Emerson KJ2221X1-EA1 SIS Net Repeater Carrier – Product Description

Overview

The Emerson KJ2221X1-EA1 is a CHARMs Baseplate/Carrier module for the DeltaV Electronic Marshalling system. It provides a secure mechanical mounting and electrical interface for CHARMs modules, facilitating seamless communication and power distribution. Moreover, its compact and rugged design ensures continuous operation in harsh industrial environments. This baseplate supports flexible assignment of I/O types without rewiring, making it highly adaptable to evolving process automation needs.

Technical Specifications

• Model: KJ2221X1-EA1

• Type: CHARMs Baseplate / Carrier

• System Compatibility: Emerson DeltaV Electronic Marshalling

• Supported Modules: CHARMs AI, AO, DI, DO, IS variants

• Power Supply: 24 VDC nominal

• LocalBus Rating: 12 VDC at 150 mA

• Bussed Field Power Rating: 12 VDC at 300 mA

• Field Circuit Rating: 24 VDC at 32 mA

• Dimensions (H × W × D): 107 × 41 × 105 mm

• Weight: 0.25–0.30 kg

• Operating Temperature: –40 °C to +70 °C

• Storage Temperature: –40 °C to +85 °C

• Humidity Range: 5% – 95% non-condensing

• Shock Resistance: 10 g half-sine wave for 11 ms

• Vibration Resistance: 1 mm peak-to-peak (2–13.2 Hz), 0.7 g (13.2–150 Hz)

• Airborne Contaminants: ISA‑S71.04 Class G3

• Protection Class: IP20

• Certifications: CE, UL, ATEX, IECEx, FM, UKEX (Zone 2 / Class I Div. 2)

• Country of Origin: USA

FAQ 

Q1: What is the purpose of the KJ2221X1-EA1 carrier?
A1: It provides mechanical mounting and electrical interface for CHARMs modules in DeltaV Electronic Marshalling systems.

Q2: Can the modules be replaced while the system is running?
A2: Yes, the carrier supports hot-swappable CHARMs modules without requiring system shutdown.

Q3: Which CHARMs modules are compatible with this carrier?
A3: It supports AI, AO, DI, DO, and intrinsically safe (IS) CHARMs variants.

Q4: Is this carrier suitable for hazardous environments?
A4: Yes, it is certified for Zone 2 / Class I Div. 2 hazardous areas.

Q5: What industries commonly use this module?
A5: Oil & gas, chemical processing, steel production, power generation, and process automation plants.

Q6: What power and communication does the carrier provide?
A6: It distributes 24 VDC field power and LocalBus communication to attached CHARMs modules.