The Honeywell 51402755-100, also cataloged as the K4LCN-4 Processor Card, operates as a dedicated hardware component for high-level logic execution, control processing, and data routing within Local Control Network (LCN) platforms.
Hardware Specifications
Parameter
Specification
Model
51402755-100
Alternate ID
K4LCN-4
Brand
Honeywell
Series
TotalPlant Solution (TPS) / TDC 3000 Series
Origin
United States (US)
Weight
2.14 lbs (0.97 kg)
Dimensions
Standard LCN card file slot assembly
Functional Class
CPU / Control Board Processor Card
Power Architecture
Driven via standard LCN backplane power distribution rails
Honeywell Process Control and DCS Optimization
Backplane Bus Communication Velocity Licences: The K4LCN-4 processing matrix synchronizes directly with the high-speed LCN parallel backplane bus. It manages deterministic token-passing communication cycles across the network nodes, verifying frame synchronization and routing real-time process variables within sub-millisecond execution loops.
Channel-to-Channel Isolation Matrix: To prevent localized bus noise or grounding shifts from disrupting main processing registers, the card features physical galvanic and optical isolation zones. These boundaries confine electrical common-mode spikes to the edge termination traces, protecting the inner 32-bit computing matrix from data corruption or parity exceptions.
Frequently Asked Questions
Q: Does the 51402755-100 processor card support live-insertion or hot-swapping procedures within an active LCN card file?
A: No. The backplane contact fingers on this board lack specialized dual-stage current-limiting gates. Inserting or extracting the card while the sub-rack backplane is energized can trigger power dips, data bus frame drops, or permanent damage to the solid-state chips on adjacent network nodes.
Q: How does the K4LCN-4 module handle a system memory parity error during runtime?
A: The processor card runs continuous background cyclic redundancy checks (CRC) and memory checksums. If an unrecoverable memory parity fault manifests inside the execution register, the board asserts a hardware failure flag, drops its output relays to a fail-safe state, and initiates a failover sequence to transfer command to the backup partner processor.
