The 1734-IA2 is a digital AC input module from the Rockwell Automation POINT I/O family. It provides two isolated channels rated for 120 Volts AC. This module reads true AC signals from sensors, limit switches, and pushbuttons. Its compact footprint saves valuable panel space. Use it for reliable discrete input acquisition in industrial environments.
Theme A: Product Procurement & Buyer Guide
The 1734‑IA2 solves several pain points for procurement managers and engineers. It supports a wide input range from 85 to 132 Volts AC at 47 to 63 Hz. This flexibility allows you to use it with global power standards. The module draws only 75 milliamps from the POINTBus at 5V DC. That low power consumption reduces overall system energy costs.
You can integrate the 1734‑IA2 into any ControlNet, DeviceNet, or EtherNet/IP network. The module uses an open‑style enclosure weighing just 30.9 grams. Its dimensions are 56.0 x 12.0 x 75.5 millimeters. You can mount it horizontally or vertically without additional hardware. This design simplifies cabinet layout and airflow planning.
The two input channels share a common group, but each has an individual status LED. This makes troubleshooting fast during commissioning. The nominal input impedance is 10.6 kiloohms. That high impedance minimizes loading on your sensor circuits. For engineers, this module offers eight key switch positions for node addressing. Address configuration is straightforward and repeatable.
Isolation voltage is 240 Volts AC continuous, with a tested withstand of 3250V DC for 60 seconds. That provides robust protection against surges. The module dissipates only 0.1 Watts maximum, with thermal dissipation of 3.4 BTU per hour. This keeps the enclosure cool and extends component life. Procurement teams appreciate the low total cost of ownership.
Theme D: Expert Technical Evaluation & Performance Review
From an engineering perspective, the 1734‑IA2 delivers precise AC input detection. The 10.6 kΩ input impedance ensures accurate voltage sensing across the 85‑132V AC range. The module filters line noise effectively due to its 47‑63 Hz frequency acceptance. This makes it suitable for noisy factory floor environments.
The power dissipation of 0.35 Watts at 132V AC is negligible. The thermal rating of 1.19 BTU/hour at 132V AC confirms minimal heat generation. You can place multiple modules side by side without derating. The POINTBus current of 75 mA allows many modules on one bus without exceeding supply limits.
Response time is typical for AC input modules, but the key benefit is the isolation. The 3250V DC hi‑pot test ensures safety during line‑to‑ground faults. The compact design supports high‑density I/O racks. Each module’s physical weight of 1.09 ounces makes it easy to handle during installation.
For performance, the module provides reliable status indication via green LEDs. There is no debounce time specified, but the AC filtering removes most transient chatter. This module works best with standard 120V AC proximity switches and relay contacts. It does not support DC inputs, so use a different model for DC applications.
The 1734‑IA2 is a mature, well‑tested component. It aligns with Allen‑Bradley’s high‑reliability standards. For any automation project needing two AC inputs, this module offers a compact, cost‑effective solution. Engineers can trust its isolation and low power characteristics.
Logistics & Standard Packaging Details
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