Emerson

1.Main Functions

• Local bus extension: Acts as dual-right extender for DeltaV LocalBus, extending the communication and power bus to connect additional I/O carrier groups on the right side of the rack.
• Bus power distribution: Transmits 12VDC bus power and high-speed local bus signals between adjacent I/O carrier bases.
• Explosion protection compliance: Certified for Class I Div.2 / Zone 2 hazardous locations (ATEX & IECEx), limiting internal energy to avoid ignition of flammable gas mixtures in explosive areas.
• Mechanical carrier support: Provides mechanical mounting base and backplane interface for DeltaV CHARM I/O modules and terminal blocks.
• Signal transmission: Reliably forwards digital bus signals between DeltaV controller and field I/O cards, maintaining stable communication for analog/digital process signals.
• Built-in circuit protection: Integrates overcurrent and short-circuit protection for local bus power to prevent fault propagation across the I/O rack.
• System diagnostics: Transmits base status and fault information back to DeltaV controller for equipment health monitoring.

Core summary: This explosion-proof I/O base serves as a local bus dual-right extender for Emerson DeltaV DCS. It supplies bus power and extends communication links for additional I/O carriers while meeting explosion-proof requirements for hazardous process zones.www.plcva.com.

Rosemount KJ4001X1-NA1 Explosion-proof I/O Base

2. Applications

1. Petrochemical & refinery plants DeltaV DCS cabinet I/O expansion for process control loops in explosive hazardous areas.
2. Oil & gas industry Onshore gas plants, crude oil processing facilities, offshore platform control cabinets.
3. Power generation industry Thermal power plant DCS control system, auxiliary boiler and gas pipeline monitoring.
4. Chemical manufacturing Continuous chemical production with flammable media, Zone 2 classified control rooms and local I/O cabinets.
5. Pharmaceutical & pulp and paper plants Process automation with explosion risk, requiring DeltaV CHARM I/O architecture expansion.
6. Spare part replacement & system retrofit Used as replacement spare or expansion component for existing Emerson DeltaV installed systems.www.plcva.com.

Rosemount KJ4001X1-NA1 Explosion-proof I/O Base

3. Product Features Summary

• Designed for Emerson DeltaV DCS CHARM I/O architecture, dual-right local bus extension function.
• Explosion-proof certification for Zone 2 / Class I Div.2 hazardous explosive environments.
• Transmits both local bus communication signal and 12VDC power supply to extended I/O carriers.
• Wide operating temperature range (-40℃ ~ +60℃), vibration-resistant for heavy industrial continuous operation.
• Compact rack-mounted structure, easy installation and modular expansion of I/O rack capacity.
• Integrated overcurrent and short-circuit protection to improve system safety.
• Widely used as spare replacement for legacy DeltaV DCS cabinets in oil, gas and chemical sites.

Rosemount KJ4001X1-NA1 Explosion-proof I/O Base

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