Emerson KL4104X1-BA1 DeltaV Electronic Marshalling Series

The Emerson KL4104X1-BA1, also cataloged as the KL4104X1-BA1 Dual Universal Carrier, operates as a dedicated hardware component for physical mounting and bus routing of CHARM modules within DeltaV Distributed Control System networks.

Hardware Specifications

4-20 mA HART Loop Protocol and Channel-to-Channel Isolation

The dual universal carrier establishes the structural and electrical backbone for DeltaV Electronic Marshalling systems. The circuit pathways within the carrier plate maintain individual channel-to-channel isolation parameters between installed CHARM components, eliminating signal loop crosstalk and grounding offsets. The physical bus structure directly accommodates the 4-20 mA HART loop protocol by distributing clean, unattenuated DC excitation lines to individual signal conditioning keys, allowing continuous pass-through of high-frequency digital telemetry from field instruments to upstream controllers.

Frequently Asked Questions

Q: How does the KL4104X1-BA1 respond to a primary electrical fault across its redundant power lines?

A: The carrier structure contains dual parallel +24 VDC bus rails. If the primary power circuit suffers a voltage failure, the parallel circuit maintains uninterrupted distribution across the active I/O slots without resetting the module power rails.

Q: Is hot-swapping of plugged CHARM units permitted on this base under live operating conditions?

A: Yes, the mechanical and electrical mating design of the carrier supports live, slot-level insertion and removal of component hardware, provided the environmental area is non-hazardous or the specific field wiring meets intrinsic safety guidelines during the swap procedure.

Field Installation Guidelines

• Mount the universal carrier securely on standard 35 mm DIN rails inside the Marshalling enclosure, verifying alignment with sequential carrier expansion hooks.
• Connect the redundant +24 VDC supply lines using separated wire bundles from distinct, decoupled industrial power supplies.
• Route all 4-20 mA field instrumentation lines through dedicated terminal channels, securing single-point shield terminations at the primary instrument earth bus bar.
• Verify the environmental enclosure meets the technical requirements for ATEX Zone 2 when operating the carrier in hazardous locations.
• Prevent physical blocking of the vertical ventilation clearances around the carrier base to remain within the continuous -40 to +70 deg C temperature parameters.