The Emerson KJ2102X1-CA1, also cataloged as the 12P2742X012 Migration Carrier, serves as the primary KJ2102X1-CA1 Adapter Card utilized to execute physical wire termination and signal bridge transition across Emerson DeltaV and legacy RS3 platforms.
Hardware Specifications
Parameter
Specification
Model
KJ2102X1-CA1
Brand
Emerson
Part Number
12P2742X012
Origin
USA
Weight
0.85 kg
Dimensions
210 mm x 135 mm x 45 mm
Operating Temp
-40 to 70 deg C
Power Consumption
Passive (no active backplane bus draw)
System Architecture
DeltaV DCS / RS3 Migration
Terminal Isolation
Channel-to-channel isolation supported via passthrough
Channel-to-Channel Isolation and Galvanic Signal Termination
Designed to bridge legacy Fisher-Rosemount RS3 field wiring harnesses with modern DeltaV S-Series or M-Series I/O cards, the KJ2102X1-CA1 provides direct trace pin-out mapping to preserve existing field termination assemblies (FTAs). The carrier incorporates high-integrity trace separation to maintain channel-to-channel isolation and minimize common-mode loop cross-talk across 4-20 mA HART analog loops and discrete I/O channels. Passive line impedance conditioning ensures seamless signal continuity without requiring complete field re-wiring during system hot-cutover operations.
Frequently Asked Questions
Q: Can the KJ2102X1-CA1 migration carrier be installed while adjacent DeltaV system I/O bases are powered?
A: Yes, the migration carrier is a passive interconnect assembly that supports installation alongside energized I/O carriers, provided local hazardous area hot-work protocols and field wiring safety standards are strictly maintained.
Q: Does installing the RS3 migration carrier introduce significant loop resistance to 4-20 mA HART signals?
A: No, the trace resistance through the edge connectors and bus routing is negligible (under 0.1 ohms per line), maintaining standard HART frequency band transparency and full 4-20 mA loop compliance.
Field Installation Guidelines
Inspect legacy RS3 edge connectors for oxidation or pin misalignment before mating with the KJ2102X1-CA1 carrier card slots.
Align the carrier retention clips with the targeted DeltaV baseplate guide slots and press firmly until both side latches snap into position.
Secure all field termination ground straps directly to the main Instrument Earth (IE) bus bar using low-impedance copper conductors.
Verify pin-to-pin signal continuity on all active channels before energizing field loops or attaching high-density DeltaV I/O interface cables.
