Allen Bradley 1797-IJ2 Flex Ex I/O Frequency Input Module

Overview

The Allen Bradley 1797-IJ2 Flex Ex I/O Frequency Input Module is designed for Flex Ex I/O systems to measure high-speed frequency signals from field devices in hazardous area applications. It provides accurate frequency monitoring and pulse signal processing for industrial automation and process control systems.

General Information

Brand: Allen Bradley

Country of Origin: United States

Manufacturer: Rockwell Automation

Part Number: 1797-IJ2

Series: Flex Ex

Type: Frequency Input Module

Channels: 2 Frequency Input Channels

Application: Hazardous area frequency measurement and speed monitoring

Function: Processes pulse and frequency signals from field devices for controller applications

Installation: Flex Ex I/O system integration

Power Specifications

Supply Voltage: 24 V DC

Power Consumption: Approximately 3 W

Input Type: Frequency and pulse signal inputs

Protection: Intrinsic safety, overload, and short-circuit protection

Indicators: LED status indicators for module operation and diagnostics

Communication & Interface

Communication Type: Flex Ex I/O bus communication

Input Channels: 2 frequency input channels

Signal Type: Pulse and frequency measurement signals

Frequency Range: Supports high-speed frequency signal processing

Diagnostics: Channel status monitoring and fault detection

Environmental

Operating Temperature: −20 to +70 °C

Storage Temperature: −40 to +85 °C

Humidity: 5–95% RH, non-condensing

Protection Rating: IP20

Installation Environment: Hazardous and industrial control areas

Vibration Resistance: Suitable for industrial automation environments

Dimensions & Weight

Dimensions (L × W × H): 94 × 46 × 75 mm

Weight: 0.2 kg

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