Emerson KJ2221X1-BA1 Repeater Module Specs

The KJ2221X1-BA1 repeater module from Emerson extends communication distances between DeltaV system segments. This unit regenerates weakened signals and forwards them along the network path. Engineers select this module when they need dependable long-run communication and quick chassis installation.

Technical Specifications

Parameter	Specification
Product Model	KJ2221X1-BA1
Module Type	Repeater Module
Function	Signal regeneration and network extension
Interface	Backplane connector, network segment contacts
Mounting	DeltaV chassis slot
Operating Temperature	0°C to 60°C
Storage Temperature	-40°C to 85°C
Weight	Approx. 0.24 kg
Dimensions	Approx. 155 mm × 96 mm × 26 mm
Energy Storage	On-board capacitors for signal rail buffering
Component Count	Repeater circuit with interface components

Interface and Signal Details

The KJ2221X1-BA1 connects two network segments through dedicated backplane contacts. The repeater circuit restores signal amplitude before forwarding data downstream. Therefore, technicians gain extended network reach without extra gateway hardware. The module seats in one chassis slot and draws power from the shared rail.

Physical and Environmental Parameters

The module measures roughly 155 mm by 96 mm by 26 mm and weighs about 0.24 kg. Its slim housing fits dense cabinets and simplifies panel layout. Meanwhile, the 0°C to 60°C operating range covers typical control room conditions. The on-board capacitors buffer the signal rail during brief supply dips.

Why This Module Matters

Plant teams value the KJ2221X1-BA1 for its dependable signal regeneration and easy servicing. The capacitor bank keeps network traffic stable during load swings. As a result, communication errors drop and segment uptime improves noticeably. Technicians also appreciate the clear status indicators and tool-free slot installation.