Description
Honeywell K4LCN-16 / 51403519-160
Technical Specifications
- Part Number: 51403519-160, Model: K4LCN-16
- Memory Capacity: 16MB
- Processor Core: Motorola 68040
- Communication Interface: Redundant LCN coaxial bus
- Power Supply: 5VDC internal rack power supply
- Working Ambient Temperature: 0°C to +60°C
- Storage Temperature: -40°C to +85°C
- Relative Humidity: 5% to 90% RH non-condensing
- Isolation Rating: 1500VAC signal isolation
- Mounting Method: Standard plug-in slot inside TDC3000 rack
- Certification: TÜV, UL, CE
Functional Features It manages LCN bus communication scheduling and data forwarding between all LCN nodes. It stores system configuration database, control strategy and node parameter information. It executes local data calculation and buffer storage for real-time process data. It supports redundant LCN bus communication and automatic switchover when one bus fails. It continuously executes self-diagnosis of memory, processor and bus circuit. It sends fault diagnostic code and alarm message to HM operator station. It supports hot swap replacement with system power remaining online. It maintains system time synchronization for all LCN nodes.
Application Scenarios TDC3000 DCS LCN rack core processor spare replacement Petrochemical plant TDC3000 control cabinet maintenance Oil refinery legacy distributed control system LCN node upgrade Natural gas processing plant TDC3000 system spare inventory Chemical reactor old DCS system fault repair
Performance Parameters
- LCN Bus Communication Speed: 5Mbps
- Mean Time Between Failures: 810000 hours
- Insulation Resistance: Greater than 1000 MΩ
- Bus Switchover Time: Less than 10ms during single bus failure
- Memory Data Retention Time: Greater than 72 hours with backup battery
Material Composition Thick multilayer FR4 flame retardant PCB Motorola 68040 processor chip Flash memory and SDRAM memory chips Coaxial bus signal isolation transformer TVS surge suppression components Gold plated edge connector contacts Metal front panel with handle and status LED Backup lithium battery holder Steel fixing bracket
Structural Features Standard horizontal plug-in board form factor for TDC3000 rack. Front metal panel carries power, fault and bus communication LED indicators and extraction handle. Rear gold plated edge connector mates with rack backplane power and signal bus. Internal PCB layout separates high speed processor logic zone and coaxial bus signal zone. Built-in lithium battery provides memory data backup during power outage. Anti-key notch prevents reverse insertion into rack slot.
Working Principle After power on, the module loads system configuration and initializes LCN bus communication. It receives real-time process data and control command from other LCN nodes. The processor executes data sorting, buffer storage and forwarding according to LCN communication protocol. It synchronizes system clock with all connected nodes. When LCN bus fault or memory error occurs, the diagnostic circuit triggers fault flag and sends alarm to operator station. Backup battery retains configuration data when rack power is interrupted.
Installation Requirements Power off the target rack slot before module replacement. Wear anti-static wrist strap and extract the old module from rack slot. Insert K4LCN-16 module into vacant slot and lock the front handle. Restore rack power and wait for module self-test completion. Download matching TDC3000 system configuration if required. Verify LCN bus communication status and node online status on HM operator station.
Usage Notes This module belongs to legacy series, production phase out. Static protection operation is mandatory during handling and replacement. Do not scratch gold plated contact surface of edge connector. Keep backup battery status checked regularly to avoid configuration data loss. Do not modify PCB trace or replace non-specified components on the board.
