Product Overview
When your control system needs reliable detection of 120V AC signals, the Allen-Bradley 1734-IA2 delivers precise digital input monitoring in a compact POINT I/O package. This industrial automation module provides two isolated input channels with status indicators, making it ideal for discrete sensing applications across manufacturing and process industries. As part of the Rockwell Automation POINT I/O series, the 1734-IA2 integrates seamlessly into existing control architectures, offering a space-saving solution that mounts easily on a DIN rail.
Technical Specifications
The Allen-Bradley 1734-IA2 is engineered for dependable performance. Below are the critical specifications you can rely on:
| Parameter |
Value |
| Manufacturer |
Rockwell Automation |
| Brand |
Allen-Bradley |
| Part Number |
1734-IA2 |
| Series |
POINT I/O |
| Module Type |
Digital AC Input Module |
| Inputs |
2 or 1 group of 2 |
| Input Voltage |
120 Volts AC |
| POINTBus Current |
75 milliamps |
| Power Dissipation |
0.1 Watts Maximum |
| Thermal Dissipation |
3.4 BTU Maximum |
Additionally, the 1734-IA2 supports an isolation voltage of 240V AC continuous and withstands 3250V DC for 60 seconds. Its nominal input impedance is 10.6 kiloohms, and it operates with an input AC power supply of 120V AC nominal at 60 Hz, accepting 85–132V AC at 47–63 Hz. Weighing only 30.9 grams (1.09 oz) and measuring 56.0 x 12.0 x 75.5 mm, this module offers excellent density for control panels.
Industry Applications
The Allen-Bradley 1734-IA2 is perfect for monitoring AC-powered devices such as motor starters, solenoid valves, and limit switches. In a typical packaging line, the module can detect when a machine guard is closed or when a conveyor jam occurs, triggering immediate safety responses. Its 120V AC input rating makes it directly compatible with standard North American industrial power, reducing the need for additional signal conditioning. This module's compact footprint also suits applications where panel space is at a premium, such as in retrofitting older control panels with modern POINT I/O technology.
Installation & Setup Guidance
Mounting the 1734-IA2 is straightforward. The module snaps onto a DIN rail and connects via the POINT I/O backplane. For wiring, ensure the AC supply is disconnected before installation. Connect the 120V AC signal to the input terminals, observing proper polarity for safety. The module features 8 key switch positions to prevent incorrect insertion, and its open-style enclosure allows for easy access to wiring. You can install the module horizontally or vertically, offering flexibility in cabinet layout. Always follow the manufacturer's wiring diagram to avoid damage.
Maintenance & Reliability
Regular inspection of the 1734-IA2 ensures long service life. Check the status indicators periodically to confirm each input is functioning. Clean the module enclosure with a dry cloth to prevent dust accumulation, which could impede heat dissipation. Given its low power dissipation of 0.1W max, the module runs cool, but ensure adequate airflow around the DIN rail. The robust design of the Allen-Bradley 1734-IA2 minimizes downtime, making it a cost-effective choice for continuous operations.
Compatibility & Integration
The 1734-IA2 works with the full POINT I/O family and supports major industrial networks including ControlNet, DeviceNet, and EtherNet/IP when used with appropriate adapters. This flexibility allows integration into existing Allen-Bradley PLC systems or mixed-vendor environments. The module communicates over the POINTBus, drawing only 75mA at 5V DC, which reduces power burden on the backplane. For a complete solution, pair the 1734-IA2 with a 1734-AENTR EtherNet/IP adapter or a 1734-APB DeviceNet adapter, depending on your network architecture.
Selection Guide & Purchasing Advice
Before purchasing the 1734-IA2, verify your system's input voltage requirements and channel count. This module is ideal for applications needing two AC inputs; if you require more, consider the 1734-IA4 (4-input) model. Ensure your backplane has an available slot and that your network adapter supports the POINT I/O series. PLC Source PRO offers genuine Allen-Bradley 1734-IA2 modules with fast shipping and competitive pricing, backed by a team of automation specialists to assist with your selection.