Allen-Bradley 1794-ACN15 Flex I/O ControlNet Adapter Module

Product Overview

The Allen-Bradley 1794-ACN15 is a Flex I/O communication adapter module. It supports the ControlNet protocol. The module enables network connectivity for up to eight I/O modules. It provides a single ControlNet port with a 5 Mbps data rate. This adapter converts input power to backplane power for adjacent modules. It also offers status indicators for easy diagnostics. This adapter belongs to the 1794 Flex I/O family. It is a high-reliability solution for industrial automation.

Application Scenarios

This adapter is ideal for distributed I/O systems. It connects remote I/O modules to a ControlNet network. Common applications include manufacturing lines, process control, and material handling. It can withstand harsh environments with its IP20 rating. The module operates in temperatures from 0 to 55 °C. This module also suits hazardous locations with European Zone 2 and North American approvals.

Technical Specifications

The 1794-ACN15 has key parameters:

• Manufacturer: Allen-Bradley (Rockwell Automation)
• Product Type: Redundant Media ControlNet Adapter
• Communication Port: One (1) ControlNet
• Communication Rate: 5 Mbps
• Input Voltage: 19.2 to 31.2 V DC
• Flexbus Output Current: 640 mA maximum
• Current Draw: 450 mA maximum
• Power Dissipation: 4.6 W maximum at 19.2 V DC
• Inrush Current: 23 A for 2 milliseconds
• Isolation Voltage: 850 V DC
• Operating Temperature: 0 to 55 °C
• Storage Temperature: -40 to 85 °C
• Vibration: 5 g @ 10-500 Hz
• Operating Shock: 30 g peak acceleration
• Weight: 0.23 kg (0.50 lbs)
• Dimensions: 87 x 94 x 69 mm (3.6 x 3.7 x 3.44 inches)
• Mounting: DIN Rail or Panel
• Protection Rating: IP20

Installation & Maintenance Guide

Mount the 1794-ACN15 on a DIN rail. Ensure proper grounding to the chassis. Use a zinc-plated yellow-chromate steel DIN rail. Connect power wiring with appropriate wire sizes. Single wire: 0.33 to 2.5 mm² (22-12 AWG). Double wire: 0.33 to 1.3 mm² (22-16 AWG). Use copper wire rated at 75 °C or greater. Keep power wiring under 10 meters (32.8 feet). The module has three status indicators: I/O Status, Comm A, and Comm B. Each shows red or green for diagnostics. No regular maintenance is required beyond periodic inspection.

Packing List

The package includes one 1794-ACN15 ControlNet adapter module and an installation guide. All orders are shipped via FedEx, UPS, or DHL.