Overview

The KJ2221X1‑BA1 is part of Emerson’s VS6002 Net Repeater family, designed specifically for Safety Instrumented Systems (SIS) within the DeltaV™ platform. Its primary function is to regenerate and extend SISNet signals, allowing large plant networks to maintain robust communication between controllers, I/O subsystems, and operator stations.

This repeater is hazardous‑area certified (ATEX, IECEx, FM) and engineered for operation in harsh industrial conditions such as oil & gas, chemical, and power generation facilities.

Technical Data

Key Features

• Signal regeneration: Extends SISNet communication range for larger networks.

• Noise immunity: Improves reliability in electrically noisy environments.

• Hazardous‑area certified: Suitable for Zone 2 / Class I Div. 2 installations.

• Compact design: Easy integration into DeltaV carriers.

• Rugged build: Operates reliably under extreme temperatures and harsh conditions.

Typical Applications

• Large Plant Networks: Extends SISNet communication across wide areas.

• Oil & Gas Pipelines: Ensures reliable data transmission over long distances.

• Chemical Plants: Improves network stability in noisy environments.

• Power Generation: Supports distributed control systems across turbine halls.

Example:
In a refinery automation system, the VS6002 KJ2221X1‑BA1 repeater allows SIS controllers and operator stations in different buildings to communicate reliably without signal loss.

FAQ

Q1: What is the function of the VS6002 KJ2221X1‑BA1?
It regenerates and extends SISNet signals for DeltaV Safety Instrumented Systems.

Q2: What power does it require?
24 VDC at 300 mA maximum.

Q3: Is it hazardous‑area certified?
Yes, it carries ATEX, IECEx, FM, and CE certifications.

Q4: What is the operating temperature range?
–40°C to +70°C.

Q5: What industries use this module?
Oil & gas, chemical, petrochemical, and power generation.