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Figure 8: Maximum wire length for low-voltage

Inputs and Outputs by current and wire size

Communications bus and power
supply terminal block rating and
requirements

The following table provides information about

the functions, ratings, and requirements for the

expansion module's communication bus and supply

power terminals. It also provides guidelines for wire

sizes, cable types,and cable lengths when wiring

the expansion module communication buses and

supply power. In addition, 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 4: Communications bus and supply power terminal blocks, functions, ratings, requirements, and

cables

Terminal block/Port

label

Terminal labels

Function, electrical ratings/Requirements

Recommended cable type

+
-

FC or SA Bus Communications

COM

Signal Reference (Common) for FC or SA Bus

communications

FC BUS or SA BUS

SHLD

or

SAPWR

SHLD on FC Bus:

 Isolated terminal (optional shield

drain connection

SAP WR on SA Bus:

 15 VDC power lead connection

Note: 

The SA PWR terminal on an IOM

controller does not supply 15 VDC. The SA

Bus supervisor (FAC, FEC, or VMA) supplies

15 VDC to devices on the SA Bus requiring

power.

FC Bus: 0.6 mm (22 AWG) stranded,

3-wire twisted, shielded cable

recommended.
SA Bus: 0.6 mm (22 AWG) stranded,

4-wire (2 twisted-pairs), shielded

cable recommended.

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.

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

IOM3731-0A Expansion Input/Output Installation Guide

8

Содержание IOM3731-0A

Страница 1: ...easonable 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...

Страница 2: ...nsion 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 1 4 in 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 expan...

Страница 3: ...om 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 the controller directly on a wall or other flat vertical surface complete the following steps 1 Pull the two bottom mounting clips outward and e...

Страница 4: ...mportant 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 1 for terminal block ...

Страница 5: ...nding on which bus the expansion module is operating on The SA FC bus port is connected internally to the SA FC bus terminal block See for more information The SA FC bus port pin assignment is shown in Figure 6 Figure 6 Pin number assignments for sensor SA bus and FC bus ports on expansion modules Supply power terminal block The 24 VAC supply power terminal block is a gray removable 3 terminal plu...

Страница 6: ...ro 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 Requirements Input and output wiring guidelines The following table provides information and guidelines about the functions ratings and re...

Страница 7: ...es 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 t...

Страница 8: ...size and cable length requirements for the SA and FC buses Table 4 Communications bus and supply power terminal blocks functions ratings requirements and cables Terminal block Port label Terminal labels Function electrical ratings Requirements Recommended cable type FC or SA Bus Communications COM Signal Reference Common for FC or SA Bus communications FC BUS or SA BUS SHLD or SAPWR SHLD on FC Bus...

Страница 9: ...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 IOM3731 0A Expansion Input Output Installation ...

Страница 10: ...r 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 modules connected on the SA or FC bus starting with device address 4 Note To ensure the best bus performance set sequential device addresses with ...

Страница 11: ... the controller is not a terminating device on the bus set the EOL switch to Off When a controller is connected to power with its EOL switch set to ON the amber EOL LED on the controller cover is lit Commissioning You commission expansion modules with the Controller Configuration Tool CCT software using NxE Passthru Bluetooth with BTCVT through Mobile Access Portal MAP Gateway at version 4 2 or ab...

Страница 12: ... 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 WNC1800 ZFR182x Pro Wireless field Bus System This system is used for installations...

Страница 13: ...er 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...

Страница 14: ...SON CONTROLS WESTENDHOF 3 45143 ESSEN GERMANY JOHNSON CONTROLS 507 E MICHIGAN ST MILWAUKEE WI 53202 USA For more contact information refer to www johnsoncontrols com locations 2019 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 ...

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