Product Procurement & Buyer Guide
The 1771-IAN module solves a critical industrial need for high-density input handling. It directly converts AC signals from devices like limit switches and pushbuttons into usable logic levels for your PLC-5 processor. This eliminates the need for multiple smaller modules.
You can use this module to monitor 32 separate on/off sensors at once. This design saves valuable rack space in your control cabinet. It also reduces the total wiring complexity for your system integrators.
This module operates on a standard 120 Volts AC/DC voltage category. It supports an AC operating voltage range of 85-138 Volts. This flexibility makes it suitable for global industrial power systems. It protects your system with a maximum AC off-state current of 3.0 Miliamperes.
The signal processing is reliable for discrete control applications. The module features a typical AC signal delay (On) of 10 (+/- 7) ms. The delay turns off after a typical AC signal delay (Off) of 20 (+/- 15) ms. These timings ensure your processor reads the correct state.
Consider the backplane current load for your power budget. This unit draws a steady 280 Miliamperes from the chassis. It has a maximum power dissipation of 7 Watts. This thermal dissipation equals 24.1 BTU/hr, which is manageable for your enclosure cooling.
Step-by-Step User & Installation Guide
Installing this module begins with choosing the correct rack location. You must insert it into a 1771 I/O chassis with a PLC processor. The module uses specific keying bands for proper slot alignment. Find the band between pins 20 and 22 for the upper connector. The lower connector key sits between pins 16 and 18.
The module uses a 1771-WN wiring arm for all field connections. This arm allows you to replace the module without disconnecting wiring. You simply unplug the arm from the old module. Then you plug it into the new replacement unit. This feature cuts downtime significantly.
Connect your input devices to the four sets of eight inputs. Each group handles wires from pushbuttons or pilot lights. The module contains optoelectrical isolation to protect your system circuits. This isolation guards against electrical transients and voltage spikes.
The front panel provides 32 red status indicators. These LEDs show the current state of each individual input channel. This visual feedback helps technicians verify wiring instantly. It also helps you troubleshoot signal issues quickly on site.
The module supports both ½ and 1-slot I/O addressing. This flexibility lets you optimize your rack addressing scheme. You can configure it to fit your specific application layout. The compact dimensions are 3.5 x 6.5 x 2.0 inches. This pocket-friendly size fits easily into crowded cabinets.
Logistics & Standard Packaging Details
- One Allen-Bradley 1771-IAN PLC 5 Digital AC/DC Input Module
- One 1771-WN wiring arm for field wiring connections
- Anti-static packaging to protect sensitive electronics
- Product documentation and technical specifications sheet
We ship this module using express delivery services. Our logistics partners include FedEx, UPS, and DHL. This ensures fast and reliable delivery to your facility.
