Installation Instructions · Publication 1734-IN511 · Rockwell Automation

POINT I/O Wiring Base Assembly 1734-TB 1734-TBS Install Guide

This document provides installation instructions for the POINT I/O Wiring Base Assembly, covering catalog numbers 1734-TB and 1734-TBS. It details mounting base and removable terminal block (RTB) installation, wire preparation, and wiring procedures for both screw-clamp and spring-clamp termination types. General, environmental, and certification specifications are included. The publication applies to industrial environments rated Pollution Degree 2 and overvoltage Category II.

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10 A Field Power Bus Current Max
-20…+55 Operating Temperature Range
28.8V DC, 120/240V AC Signal Terminal Voltage
65 x 12 x 133.4 mm Dimensions (H x W x D)

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Specifications

General Specifications

Field power bus supply voltage 28.8V DC, 120/240V AC
Field power bus supply current max 10 A
Signal terminal voltage 28.8V DC, 120/240V AC
Signal terminal current 2 A
Dimensions (H x W x D), approx. 65 x 12 x 133.4 mm (2.56 x 0.47 x 5.25 in.)
Weight, approx. (1734-TB) 83.8 g (2.94 oz)
Weight, approx. (1734-TBS) 73.3 g (2.57 oz)
Wire size Solid or stranded copper wire rated at 75 °C (167 °F) or higher, with 1.2 mm (3/64 in.) insulation thickness max. See wiring tables for size ranges.
Enclosure type rating None (open-style)
Terminal base screw torque (1734-TB only) 0.8 N•m (7 lb•in)

Environmental Specifications

Temperature, operating -20…+55 °C (-4…+131 °F)
Temperature, surrounding air max 55 °C (131 °F)
Temperature, nonoperating -40…+85 °C (-40…+185 °F)
Relative humidity 5…95% noncondensing (IEC 60068-2-30)
Vibration 5 g @ 10…500 Hz (IEC 60068-2-6)
Shock, operating 30 g (IEC 60068-2-27)
Shock, nonoperating 50 g (IEC 60068-2-27)

Wiring Without Wire End Ferrule

1734-RTB wire size range 0.25…2.5 mm² (24…14 AWG)
1734-RTBS wire size range 0.08…2.5 mm² (28…14 AWG)
Strip length (1 wire per cavity) 16 ± 1 mm (0.63 ± 0.03 in.)
Wire size for 2 wires per cavity (1734-RTB / 1734-RTBS) 0.75 mm² (18 AWG), stranded wire only
Strip length (2 wires per cavity) 18 ± 1 mm (0.71 ± 0.03 in.)

Wiring With Wire End Ferrule

Strip length tolerance ± 0.4 mm (± 0.016 in.); see the ferrule manufacturer's guidelines
TWIN wire end ferrules Not recommended
Ferrule type Wire end ferrule with insulating collar per DIN 46228-4 and UL 486F

Catalog Number Format

How to read an Allen-Bradley 1734 catalog number. Each position encodes a specific configuration attribute.

Position
Meaning
Example
Assembly catalog number
1734-TB = mounting base (1734-MB) with screw-clamp RTB (1734-RTB)
1734-TB
Assembly catalog number
1734-TBS = mounting base (1734-MB) with spring-clamp RTB (1734-RTBS)
1734-TBS

Certifications & Compliance

c-UR-us: UL Recognized Component Industrial Control Equipment, certified for US and Canada. UL File E195367. UK and CE: UK Statutory Instrument 2016 No. 1101 and EU 2014/35/EU LVD, compliant with EN 61131-2. UK and CE: UK Statutory Instrument 2012 No. 3032 and EU 2011/65/EU RoHS, compliant with EN IEC 63000. Morocco: Arrêté ministériel n° 6404-15 du 1er muharram 1437

Document Contents

Full PDF covers the following topics in detail:

  • Summary of Changes
  • Environment and Enclosure
  • Prevent Electrostatic Discharge
  • About the Assembly
  • Prepare the Wires
  • Wiring without Wire End Ferrule
  • Wiring with Wire End Ferrule
  • Install the Mounting Base
  • Install the Module
  • Install the Removable Terminal Block
  • Wire the RTB
  • Remove a Mounting Base
  • General Specifications
  • Environmental Specifications
  • Certifications
  • Additional Resources

In-Stock Products Covered by This Document

Every product below is in stock at our Charlotte, NC warehouse and covered by this publication. Ships same-day (orders before 4 PM ET) with 2.5-year warranty included.

1734-TB
1734-TB
Allen-Bradley 1734-TB POINT I/O Terminal Base
$49.99

Frequently Asked Questions

What is the difference between the 1734-TB and 1734-TBS assemblies?
The 1734-TB assembly consists of a 1734-MB mounting base and a 1734-RTB removable terminal block that uses screw-clamp terminations. The 1734-TBS assembly consists of a 1734-MB mounting base and a 1734-RTBS removable terminal block that uses spring-clamp terminations.
What is the maximum operating temperature for the 1734-TB and 1734-TBS?
The operating temperature range is -20…+55 °C (-4…+131 °F), with a surrounding air maximum of 55 °C (131 °F).
How many conductors can be wired to a single terminal?
No more than 2 conductors may be wired on any single terminal. When using 2 wires per cavity without a ferrule, only stranded wire at 0.75 mm² (18 AWG) may be used.
What type of DIN rail must be used for proper grounding?
Zinc-plated chromate-passivated steel DIN rail (Allen-Bradley part number 199-DR1; 46277-3; EN50022) must be used. Other materials such as aluminum or plastic that can corrode, oxidize, or are poor conductors can result in improper or intermittent grounding.
How is the spring-clamp RTB (1734-RTBS) wired?
Insert a bladed screwdriver (catalog number 1492-N90, 3 mm diameter blade) into the access hole until it stops and push the screwdriver away from the wire cavity. Then insert the wire into the wire cavity and remove the screwdriver from the access hole.
Can the terminal base be removed while power is applied?
No. The terminal base must not be removed or replaced while power is applied. Interruption of the backplane can result in unintentional operation or machine motion. A shock hazard exists if power is applied to the terminal base.
What wire type is required for the wiring base assembly?
Solid or stranded copper wire rated at 75 °C (167 °F) or higher must be used, with a maximum insulation thickness of 1.2 mm (3/64 in.). Wire size range varies by catalog number and ferrule use; see the wiring tables in the publication for details.

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