Repeater Module Emerson KJ2221X1-BA1 SISNET

Product Overview

The Emerson KJ2221X1-BA1 is a repeater module for DeltaV SISNET local bus networks. It provides reliable power and signal regeneration. This module ensures stable communication in safety instrumented systems. It operates on 24 VDC with a maximum current of 300 mA. The KJ2221X1-BA1 is built for harsh industrial environments. It supports ambient temperatures from -40°C to +70°C. The module meets ISA-S71.04 Class G3 for airborne contaminants.

Application Scenarios

This repeater module is ideal for process safety applications. It works within Emerson DeltaV distributed control systems. Use it in oil and gas refineries. It also fits chemical plants and power generation facilities. The module extends bus length and increases load capacity. It maintains signal integrity over long distances. The KJ2221X1-BA1 supports multiple devices on the same SISNET segment.

Technical Specifications

Input voltage is 24 VDC. Output current is 300 mA maximum. The module withstands 10g shock for 11 milliseconds. Vibration tolerance is 1 mm peak-to-peak from 2 to 13.2 Hz. From 13.2 to 150 Hz, it handles 0.7g. Operating humidity ranges from 5% to 95% non-condensing. The repeater module meets ISA-S71.04 Class G3 for harsh atmospheres. It operates reliably in extreme cold and heat.

Installation & Maintenance Guide

Mount the module on a standard DIN rail. Ensure power supply is off during installation. Connect the local bus cables securely. Check polarity before powering up. Do not exceed 300 mA total load. Keep the module in a clean, dry area. Avoid exposure to corrosive gases. Regularly inspect connections for tightness. Follow all local electrical codes.

Packing List

One Emerson KJ2221X1-BA1 repeater module. One installation manual. No additional accessories are included. The product ships in anti-static packaging. Shipping uses FedEx, UPS, or DHL.