1746-IM16 Digital AC Input Module 16-Pt | Allen-Bradley SLC 500

Product Overview

The Allen-Bradley 1746-IM16 is a 16-point digital high-voltage AC input module engineered for the SLC 500 programmable controller system by Rockwell Automation. Designed to interface directly with 200/240V AC line-voltage discrete field devices, it operates across an input voltage range of 170 to 265V AC at 47–63 Hz. Featuring robust dielectric isolation of 1500V AC for 1 minute, rapid response times, and standard Removable Terminal Block (RTB) wiring compatibility, this unit delivers high signal integrity in rugged industrial control environments while weighing approximately 0.48 kg.

Key Advantages

• High-Voltage AC Interface: Operates directly on 170–265V AC line power without requiring interposing signal conditioning or step-down transformers.
• 16 High-Density Channels: Accommodates 16 discrete input signals in a single SLC 500 chassis slot to maximize backplane space efficiency.
• Heavy-Duty Environmental Resilience: Rated for operational shock up to 30G and 2G vibration resistance across a 10 to 500 Hz frequency spectrum.
• 1500V AC Dielectric Protection: High galvanic isolation safeguards backplane logic components against line-side electrical surges and field noise.
• Removable Terminal Block (RTB): Allows fast system maintenance and modular replacements without disturbing existing field wire harnesses.

Technical Specifications

Frequently Asked Questions

Q1: What is the operating voltage range for the 1746-IM16 AC input module?

A1: The module accepts input voltages ranging from 170 to 265V AC at standard line frequencies of 47 to 63 Hz.

Q2: What are the input signal turn-on and turn-off response times?

A2: The turn-on response time (Off to On) is 15 ms, and the turn-off response time (On to Off) is 10 ms.

Q3: What level of electrical isolation does the 1746-IM16 provide?

A3: It features optical dielectric withstand tested at 1500V AC for 1 minute between backplane logic and inputs.