Johnson Controls IOM3733 User manual

IOM3733 Input/Output Module Installation Guide
Application
The MS-IOM3733 input/output expansion module
is part of the Metasys system Field Equipment
Controller family. Input/Output expansion modules
(IOMs) expand the number of input/output
points connected to either a General Purpose
Controller(CGM), VAV Box Controllers (CVM), SNC,
SNE, Network Automation Engine (NAE), Network
Control Engine (NCE), Advanced Application Field
Equipment Controller (FAC), Field Equipment
Controller (FEC), or Variable Air Volume Modular
Assembly (VMA) to monitor and control a wide
variety of HVAC equipment.
Note: The IOM3733 model is only available
in certain regions. Contact your local Johnson
Controls representative for more information.
IOM expansion modules operate on an RS-485
BACnet® MS/TP bus and integrate into IOMs
communicate using the BACnet MS/TP protocol
when directly connected to the FC bus.
Note: With Release 10.1 and later of the
Controller Configuration Tool (CCT), VMAs, FECs,
and FACs can be configured to communicate
by using either the BACnet MS/TP or the N2
field bus networking protocol. The operation of
the IOM is not affected by the selection of the
BACnet MS/TP or the N2 protocol in the host
controller, when the IOM is connected to the
host controller using the SA bus.
North American emissions
compliance
United States
This equipment has been tested and found to
comply with the limits for a Class A digital device
pursuant to Part 15 of the FCC Rules. These limits
are designed to provide reasonable protection
against harmful interference when this equipment
is operated in a commercial environment. This
equipment generates, uses, and can radiate radio
frequency energy and, if not installed and used in
accordance with the instruction manual, may cause
harmful interference to radio communications.
Operation of this equipment in a residential area
may cause harmful interference, in which case the
users will be required to correct the interference at
their own expense.
Canada
This Class (A) digital apparatus meets all the
requirements of the Canadian Interference-Causing
Equipment Regulations.
Cet appareil numérique de la Classe (A) respecte
toutes les exigences du Règlement sur le matériel
brouilleur du Canada.
Installation
Observe these guidelines when installing an
expansion module:
• Transport the expansion module in the original
container to minimize vibration and shock
damage.
• Verify that all parts shipped with the expansion
module.
• Do not drop the expansion module or subject it
to physical shock.
Parts included
• One MS-IOM expansion module with removable
terminal blocks (Power and SA/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
*24101431140E*
Part No. 24-10143-1140 Rev. E
2020-10-30
(barcode for factory use only)
MS-IOM3733

Physical features
The following figure displays the physical features
of the IOM, and the accompanying table provides a
description of the physical features and a reference
to further information where required.
Figure 1: IOM3733 physical features
Table 1: IOM3733 feature callouts and
descriptions
Callo
ut Physical feature: description and references
1 Binary Output (BO) Terminal Block (see Table 2)
2 Mounting Clip (Three Total) (see Figure 1)
3Device Address DIP Switch Block (see Setting the device
address )
424 VAC, Class 2 Supply Power Terminal Block (see Supply
power terminal block)
5Cover Lift Tab (One of Two) (see Removing the expansion
module cover)
6Sensor Actuator (SA) Bus / Field Controller (FC) Bus
Terminal Block (see SA/FC bus terminal block)
7End-of-Line (EOL) Termination Switch (see Setting the
End-of-Line (EOL) switch)
8 Binary Input (BI) Terminal Block (see Table 2)
9 LED Status Indicators
Mounting
Observe the following guidelines when mounting an
expansion module:
• Ensure the mounting surface can support the
expansion module, DIN rail, and any user-
supplied enclosure.
• Mount the expansion module horizontally on
35 mm DIN rail whenever possible.
• Mount the expansion module in the proper
mounting position (Figure 2).
• Mount the expansion module on a hard, even
surface whenever possible in wall-mount
applications.
• Use shims or washers to mount the expansion
module securely and evenly on the mounting
surface.
• Mount the expansion module in an area free
of corrosive vapors and observe the Ambient
Conditions requirements in Table 9.
• Provide for sufficient space around the
expansion module for cable and wire
connections for easy cover removal and good
ventilation through the expansion module (50
mm [2 in.] minimum on the top, bottom, and
front of the expansion module).
• Do not mount the expansion module on
surfaces prone to vibration, such as duct work.
IOM3733 Input/Output Module Installation Guide2

• Do not mount the expansion module in areas
where electromagnetic emissions from other
devices or wiring can interfere with expansion
module communication.
Observe these additional guidelines when mounting
an expansion module in a panel or enclosure:
• Mount the expansion module so that the
enclosure walls do not obstruct cover removal
or ventilation through the expansion module.
• Mount the expansion module so that the power
transformer and other devices do not radiate
excessive heat to the expansion module.
• Do not install the expansion module in an
airtight enclosure.
Figure 2: Mounting positions
Mounting features and dimensions
See the following figure for mounting dimensions
listed in millimeters and inches. Inches are listed
in parenthesis. The following figure also illustrates
the DIN rail channel and the mounting clips in an
extended position.
Figure 3: Back of expansion module
DIN rail mount applications
About this task:
Mounting the expansion module horizontally on 35
mm (1.4 in.) DIN rail is the preferred method.
To mount an expansion module on a 35 mm DIN
rail, complete the following steps:
1. Securely mount a 20 cm (8 in.) or longer
section of 35 mm (1.4 in.) DIN rail, horizontally
and centered in the desired space.
2. Pull the two bottom mounting clips outward
from the expansion module to the extended
position.
3. Hang the expansion module on the DIN rail by
the hooks at the top of the (DIN rail) channel
on the back of the expansion module, and
position the expansion module snugly against
the DIN rail.
4. Push the bottom mounting clips inward (up)
to secure the expansion module on the DIN
rail.
To remove the expansion module from the
DIN rail, pull the bottom mounting clips
out to the extended position and carefully
lift the expansion module off the DIN rail.
Wall mount applications
About this task:
IOM3733 Input/Output Module Installation Guide 3

To mount an expansion module directly on a wall
or other flat vertical surface, complete the following
steps:
1. Pull the two bottom mounting clips outward
and ensure they are locked in the extended
position.
2. Mark the mounting hole locations on the wall
using the provided dimensions and one of the
mount positions, vertical or horizontal. You
can also hold the expansion module 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 expansion module 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.
Wiring
CAUTION
Risk of Electric Shock
Disconnect the power supply before making electrical
connections to avoid electric shock.
ATTENTION
Mise En Garde: 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.
ATTENTION
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 electrical
ratings. Exceeding electrical ratings can result
in permanent damage 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 components. Use proper electrostatic
discharge precautions during installation,
setup, and servicing.
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 expansion module. Observe the
following guidelines when wiring an expansion
module:
Input and output terminal blocks
The input terminal blocks are mounted on the
bottom of the expansion module and the output
terminal blocks are mounted on the top of the
expansion module.
SA/FC bus terminal block
An IOM can be connected to an SA bus or an FC bus,
but not to both buses simultaneously. The SA/FC
IOM3733 Input/Output Module Installation Guide4

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 expansion module,
and the other expansion modules in a daisy-chain
configuration using 3-wire twisted, shielded cable as
shown in the following figure.
Figure 4: FC bus terminal block wiring
When connecting the IOM to an SA bus, wire the bus
terminal block plugs on the expansion module and
other SA bus devices in a daisy-chain configuration
using 4-wire twisted, shielded cable as shown in
Figure 5.
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 supplies 15
VDC to devices on the SA bus requiring power.
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 expansion
module.
Wire the 24 VAC supply power wires from the
transformer to the HOT and COM terminals on the
terminal plug as shown in Figure 6. The middle
terminal on the supply power terminal block is not
used.
Figure 6: 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 expansion module 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 expansion module
does not require an earth ground connection.
IOM3733 Input/Output Module Installation Guide 5

Terminal Wiring Guidelines,
Functions, Ratings, and
Requirements
Input and output wiring guidelines
The following table provides information and
guidelines about the functions, ratings, and
requirements for the input and output terminals;
and references guidelines for determining proper
wire sizes and cable lengths.
In addition to the wiring guidelines in the following
table, observe these guidelines when wiring 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 required for input and
output cables that are exposed to high
electromagnetic or radio frequency noise.
• Inputs or 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.
IOM3733 Input/Output Module Installation Guide6

I/O terminal blocks, ratings, and
requirements table
Table 2: IOM3733 terminal blocks, functions, ratings, requirements, and cables
Terminal block label Terminal
label Function, ratings, requirements Determine wire size and maximum cable length
Binary Input - Dry Contact Maintained Mode
0.01 second minimum pulse width
Internal 16V, 10K ohm pull up
INnBinary Input - Pulse Counter/Accumulator Mode
0.01 second minimum pulse width
(50 Hz at 50% duty cycle)
Internal 16V, 10K ohm pull up
BINARY INPUT
ICOMnBinary Input Common for all Binary Input (IN) terminals
See Guideline A in Table 3.
OUTn
Binary Output - 24 VAC Triac (External Power)
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
BINARY OUPUT
(External Power Source
Only)
OCOMnBinary Output Common (for OUTn terminal)
See Guideline C in Table 3.
Cable length guidelines for required wire
sizes
The following table defines cable length guidelines
for the various wire sizes that may be used for
wiring low-voltage (<30 V) input and outputs
Table 3: Cable length guidelines for required wire sizes for low-voltage (<30 V) inputs and outputs
Guideline Wire size/Gauge and type Maximum cable length
and type Assumptions
1.0 mm (18 AWG) stranded copper 457 m (1,500 ft) twisted
wire
0.8 mm (20 AWG) stranded copper 297 m (975 ft) twisted wire
0.6 mm (22 AWG) stranded copper 183 m (600 ft) twisted wire
A
0.5 mm (24 AWG) stranded copper 107 m (350 ft) twisted wire
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.
1.0 mm (18 AWG) stranded copper 229 m (750 ft) twisted wire
0.8 mm (20 AWG) stranded copper 137 m (450 ft) twisted wire
0.6 mm (22 AWG) stranded copper 91 m (300 ft) twisted wire
B
0.5 mm (24 AWG) stranded copper 61 m (200 ft) twisted wire
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.
CSee Figure 7 to select wire size/gauge.
Use stranded copper wire
See Figure 7 to determine
cable length. Use twisted
wire cable.
N/A
Maximum wire length by current and
wire size
Use the following figure to estimate the maximum
cable length relative to the wire size and the load
current (in mA) when wiring inputs and outputs.
This figure applies to low-voltage (<30 V) inputs and
outputs only.
IOM3733 Input/Output Module Installation Guide 7

Figure 7: Maximum wire length for low-voltage
Inputs and Outputs by current and wire size
Communication bus and supply power
wiring guidelines
Communications bus and supply power terminal
blocks, ratings, and requirements 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 communication buses and 24 VAC supply power.
In addition, observe these guidelines when wiring
an SA or FC bus and 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 required 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.
Communications bus and supply power terminal blocks, ratings, and requirements
Table 4: Communications bus and supply power terminal blocks, functions, ratings, requirements, and
cables
Terminal block/Port
label Terminal labels Function, electrical ratings/Requirements required cable type
+
-FC or SA Bus Communications
COM Signal Reference (Common) for FC or SA Bus
communications
FC BUS
or
SA BUS SHLD
or
SA PWR
SHLD on FC Bus: Isolated terminal (optional
shield drain connection)
SA PWR on SA Bus: 15 VDC power lead
connection.
Note: The SA PWR terminal on an IOM
expansion module does not supply 15
VDC. The SA bus supervisor supplies 15
VDC to devices on the SA bus requiring
power.
FC Bus: 0.6 mm (22 AWG) stranded, 3-wire
twisted, shielded cable required.
SA Bus: 0.6 mm (22 AWG) stranded, 4-wire
(2 twisted-pairs), shielded cable required.
Note: On the SA Bus, the + and - wire
are one twisted pair, and the COM
and SA PWR are the second twisted
pair of wires.
SA/FC BUS
(Port)
RJ-12 6-Position Modular Connector provides:
FC or SA Bus Communications
FC or SA Bus Signal Reference and 15 VDC
Common
Commissioning Converter or ZFR /ZFR Pro
Wireless Router
(Maximum total current draw for SA Bus is 100
mA.)
Wireless Commissioning Converter
retractable cable or 24 AWG 3-pair CAT 3
Cable <30.5 m (100 ft)
HOT 24 VAC Power Supply - Hot
Supplies 20–30 VAC (Nominal 24 VAC)
24~
COM 24 VAC Power Supply - Common
0.8 mm to 1.0 mm
(18 AWG) 2-wire
IOM3733 Input/Output Module Installation Guide8

Note: See Maximum wire length by current
and wire size to determine wire size and cable
lengths for cables.
Note: The SA Bus and FC Bus wiring
recommendations in this table are for MS/
TP bus at 38,400 baud. For more information,
refer to the MS/TP Communications Bus Technical
Bulletin (LIT-12011034).
IOM3733 Input/Output Module Installation Guide 9

Termination details
A set of Johnson Controls termination diagrams
provides details for wiring inputs and outputs.
See the figures in this section for the applicable
termination diagrams.
Table 5: Termination details
Type of device Type of Input/Output Termination diagrams
Dry Contact (Binary Input) BI
Incremental Control to
Actuator (Switch Low,
Externally Sourced)
BO
24 VAC Binary Output
(Switch Low, Externally
Sourced)
BO
24 VAC Binary Output
(Switch High, Externally
Sourced)
BO
Incremental Control to
Actuator (Switch High,
Externally Sourced)
BO
IOM3733 Input/Output Module Installation Guide10

Setup and Adjustments
Setting the device address
Metasys expansion modules are master devices
on MS/TP (SA or FC) buses. Before operating an
expansion module on a bus, set a valid and unique
device address for each expansion module on
the bus. You set an expansion module's device
address by setting the positions of the switches on
the DIP switch block at the top of the expansion
module. Device addresses 4 through 127 are the
valid addresses for these expansion modules.
The following table describes the FC bus and SA
bus device addresses for Johnson Controls MS/TP
communications bus applications.
Table 6: SA/FC Bus Device Address Descriptions
Device
Address Use on Descriptions
0
(Switch 128
Off)
Reserved for FC Bus Supervisory
Controller (not for use on
controllers or expansion modules).
1-3
(Switch 128
Off)
Reserved for peripheral devices
(not for use on controllers or
expansion modules).
4-127
(Switch 128
Off)
Used for MSTP master devices
(controllers and expansion
modules) that are hardwired to an
SA bus or FC bus.
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 must be set
to OFF for all hard-wired SA and FC Bus applications.
Figure 8: Device address DIP switch Block set to
address 21
Note: Metasys expansion modules ship with
switch 128 ON and the remaining address
switches off rendering the expansion module
wired subordinate devices, which do not
operate on MSTP buses, but do not interfere
with bus operation. Set a valid and unique
device address on the expansion module
before applying power to the expansion
module on the bus.
To set the device addresses on Metasys expansion
modules, complete the following steps:
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, and ensure that switch 128
remains set to OFF.
Note: To do this, 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 switches 16, 4,
and 1 to ON (16+4+1= 21) and all other
switches to OFF.
3. Set a unique and sequential device address for
each of the expansion module connected on
the SA or FC bus, starting with device address 4.
Note: To ensure the best bus
performance, set sequential device
addresses with no gaps in the device
address range (for example, 4, 5, 6, 7, 8,
9). The controllers/expansion modules do
not need to be physically connected on
the bus in their numerical device address
order.
4. Write each expansion module's device address
on the white label below the DIP switch block
on the expansion module's cover.
Removing the expansion module
cover
About this task:
IOM3733 Input/Output Module Installation Guide 11

Important: Electrostatic discharge can damage
expansion module components. Use proper
electrostatic discharge precautions during
installation, setup, and servicing to avoid
damaging the expansion module.
Important: Disconnect all power sources to
the expansion module before removing the
cover and changing the position of any jumper
or the EOL switch on the expansion module.
Failure to disconnect power before changing
a jumper or EOL switch position can result in
damage to the expansion module and void any
warranties.
The expansion module 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 expansion module cover,
complete the following steps:
1. Place your fingernails under the two cover
lift tabs (Figure 1) 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 onto the latches until they snap into the
latched position.
Setting the End-of-Line (EOL) switch
About this task:
Each expansion module has an EOL switch, which,
when set to ON, sets the expansion module as a
terminating device on the bus. The default EOL
switch position is OFF.
Figure 9: End-of-Line switch positions
To set the EOL switch, complete the following steps:
1. Determine the physical location of the
expansion module on the FC bus.
2. Determine if the expansion module must be
set as a terminating device on the bus.
Note: For detailed information regarding
EOL termination rules and EOL switch
settings on FC buses, refer to the MS/
TP Communications Bus Technical Bulletin
(LIT-12011034).
3. If the expansion module is a terminating
device on the FC bus, set the EOL switch
to ON. If the expansion module is not a
terminating device on the bus, set the EOL
switch to Off.
When a expansion module is connected to
power with its EOL switch set to ON, the
amber EOL LED on the expansion module
cover is lit.
Commissioning the Expansion
Modules
You commission expansion modules with the
Controller Configuration Tool (CCT) software, either
via a Zigbee wireless dongle, through MAP 4.2+/
BACnet Router (Mobile Access Portal (MAP) Gateway
at version 4.2 or above), or in BACnet™ router mode
when connected to an SNC, SNE, NAE or NCE. Refer
to the Controller Tool Help (LIT-12011147) for detailed
information on commissionings.
Firmware Package File
The MS-FCP-0 equipment controller firmware
package files are required for CCT to configure and
commission the controllers. The firmware package
files also allow you to upgrade an existing IOM
to the latest firmware release available for that
expansion module.
Beginning at CCT Release 13, the firmware package
files are orderable separately; they are not included
with CCT. They are obtained from the Metasys
software licensing portal, and are loaded and
licensed on the computer/server that is running CCT.
For additional information about the firmware
package files, refer to the CCT Installation Instructions
(LIT-12011259).
IOM3733 Input/Output Module Installation Guide12

LED status and states
Observe the Status LEDs on the front of the
expansion module. Table 7 provides LED status
indicator information for troubleshooting the
expansion module.
Table 7: Status LEDs and description of LED states
LED label LED color Normal LED
state Description of LED states
POWER Green On Steady
Off Steady = No Supply Power. The expansion module’s
polyswitch/resettable fuse may be open. Check output wiring for
short circuits and cycle power to expansion module.
On Steady = Power Connected
FAULT Red Off Steady
Off Steady = No Faults
On Steady = Device Fault
Blink - 2 Hz = Download or Startup in progress: not ready for
normal operation
SA/FC BUS Green Blink - 2 Hz
Blink - 2 Hz = Data Transmission (normal communication)
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)
On Steady = EOL switch in ON position
Off Steady = EOL switch in Off position
IOM3733 Input/Output Module Installation Guide 13

Accessories
Table 8: Accessories Ordering Information
Product Code Number Description
Mobile Access Portal
(MAP) Gateway
Refer to the Mobile Access Portal Gateway Catalog Page (LIT-1900869) to identify the
appropriate product for your region.
TL-CCT-0 Controller Configuration Tool (CCT) Software
MS-FCP-0 Field Controller Firmware Package Files for CCT
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-CBLTSTAT Cable adapter for connection to 8-pin TE-6700 Series sensors
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
IOM3733 Input/Output Module Installation Guide14

Technical specifications
Table 9: IOM3733 technical specifications
Product Code Number
MS-IOM3733-0 Input/Output Expansion Module
Note: This model is only available in certain regions. Contact your local Johnson
Controls representative for more information.
Power Requirement 24 VAC (nominal, 20 VAC minimum/30 VAC maximum), 50/60 Hz, power supply Class 2
(North America), Safety Extra-Low Voltage (SELV) (Europe)
Power Consumption 14 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 DIP switch set; valid expansion module device addresses 4–127 (Device addresses 0–3 and
128–255 are reserved and not valid expansion module addresses.)
Communications Bus
BACnet MS/TP, RS-485:
3-wire FC bus between the supervisory controller and expansion modules (for MS/TP bus
communications at 38,400 baud)
4-wire SA bus between expansion module, network sensors and other sensor/actuator
devices, includes a lead to source 15 VDC supply power (from controller or expansion
module) to bus devices (for MS/TP bus communications at 38,400 baud)
Processor RX631 Renesas® 32-bit microcontroller
Memory 4 MB external serial flash memory and 768 KB internal flash and 128 KB internal RAM
Input and Output Capabilities
8 - Binary Inputs: Defined as Dry Contact Maintained or Pulse Counter/Accumulator
Mode
8 - Binary Outputs: Defined as 24 VAC Triac (external source power only)
Terminations Input/Output: Fixed Screw Terminal Blocks
SA/FC Bus and Supply Power: 4-Wire and 3-Wire Pluggable Screw Terminal Blocks
Mounting Horizontal on single 35 mm DIN rail mount (preferred), or screw mount on flat surface
with three integral mounting clips on expansion module
Housing Enclosure material: ABS and polycarbonate UL94 5VB; self-extinguishing, plenum-rated
Protection Class: IP20 (IEC529)
Dimensions (Height x Width x Depth)
150 mm x 164 mm x 53 mm (5-7/8 in. x 6-1/2 in. x 2-1/8 in.) including terminals and
mounting clips
Note: Mounting space requires an additional 50 mm (2 in.) space on top, bottom
and front face of the expansion module for easy cover removal, ventilation and wire
terminations.
Weight 0.5 kg (1.1 lb)
Compliance
United States: UL Listed, File E107041, CCN PAZX, UL 916, Energy Management
Equipment
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 18 Listed and
Certified BACnet Smart Actuator (B-SA)
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.
IOM3733 Input/Output Module Installation Guide 15

Repair information
If an expansion module fails to operate within its
specifications, replace the expansion module. For
a replacement expansion module, contact your
Johnson Controls representative.
Product warranty
This product is covered by a limited
warranty, details of which can be found at
www.johnsoncontrols.com/buildingswarranty.
Software terms
Use of the software that is in (or constitutes)
this product, or access to the cloud, or hosted
services applicable to this product, if any,
is subject to applicable end-user license,
open-source software information, and other
terms set forth at www.johnsoncontrols.com/
techterms. Your use of this product constitutes an
agreement to such terms.
Patents
Patents: https://jcipat.com
Single point of contact
APAC Europe NA/SA
JOHNSON CONTROLS
C/O CONTROLS PRODUCT
MANAGEMENT
NO. 32 CHANGJIJANG RD NEW
DISTRICT
WUXI JIANGSU PROVINCE 214028
CHINA
JOHNSON CONTROLS
WESTENDHOF 3
45143 ESSEN
GERMANY
JOHNSON CONTROLS
507 E MICHIGAN ST
MILWAUKEE WI 53202
USA
Contact information
Contact your local branch office:
www.johnsoncontrols.com/locations
Contact Johnson Controls:
www.johnsoncontrols.com/contact-us
© 2020 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