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)
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
Compliance
BACnet International: BACnet Testing Laboratories (BTL) Protocol Revision 15 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.
Product warranty
This product is covered by a limited
warranty, details of which can be found at
www.johnsoncontrols.com/buildingswarranty.
IOM3733 Input/Output Module Installation Guide14
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