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