ReferencesCallout
Device Address Dip Switch Block1
Configurable Output (CO) Terminal Block2
24 VAC, Class 2 Supply Power Terminal Block3
Field Controller (FC) Bus Terminal Block4
Sensor Actuator (SA) Bus Terminal Block5
Sensor Actuator (SA) Bus (RJ-12 6-pin Modular Jack)6
Binary Input (BI) Terminal Block7
Universal Inputs (UI) Terminal Block8
LED Status Indicators9
Binary Output (BO) Terminal Block10
Analog Outputs (AO) Terminal Block11
Cover lift tabs12
4FEC25 Field Equipment Controller Installation Instructions

Wiring
Observe the following guidelines when wiring a controller:
Risk of Electric Shock: Disconnect the power supply
before making electrical connections to avoid electric
shock.
Mise En Garde: Risque de décharge électrique:
Débrancher l'alimentation avant de réaliser tout
raccordement électrique afin d'éviter tout risque de
décharge électrique.
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 MS/TP
Communications Bus Technical Bulletin (LIT-12011034).
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 3 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 daisy-chain
configuration using 3-wire twisted, shielded cable as
shown below. See Table 6 for more information.
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
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.
5FEC25 Field Equipment Controller Installation Instructions

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.
Bus Port Pin Assignments
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
(Figure 3) is an RJ-12, 6-position modular jack that
provides a connection for the Wireless Commissioning
Converter, 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 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 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 below. The middle terminal on the supply power
terminal block is not used. See Table 6 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 field controller
does not require an earth ground
connection.
6FEC25 Field Equipment Controller Installation Instructions

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.
The following table contains termination diagrams for the FEC2511.
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)
UIFeedback from
EPP-1000
7FEC25 Field Equipment Controller Installation Instructions

Table 2: Termination Details
Termination DiagramsType of
Input/Output
Type of Field
Device
UI or BIDry Contact
(Binary Input)
CO or AO
Note that
FAC3611 does
not have CO.
0–10 VDC
Output to
Actuator
(External
Source)
CO or AO
Note that
FAC3611 does
not have CO.
0–10 VDC
Output to
Actuator
(Internal Source)
AOVoltage (Analog
Output)
CO24 VAC Triac
Output (Switch
Low, External
Source)
8FEC25 Field Equipment Controller Installation Instructions

Table 2: Termination Details
Termination DiagramsType of
Input/Output
Type of Field
Device
BOIncremental
Control to
Actuator (Switch
Low, Externally
Sourced)
(Triac Jumpers
Where
Applicable)
BO24 VAC Binary
Output (Switch
Low, Externally
Sourced)
(Triac Jumpers
Where
Applicable)
BO24 VAC Binary
Output (Switch
High, Externally
Sourced)
(Triac Jumpers
Where
Applicable)
BOIncremental
Control to
Actuator (Switch
High, Externally
Sourced)
(Triac Jumpers
Where
Applicable)
9FEC25 Field Equipment Controller Installation Instructions

Table 2: Termination Details
Termination DiagramsType of
Input/Output
Type of Field
Device
Note: The bottom jack (J2) on the TE-700 and TE-6x00 Series Sensors is not usable as a
zone bus or a Sensor/Actuator bus (SAB) connection.
SA BusNetwork Stat
with Phone Jack
(Fixed Address
= 199)
SA BusNetwork Stat
with Terminals
Addressable
SA BusNetwork Stat
with Terminals
(Fixed Address
= 199)
10FEC25 Field Equipment Controller 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.
11FEC25 Field Equipment Controller Installation Instructions

Table 3: FEC2511 Terminal Blocks, Functions, Ratings, Requirements, and Cables
Determine Wire Size and
Maximum Cable Length
Function, Ratings,
Requirements
Terminal LabelTerminal 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 INn
terminals.
Provides 100 mA total current
+15 VUNIVERSAL
(Inputs)
See Guideline Ain Table 5.
Analog Input - Voltage Mode
(0–10 VDC)
10 VDC maximum input voltage
Internal 75k ohms Pull-down
INn
See Guideline Bin Table 5.
See Guideline Ain Table 5.
Analog Input - Resistive
Mode (0–600k ohms)
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)
See Guideline Ain Table 5.
Binary Input - Dry Contact
Maintained Mode
1 second minimum pulse width
Internal 12 V. 15k ohms pull up
Same as (Universal) INn
Universal Input Common for
all Universal Input terminals
Note: All Universal ICOMn
terminals share a
common, which is
isolated from all other
commons.
ICOMn
12FEC25 Field Equipment Controller Installation Instructions

Table 3: FEC2511 Terminal Blocks, Functions, Ratings, Requirements, and Cables
Determine Wire Size and
Maximum Cable Length
Function, Ratings,
Requirements
Terminal LabelTerminal Block Label
See Guideline Ain Table 5.
Binary Input - Dry Contact
Maintained Mode
0.01 second minimum pulse
width
Internal 18 V. 3k ohms pull up
INn
BINARY
(Inputs)
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
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.
ICOMn
See Guideline Cin Table 5.
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.
OUTn
ANALOG
(Outputs)
Analog Output Signal
Common for all Analog OUT
terminals.
Note: All Analog Output
Common terminals
(OCOMn) share a
common, which is
isolated from all other
commons.
OCOMn
13FEC25 Field Equipment Controller Installation Instructions

Table 3: FEC2511 Terminal Blocks, Functions, Ratings, Requirements, and Cables
Determine Wire Size and
Maximum Cable Length
Function, Ratings,
Requirements
Terminal LabelTerminal Block Label
See Guideline Cin Table 5.
Binary Output - 24 VAC Triac
(Internal Power Source)
Sources internal 24 VAC power
(24~ HOT).
OUTn
BINARY
(Output)
Binary Output - 24 VAC Triac
(Internal Power Source)
Connects OCOMnto 24~ when
activated.
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
OCOMn
See Guideline Ain Table 5.
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.
OUTn
CONFIGURABLE
(Outputs)
See Guideline Cin Table 5.
Binary Output - 24 VAC Triac
(External Power Source only)
Connects OUTnto 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
Same as (Configurable) OUTn.
Analog Output Signal
Common All Configurable
Outputs (COs) defined as
Analog Outputs (AOs) share a
common, which is isolated from
all other commons except the
Binary Input common.
OCOMn
Binary Output Signal
Common All Configurable
Outputs (COs) defined as
Binary Outputs are isolated
from all other commons,
including other CO commons.
14FEC25 Field Equipment Controller Installation Instructions

FEC2511 and FEC26 Series Point Type Counts per Model
Table 4 shows the different point types and counts available in the FEC2511 and FEC26 Series controllers.
Table 4: and Series Point Type Counts per Model
FEC26FEC2511 (Asia Only
model)
Signals AcceptedPoint Types
64 (Does not support Current
Mode)
Analog Input, Voltage Mode,
0–10 VDC
Analog Input, Current Mode,
4–20 mA
Analog Input, Resistive Mode,
0–2k ohm, resistence
temperature detector (RTD) (1k
NI [Johnson Controls], 1k PT,
A99B SI), negative temperature
coefficient (NTC) (10k Type L,
2.252k Type 2)
Binary Input, Dry Contact
Maintained Mode
Universal Input (UI)
26Dry Contact Maintained Mode
Pulse Counter/Accumulator
Mode (High Speed), 100 Hz
Binary Input (BI)
22 (Voltage Only)Analog Output, Voltage Mode,
0–10 VDC
Analog Output, Current Mode,
4–20 mA
Analog Output (AO)
32 (Ext Power only)24 VAC TriacBinary Output (BO)
42Analog Output, Voltage Mode,
0–10 VDC
Binary Output Mode, 24 VAC
Triac
Configurable Output (CO)
1
15FEC25 Field Equipment Controller Installation Instructions

Cable and Wire Length
Guidelines
Table 5 defines cable length guidelines for the various
wire sizes that may be used for wiring low-voltage (<30V)
input and outputs.
Table 5: Cable Length Guidelines for Recommended Wire Sizes for Low-Voltage (<30V) Inputs and Outputs
AssumptionsMaximum Cable
Length and Type
Wire Size/Gauge and TypeGuideline
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.
457 m (1,500 ft) twisted
wire
1.5 mm2(18 AWG) stranded copper
A
297 m (975 ft) twisted wire0.8 mm (20 AWG) stranded copper
183 m (600 ft) twisted wire0.6 mm (22 AWG) stranded copper
107 m (350 ft) twisted wireN/A (24 AWG) stranded copper
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.
229 m (750 ft) twisted wire
1.5 mm2(18 AWG) stranded copper
B
137 m (450 ft) twisted wire0.8 mm (20 AWG) stranded copper
91 m (300 ft) twisted wire0.6 mm (22 AWG) stranded copper
61 m (200 ft) twisted wireN/A (24 AWG) stranded copper
N/A
See Figure 8 to determine
cable length. Use twisted
wire cable.
See Figure 8 to select wire size/gauge.
Use stranded copper wire
C
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 (<30V) inputs and
outputs only.
Figure 8: Maximum Wire Length for Low-Voltage (<30V) Inputs and Outputs by Current and Wire Size
16FEC25 Field Equipment Controller Installation Instructions

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 MS/TP Communications Bus Technical
Bulletin (LIT-12011034) for detailed information
regarding wire size and cable length requirements for
the SA and FC buses.
Table 6: Communications Bus and Supply Power Terminal Blocks, Functions, Ratings, Requirements, and
Cables
Recommended Cable TypeFunction, Electrical Ratings/RequirementsTerminal
Labels
Terminal
Block/Port
Label
0.6 mm (22 AWG) stranded, 3-wire
twisted, shielded cable
recommended
FC Bus Communications+
-
FC BUS1
Signal Reference (Common) for Bus communicationsCOM
Isolated terminal (optional shield drain connection)SHLD
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.
SA Bus Communications+
-
SA BUS1
SA Bus Signal Reference and 15 VDC CommonCOM
15 VDC Supply Power for Devices on the SA Bus
(Maximum total current draw for SA Bus is 240 mA.)
SA PWR
24 AWG 3-pair CAT3 cable <30.5
m (100 ft)
RJ-12 6-Position Modular Connector provides:
SA Bus Communications
SA Bus Signal Reference and 15 VDC Common
15 VDC Power for devices on the SA bus and Wireless
Commissioning Converter
Sensor
Sensor1
0.8 mm to 1.5 mm2
(18 AWG) 2-wire
24 VAC Power Supply - Hot
Supplies 20–30 VAC (Nominal 24 VAC)
HOT24~
24 VAC Power Supply Common (Isolated from all other
Common terminals on controller)
35 VA
COM
1 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 MS/TP Communications Bus Technical Bulletin (LIT-12011034).
17FEC25 Field Equipment Controller Installation Instructions

Setup and Adjustments
Setting the Device Addresses
Metasys®field controllers are master devices on MS/TP
(SA or FC) buses. Before operating field 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 (Figure 9). Switches 64 through
1 are device address switches. Switch 128 is a mode
switch that enables a controller to operate on a ZFR1800
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: Metasys field controllers 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 Metasys field controllers:
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
though 1) to ON, so that the sum of the switch
numbers set to ON equals the intended device
address. See Table 1.
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). See Figure 1.
3. Set switch 128 to ON only for controllers on a
ZFR1800 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.
Refer to the ZFR1800 Series Wireless Field Bus
System Technical Bulletin (LIT-12011295) 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.
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 field controller's device address on the
white label below the DIP switch block on the
controller's cover.
Table 1 describes the FC bus and SA bus devices
addresses for Johnson Controls®MS/TP
communications bus applications.
Refer to the MS/TP Communications Bus Technical
Bulletin (LIT-12011034) for more information on
controller device addresses and how to set them on
MS/TP buses.
Table 7: SA/FC Bus Device Address Descriptions
Use on DescriptionDevice
Address
Reserved for FC Bus Supervisory Controller
(not for use on field controllers).
0
(Switch
128 Off)
Reserved for peripheral devices (not for use
on field controllers).
1 to 3
(Switch
128 Off)
Used for MS/TP master devices (field) that are
hardwired to an SA Bus or FC Bus.
4 to 127
(Switch
128 Off)
18FEC25 Field Equipment Controller Installation Instructions

Table 7: SA/FC Bus Device Address Descriptions
Use on DescriptionDevice
Address
Reserved addresses for wired slave devices
(not for use on field controllers).
Note: Metasys field controllers 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.
0 to 3
(Switch
128 ON)
Valid for MS/TP Master controllers on wireless
FC Buses only.
Note: Do not connect a field 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.
4 to 127
(Switch
128 ON)
Setting the N2 Controller Address to
be Greater than 127
N2-configured controllers support the full range of
possible N2 device addresses provided by the N2 protocol
standard (1-255). However, these controllers require
special configuration for addresses above 127.
Use the following instructions for controllers greater than
127.
Note: Before you perform this procedure, make sure
that your controller has been converted from
BACnet to N2 protocol first. Refer to the
Modernization Guide for Legacy N2 Controllers
(LIT-12012005) for more information.
Note: This special configuration is required because
controller addresses above 127 were originally
intended for use with the Wireless Field Bus
system.
1. Disconnect the 24 VAC supply from the controller.
2. Remove the FC Bus connector from the controller.
3. Set the address switch set to the desired N2 address.
4. Set the address switch segment labeled 128 to OFF.
5. Reconnect the 24 VAC supply to the controller.
6. Using an SA bus connection, download the firmware
and controller application file. The download process
asks to confirm switching the communication protocol
to N2.
7. Click OK.
8. After the download is finished, disconnect the 24
VAC supply to the controller.
9. Set the address switch segment labeled 128 to ON.
10. Reattach the FC Bus connector to the controller.
11. Reconnect the 24 VAC supply to the controller.
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.
19FEC25 Field Equipment Controller Installation Instructions

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
Figure 3 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.
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.
Figure 10: FEC2511 with Cover Removed EOL Switch
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 10 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 a field controller:
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.
Note: Refer to the MS/TP Communications Bus
Technical Bulletin (LIT-12011034) 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 field controller is connected to power with its
EOL switch set to ON, the amber EOL LED on the
controller cover is lit.
Commissioning Field Controllers
You commission field controllers with the Controller
Configuration Tool (CCT) software, via a Bluetooth®
Wireless Commissioning Converter, a USB dongle with
ZigBee®, Ethernet connection, or in BACnet router mode
when connected to an NAE or NCE. Refer to the
Controller Tool Help (LIT-12011147) for detailed
information on commissioning controllers.
Troubleshooting Field Controllers
Observe the Status LEDs on the front of the field
controller and see Table 8 to troubleshoot the controller.
To troubleshoot a local controller display, refer to the
DIS1710 Local Controller Display Technical Bulletin
(LIT-12011270).
20FEC25 Field Equipment Controller Installation Instructions