Johnson Controls IOM1711 Manuale utente
IOM1711 and IOM2711 Input/Output Module
Installation Guide
Application
The IOM1711 and IOM2711 input/output expansion
modules are part of the Metasys® system Field
Equipment Controller family. Input/Output Module
(IOM) expansion modules expand the number of
I/O points connected to a Network Automation
Engine (NAE), Network Control Engine (NCE), Field
Equipment Controller (FEC), VAV Modular Assembly
(VMA), or Advanced Application Field Equipment
Controller (FAC) to monitor and control a wide
variety of HVAC equipment.
IOM field controllers operate on an RS-485 BACnet®
MS/TP Bus and integrate into Johnson Controls®
and third-party BACnet systems.
Important: In Metasys system smoke control
applications, use only the MS-IOM171x-0U and
MS-IOM271x-0U at Metasys Release 8.1 that
are UL 864 UUKL/UUKLC 10th Edition Smoke
Control Listed. For Metasys system smoke
control applications, you must refer to the
Metasys System UL 864 UUKL Tenth Edition Smoke
Control System Technical Bulletin (LIT-12012487)
for detailed requirements and procedures
for installing, commissioning, and operating
UL 864 UUKL/UUKLC Listed Metasys system
devices. The UL 864 UUKL/UUKLC listing for
Smoke Control Equipment is voided if (1) you
do not use the required software tools at the
required versions; or (2) you do not meet the
requirements or do not follow the procedures
as documented in the Metasys System UL
864 UUKL Tenth Edition Smoke Control System
Technical Bulletin (LIT-12012487).
Note: At Controller Configuration Tool (CCT)
Release 10.1 and later, a new capability was
introduced allowing VMAs, FECs, and FACs
to communicate by using either the BACnet
or the N2 field bus networking protocol. The
operation of the IOM Input/Output Module
is not affected by the selection of the BACnet
or the N2 protocol in the host controller when
the IOM is connected to the host controller
using the SA bus. Only the BACnet protocol is
supported when the IOM is connected directly
to the trunk using the FC bus.
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 controller with removable terminal blocks
(Power and SA/FC bus are removable)
*241014476P*
Part No. 24-10144-76 Rev. P
2019-10-18
(barcode for factory use only)
MS-IOM1711-x, MS-IOM2711-x
• 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
IOM1711 and IOM2711 Input/Output Module Installation Guide2
IOM1711 and IOM2711 physical
features
Figure 1: IOM17 and IOM27 physical features
Table 1: IOM17 and IOM27 physical features
Callo
ut Physical feature: description and references
1Device Address DIP Switch Block. See Setting the device
addresses for more information.
2Mounting Clip
324 VAC, Class 2 Supply Power Terminal Block. See Table 4
for more information.
4Cover Lift Tab. See Removing the Controller cover for
more information.
5Sensor Actuator (SA) Bus / Field Controller (FC) Bus
Terminal Block. See Table 4 for more information.
6Binary Inputs (BIs) Terminal Block (Not available on
IOM27). See Table 2 for more information.
7
End-of-Line (EOL) Switch. See Setting the End-of-Line
(EOL) switch for more information.
Note: The EOL Switch is located under the
controller cover. You must remove the cover to
change the EOL switch position.
8
Sensor Actuator (SA) Bus or Field Controller (FC) Bus
Port (RJ-12 6-pin Modular Jack). See Table 4 for more
information.
9Light-Emitting Diode (LED) Status Indicators. See Table
for more information.
10 Universal Outputs (UO) Terminal Blocks (Not available on
IOM17). See Table 2 for more information.
11 Universal Inputs (UI) Terminal Blocks (Not available on
IOM17). See Table 2 for more information.
12 Relay Output Terminal Blocks (Not available on IOM17).
See Table 2 for more information.
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 (see Figure 2).
• 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 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).
IOM1711 and IOM2711 Input/Output Module Installation Guide 3
• 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 2: Controller mounting positions
DIN rail mount applications
Mounting the controller horizontal on 35 mm DIN
rail is the preferred mounting method.
To mount a field 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 2.
2. Pull the bottom mounting clip outward from
the controller to the extended position as
shown in 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 clip inward (up) to
secure the controller on the DIN rail.
To remove the controller from the DIN rail,
pull the bottom mounting clip out to the
extended position and carefully lift the con-
troller off the DIN rail.
Wall mount applications
To mount a field controller directly on a wall or
other flat vertical surface:
1. Pull the bottom mounting clip outward and
ensure it is locked in the extended position as
shown in Figure 3.
2. Position the controller in a proper mounting
position shown in Figure 2 and mark the
mounting hole locations on the wall or surface
using the dimensions shown in Figure 3. Or,
hold the controller up to the wall or surface in
a proper mounting 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 wall anchors). Carefully tighten all of
the screws.
Important: Do not overtighten the
mounting screws. Overtightening the
screws may damage the mounting clips.
IOM1711 and IOM2711 Input/Output Module Installation Guide4
Mounting Features and Dimensions
Figure 3: Back of IOM17 or IOM27 Controller
showing extended mounting Clips, DIN rail
channel and mounting dimensions, mm (in.)
Wiring
WARNING
Risk of Electric Shock:
Disconnect or isolate all power supplies before mak-
ing electrical connections. More than one disconnec-
tion or isolation may be required to completely de-en-
ergize equipment. Contact with components carrying
hazardous voltage can cause electric shock and may
result in severe personal injury or death.
AVERTISSEMENT
Risque de décharge électrique:
Débrancher ou isoler toute alimentation avant de
réaliser un branchement électrique. Plusieurs iso-
lations et débranchements sont peut-être néces-
saires pour -couper entièrement l'alimentation de
l'équipement. Tout contact avec des composants con-
ducteurs de tensions dangereuses risque d'entraîner
une décharge électrique et de provoquer des
blessures graves, voire mortelles.
CAUTION
Risk of Property Damage:
Do not apply power to the system before checking all
wiring connections. Short circuited or improperly con-
nected wires may result in permanent damage to the
equipment.
ATTENTION
Risque de dégâts matériels:
Ne pas mettre le système sous tension avant d'avoir
vérifié tous les raccords de câblage. Des fils for-
mant un court-circuit ou connectés de façon incor-
recte risquent d'endommager irrémédiablement
l'équipement.
Important:
Do not exceed the controller electrical rat-
ings. 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 dis-
charge 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 1 for terminal block and bus port
locations on the controller. Observe the following
guidelines when wiring a controller.
Input and Output terminal blocks
Most 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
IOM1711 and IOM2711 Input/Output Module Installation Guide 5
Table 2 for more information about I/O terminal
functions, requirements, and ratings.
SA/FC bus terminal block
An IOM can be connected to a Sensor/Actuator
(SA) bus or a Field Controller (FC) bus, but not to
both buses simultaneously. The SA/FC bus terminal
block is a removable, 4-terminal plug that fits into a
board-mounted jack.
When connecting the IOM to an FC bus, wire the bus
terminal block plugs on the controller and the other
controllers in a daisy-chain configuration using 3-
wire twisted, shielded cable as shown in the FC Bus
Terminal Block wiring figure below. See Table 4 for
more information.
Figure 4: FC bus terminal block wiring
When connecting the IOM to an SA bus, wire the bus
terminal block plugs on the controller and other SA
bus devices in a daisy-chain configuration using 4-
wire twisted, shielded cable as shown in Figure 5.
See Input and Output wiring guidelines for more
information.
Figure 5: SA bus terminal block wiring
Note: The SA PWR/SHLD terminal does not
supply 15 VDC. The SA PWR/SHLD terminal
is isolated and can be used to connect (daisy
chain) the 15 VDC power leads on the SA bus
(Figure 5) or the cable shields on the FC bus
(Figure 4). The SA bus supervisor (FAC, FEC, or
VMA) supplies 15 VDC to devices on the SA Bus
requiring power.
SA/FC bus port
The SA/FC bus port on the front of the controller
is an RJ-12, 6-position modular jack that provides
a connection for devices on the SA bus, a Wireless
Commissioning Converter, a ZFR/ZFR Pro Wireless
Router (depending on which bus the IOM is
operating on).
The SA/FC bus port is connected internally to the
SA/FC bus terminal block. See Table 4 for more
information. The SA/FC Bus Port pin assignment is
shown in the Pin Number Assignments figure below.
Figure 6: Pin number assignments for sensor, SA
bus and FC bus ports on controllers
Supply power terminal block
The 24 VAC supply power terminal block is a gray,
removable, 3-terminal plug that fits into a board-
mounted jack on the top right of the controller.
Note: If CE compliance is required for the MS-
IOM1711-0 or MS-IOM2711-2 product and
application, the ferrite ring that is included in
the package must be used in the installation.
Use of the ferrite ring ensurescompliance to
the EMC Directive in all possible applications.
The ferrite ring does not affect UL864 Smoke
Control applications. It is not required for
applications in North America.
To install the ferrite ring, pass the two 24 VAC
supply powerwires through the opening of the
ring and then complete five wraps or turns of
IOM1711 and IOM2711 Input/Output Module Installation Guide6
both wires around the outside of the ring and
back through the center opening as shown in
the following figure. Locate the ferrite ring as
near to the supply power terminal plug as pos-
sible while still allowing for a typical connection
to the controller with the terminal plug.
Figure 7: Wrapped ferrite ring
Wire the 24 VAC supply power wires from the
transformer to the HOT and COM terminals on the
terminal plug as shown in the following figure. The
middle terminal on the supply power terminal block
is not used. See Table 4 for more information about
the Supply Terminal Block.
Figure 8: 24 VAC supply power terminal block
wiring
Note: The supply power wire colors may
be different on transformers from other
manufacturers. Refer to the transformer
manufacturer’s instructions and the project
installation drawings for wiring details.
Important: Connect 24 VAC supply power to
the controller and all other network devices so
that transformer phasing is uniform across the
network devices. Powering network devices
with uniform 24 VAC supply power phasing
reduces noise, interference, and ground loop
problems. The controller does not require an
earth ground connection.
Wireless network applications
The controller can also be installed in a wireless
application using a ZFR/ZFR Pro Wireless Field Bus
Router.
Important: Wireless operation is not approved
for smoke control applications. Refer to the
Metasys System UL 864 UUKL Tenth Edition Smoke
Control System Technical Bulletin (LIT-12012487)
for detailed requirements and procedures
for installing, commissioning, and operating
UL 864 UUKL/UUKLC Listed Metasys system
devices.
To configure a controller for use with the ZFR/
ZFR Pro Series Wireless Field Bus system:
Note: IOMs can communicate wirelessly on an
FC bus only.
1. Connect the ZFR/ZFR Pro Wireless Field Bus
Router to the FC bus port (RJ-12 modular jack)
on the front of the controller.
2. Ensure that the controller's device address DIP
switches are set to the correct device address.
See Setting the device addresses.
3. Set DIP switch 128 to ON, which enables
wireless operation on the controller.
For more information on 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).
IOM1711 and IOM2711 Input/Output Module Installation Guide 7
Terminal Wiring Guidelines,
Functions, Ratings, and
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.
• 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.
IOM1711 and IOM2711 Input/Output Module Installation Guide8
Wiring ratings and requirements
table
Table 2: IOM17 and IOM27 terminal blocks, functions, ratings, requirements, and cables
Terminal block label Terminal
label Function, ratings, requirements Determine wire size and
maximum cable length
+15 V
15 VDC Power Source for active (3-wire) input devices
connected to the Universal INn terminals.
Provides 35 mA total current
Same as (Universal) INn
Note: Use 3-wire cable for
devices that source power
from the +15V terminal.
Analog Input - Voltage Mode (0–10 VDC)
10 VDC maximum input voltage
Internal 75k ohm Pull-down
See Guideline A in Table 3.
Analog Input - Current Mode (4–20 mA)
Internal 100 ohm load impedance See Guideline B in Table 3.
Analog Input - Resistive Mode (0–600k ohm)
Internal 12 V, 15k ohm pull up
Qualified Sensors: 0-2k ohm potentiometer, RTD (1k Nickel
[ Johnson Controls sensor], 1k Platinum, and A99B Silicon
Temperature Sensor) Negative Temperature Coefficient (NTC)
Sensor (10k Type L, 10k JCI Type II, 2.252k Type II)
See Guideline A in Table 3.
INn
Binary Input - Dry Contact Maintained Mode
1 second minimum pulse width
Internal 12 V, 15k ohm pull up
See Guideline A in Table 3.
UNIVERSAL
(Inputs)
(IOM27)
ICOMn
Universal Input Common for all Universal Input terminals
Note: All Universal ICOMn terminals share a common,
which is isolated from all other commons.
Same as (Universal) INn
Binary Input - Dry Contact Maintained Mode
0.01 second minimum pulse width
Internal 18 V, 3k ohm pull up
INnBinary 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
(Inputs)
(IOM17)
ICOMn
Binary Input Common for all Binary Input (IN) terminals
Note: All Binary ICOMn terminals share a common,
which is isolated from all other commons.
See Guideline A in Table 3.
IOM1711 and IOM2711 Input/Output Module Installation Guide 9
Table 2: IOM17 and IOM27 terminal blocks, functions, ratings, requirements, and cables
Terminal block label Terminal
label Function, ratings, requirements Determine wire size and
maximum cable length
Analog Output - Voltage Mode (0–10 VDC)
10 VDC maximum output voltage
10 mA maximum output current
Required an external load of 1,000 ohm or more.
Note: The Analog Output (AO) operates in the Voltage
Mode when connected to devices with impedances
greater than 1,000 ohm. Devices that drop below 1,000
ohm may not operate as intended for Voltage Mode
applications.
See Guideline A in Table 3.
Analog Output - Current Mode (4–20 mA)
Requires and external load between 0 and 300 ohm.
Note: The Analog Output (AO) operates in the Current
Mode when connected to devices with impedances less
than 300 ohm. Devices that exceed 300 ohm may not
operate as intended for Current Mode applications.
See Guideline B in Table 3.
OUTn
Binary Output Mode - 24 VAC/DC Field-effect Transistor
(FET)
Connects OUTn to OCOMn when activated.
30 VAC maximum output voltage
0.5 A maximum output current
1.3 A at 25% duty cycle
40 mA minimum load current (hold current)
See Guideline B in Table 3.
Universal
(Outputs)
(IOM27)
OCOMn
Universal Output (UO) Common
Isolated from all other terminal commons, including other UO
Commons.
Same as OUT
OUT NOn
Normal Open Contact
Connects OCOM to OUT NO when activated.
UL Listed (-0 model only)
1/4 hp 120 VAC, 1/2 hp 240 VAC
360 VA Pilot Duty at 120/240 VAC (B300)
3 A Non-inductive 24–240 VAC
CE Marking (-2 model only): 6 (4) A N.O. or N.C. only, 240 VAC
OCOMn
Relay Common
Isolated from all other terminal commons, including other
Relay Commons.
RELAY
n
(Outputs)
(IOM27)
OUT NCn
Normal Closed Contact
Connects OCOM to OUT NC when activated.
UL Listed (-0 model only)
1/4 hp 120 VAC, 1/2 hp 240 VAC
360 VA Pilot Duty at 120/240 VAC (B300)
3 A Non-inductive 24–240 VAC
CE Marking (-2 model only): 6 (4) A N.O. or N.C. only, 240 VAC
The Relay output terminals can
accommodate the following
maximum wire sizes:
Two wires per terminal:
1.3 mm (16 AWG) maximum wire
size
or
One wire per terminal:
2.0 mm (12 AWG) maximum
Note: You must determine
the required wire size
for the high-voltage (>30
V) terminals according
to relay ratings, the
applied load, and the
local, national, or regional
electrical codes.
Cable and wire length guidelines
Table 3 defines cable length guidelines for the
various wire sizes that may be used for wiring low-
voltage (<30 V) input and outputs.
Cable length guidelines for
recommended wire size
IOM1711 and IOM2711 Input/Output Module Installation Guide10
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