Allen-Bradley 1756-IA16 | ControlLogix 120V AC Input Module

Overview of 1756-IA16

The Allen-Bradley 1756-IA16 is a ControlLogix digital input module engineered for 120V AC applications. It supports an operating voltage range from 74 to 132V AC at 50/60Hz. This module provides 16 input points organized in two groups of 8 channels. It offers reliable signal acquisition while maintaining precise performance under demanding industrial conditions.

Technical Specifications

The 1756-IA16 requires a backplane power consumption of 0.58W. It supports a maximum off-state voltage of 20V and achieves an on-state current of 13mA at 132V AC. Additionally, it can handle a peak inrush current of 250mA, which ensures stable operation during sudden load variations.

The module provides continuous isolation voltage of 125V between each input group. It uses removable terminal blocks, either 1756-TBNH or 1756-TBSH, for simplified wiring and easy maintenance.

Design and Build

The 1756-IA16 comes in an open-style enclosure designed for chassis mounting. It operates within a temperature range of 0 to 60 °C (32 to 140 °F), ensuring durability in standard industrial environments. Input and communication status indicators, along with module health diagnostics, provide clear visual monitoring during operation.

Key Features

• Input Signal: 79 to 132 VAC

• Isolation: 125V continuous between input groups

• Inputs: 16 channels, arranged in two groups of 8

• Power Consumption: 0.58W total backplane usage

• Inrush Current: 250mA peak

• Removable Terminal Blocks: 1756-TBNH, 1756-TBSH

• Operating Temperature: 0...60 °C