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1734-IA4

New Allen-Bradley 1734-IA4 120V AC Sinking Digital Input Unit

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  • Manufacturer: Allen-Bradley

  • Product No.: 1734-IA4

  • Product Type: AC Input Module

  • Product Origin: USA

  • Payment:T/T, Western Union

  • Weight: 30g

  • Shipping port: Xiamen

  • Warranty: 12 months

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Product Overview

The 1734-IA4 is a compact, high-density 120 VAC Discrete Input Module manufactured by Allen-Bradley (Rockwell Automation) as part of the flexible POINT I/O System. Engineered for distributed automation architectures, this module provides Four (4) non-isolated, sinking input channels designed to convert 120 VAC discrete field signals into logic-level data for host processors. Operating across an external input supply range of 85 to 132 VAC (47–63 Hz), it mounts directly onto standard terminal bases such as the 1734-TB, 1734-TBS, 1734-TOP, or 1734-TOPS wiring base assemblies. Featuring a lightweight hardware net weight of 30.9 g (0.0309 kg / 1.09 oz) and key switch position 8, this open-style module offers high-density channel monitoring with an exceptionally low POINTBus backplane current draw of 75 mA at 5V DC.

As illustrated in the product image, the module showcases a ultra-slim, vertical slice design equipped with individual LED status indicators for Module, Network, and channel-level I/O activity, allowing intuitive, real-time diagnostic visibility.

Core Technical Advantages

  • Ultra-Compact POINT I/O Footprint: Highly space-efficient slice design allows high-density field wiring in constrained control enclosures, supporting both horizontal and vertical mounting orientations.
  • Robust Field-to-System Isolation: Rated for 240V continuous isolation (type-tested at 3250V DC for 60 seconds), protecting system-side backplane electronics from field-side voltage transients.
  • Clear Channel Status Diagnostics: Individual yellow status LEDs replicate field input energization state, alongside dedicated visual LEDs for overall Module Status (MS) and Network Status (NS).
  • Keyed Terminal Base Insertion: Configured for Mechanical Key Switch Position 8, preventing accidental insertion of incorrect module types into designated wiring bases during field maintenance.

Technical Specifications

Parameter Attribute Factory Specification Data
Brand / Manufacturer Allen-Bradley / Rockwell Automation
Catalog / Part Number 1734-IA4
Product Family Series POINT I/O System
Number / Type of Inputs Four (4) Non-Isolated, Sinking Digital AC Inputs
Nominal Input Voltage 120 VAC @ 50/60 Hz
Input Voltage Range 85..132 VAC, 47..63 Hz
On-State Voltage / Current 65..132 VAC | 4.0 mA @ 65V to 8.5 mA @ 132V
Off-State Voltage / Current 43 VAC Maximum | 2.7 mA Maximum @ 43 VAC
Nominal Input Impedance 10.6 kΩ
POINTBus Backplane Current 75 mA @ 5.1V DC
Power Dissipation / Thermal 0.50 W @ 132 VAC | 1.71 BTU/hr @ 132 VAC
Physical Net Weight 30.9 g (0.0309 kg / 1.09 oz)
Dimensions (H x W x D) 56.0 x 12.0 x 75.5 mm (2.21 x 0.47 x 2.97 in)
Compatible Base Assemblies 1734-TB, 1734-TBS, 1734-TOP, or 1734-TOPS
Condition / Warranty New & Original in Factory Packaging | 12-Month Warranty

Installation & Field Maintenance Guidelines

Mount vertically or horizontally into compatible 1734 wiring base. Set base keyswitch to Position 8 before inserting module. Ensure 120VAC external line power remains within 85-132VAC limits.

Technical FAQs

Q: What terminal bases are required?
A: Compatible with 1734-TB, 1734-TBS, 1734-TOP, and 1734-TOPS assemblies.

Q: What is the required key switch setting?
A: Turn the mechanical key switch on the terminal base to Position 8.

Q: What is the backplane current draw?
A: Draws 75 mA maximum at 5.1V DC from the POINTBus.

Product Resources

📄 Download PDF
🏷️ Tags: AC Input Module

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