Product Introduction
In upgrading legacy distributed I/O systems, the Allen-Bradley 1734-IB8 Digital DC Sinking Input module offers a modern solution for reliable discrete signal acquisition. This POINT I/O module provides eight sinking input channels, accepting a nominal 24VDC signal voltage. It integrates seamlessly with any POINT I/O communication adapter to implement scalable, distributed I/O architectures. The 1734-IB8 replaces older, bulkier input modules, reducing panel space and simplifying wiring.
Technical Specifications Breakdown
| Parameter |
Value |
| Part Number |
1734-IB8 |
| Inputs |
8 sinking (2-5 mA) |
| Input Voltage Range |
10-28.8 VDC |
| Nominal Input Current |
4 mA @ 24 VDC |
| Input Filter Time |
0.5 ms hardware + 0…63 ms user-selectable |
| Power Dissipation |
1.6 W / 5.5 BTU/hr |
| POINTBus Current |
75 mA @ 5 VDC |
| Dimensions |
56 x 12 x 75.5 mm (2.2 x 0.47 x 2.97 in) |
| Weight |
~31.8 g (1.12 oz) |
| Enclosure Type |
Open-style |
These specifications ensure the 1734-IB8 delivers precise signal detection with adjustable filtering to eliminate noise. The low power dissipation and compact footprint make it ideal for high-density I/O layouts.
Industry Applications
When upgrading material handling systems, the Allen-Bradley 1734-IB8 reliably senses limit switches and proximity sensors. In packaging lines, it captures discrete signals from photoelectric sensors, enabling precise control of actuators. For process control retrofits, this module replaces older 120VAC input cards with a modern 24VDC sinking design, reducing energy consumption and improving safety.
Compatibility & Integration
The Allen-Bradley 1734-IB8 operates with any POINT I/O communication adapter, including EtherNet/IP, ControlNet, and DeviceNet versions. It requires a 1734-TB or 1734-TBS wiring base assembly. The module installs on a DIN rail and features a keyswitch position of 1. This compatibility simplifies integration into existing Rockwell Automation architectures, making upgrades straightforward.
Selection Guide & Purchasing Advice
Before purchasing the Allen-Bradley 1734-IB8, verify your communication adapter compatibility and terminal base requirements. The module is stocked by UBEST Automation, a trusted supplier of industrial automation spares. Ensure your system voltage matches the 24VDC nominal input. For bulk orders or technical questions, visit ubest101 for detailed support.