The Honeywell 51305072-400, also cataloged as the 51305072-400 LCN Input/Output Board, operates as a dedicated hardware component for network node addressing and communication interface routing within TDC 3000 Local Control Network (LCN) architectures. The chassis-mounted assembly establishes direct physical and data connections natively at the hardware tier to link 5-slot and 10-slot chassis backplanes straight to redundant LCN processing loops.
Hardware Specifications
Parameter
Specification
Model
51305072-400
Brand
Honeywell
Series
TDC 3000 / Local Control Network (LCN)
Origin
United States
Weight
0.31 lbs (0.14 kg) net physical component mass
Chassis Compatibility
Dedicated 5-slot and 10-slot chassis assemblies
Addressing Method
Integrated onboard physical slide switch matrix
Network Interface
Redundant LCN Trunk A and Trunk B cable connection paths
Power Consumption
Regulated logic supply via shared chassis backplane tracks
Product Type
Distributed I/O Boards
Process Control & DCS Instrumentation Interface
Channel-to-Channel Isolation and Dual Trunk Management The interface board incorporates dedicated electrical boundaries designed to enforce channel-to-channel isolation parameters between the parallel LCN Trunk A and Trunk B coaxial cables. This independent circuit topology ensures that a physical cable short-circuit, ground fault, or inductive surge on one network trunk cannot disrupt the data transmission registers or drop the communication link of the active redundant path.
4-20 mA HART Loop Protocol System Segmentation The assembly manages upper-tier network data translation matrices completely isolated from field-side 4-20 mA HART loop protocol signaling drops. This structural zoning ensures that local node addressing operations and high-frequency network token-passing routines do not inject carrier noise back into active analog control lines or interrupt the core DCS processing cycle.
