Description

The 51403519-160 K4LCN-16 is a high-performance, 16-channel Low Level Analog Input (LLAI) module designed for Honeywell’s flagship Experion PKS C300 controller family. This critical I/O component serves as the vital link between the process environment and the control system, specializing in accurately measuring very low voltage signals from sensitive field transmitters, typically in the millivolt range. As part of Honeywell’s extensive and reliable I/O suite, the K4LCN-16 module is engineered for mission-critical applications where precision, signal integrity, and system availability are non-negotiable. It seamlessly integrates into the Controller Area Network (CN) of a C300 system, providing the processing power of the controller with high-fidelity data essential for advanced regulatory control, complex calculations, and process optimization. The 51403519-160 K4LCN-16 embodies Honeywell’s commitment to robustness, offering exceptional noise immunity and stability in electrically harsh industrial environments, making it a cornerstone for building a resilient and accurate automation infrastructure.

51403519-160 K4LCN-16 HONEYWELL

Technical Specifications

Parameter Name	Parameter Value
Product Model	51403519-160 K4LCN-16
Manufacturer	Honeywell
Product Type	Low Level Analog Input Module
Number of Channels	16 (single-ended or differential)
Input Signal Range	±20 mV, ±50 mV, ±100 mV, ±500 mV, ±1 V, ±5 V (software selectable per channel)
Input Impedance	>20 MΩ
A/D Resolution	24-bit
Accuracy	±0.05% of calibrated span
Update Rate	100 ms per channel (1.6 seconds for all 16 channels)
Common Mode Rejection	>120 dB @ 50/60 Hz
Normal Mode Rejection	>80 dB @ 50/60 Hz
Communication Interface	Controller Area Network (CN) to C300 Controller
Operating Temperature	-40°C to 70°C (-40°F to 158°F)
Power Consumption	1.8 W (typical)

Main Features and Advantages

The 51403519-160 K4LCN-16 module offers a suite of advanced features that ensure superior performance and reliability. Its most significant advantage is its exceptional measurement accuracy and high 24-bit resolution, which is paramount for distinguishing minute changes in process variables, crucial for applications like mass flow metering or high-precision analytical instrumentation. Each channel is individually software-configurable for different voltage ranges and wiring modes (single-ended or differential), providing immense flexibility to accommodate various sensor types within a single module. The module’s outstanding Common Mode and Normal Mode Rejection ratios effectively eliminate electrical noise, guaranteeing signal integrity even when installed in areas with heavy motor or RF interference.

Built-in diagnostics are a key strength of the K4LCN-16, continuously monitoring for field wiring faults such as open circuits, shorts, and out-of-range signals. This proactive health monitoring allows for predictive maintenance, reducing unexpected downtime. Furthermore, the module supports true hot-swap capability under power, meaning it can be replaced without requiring a shutdown of the entire controller or its other I/O modules, a critical feature for maintaining high availability in continuous process plants. The robust design of the 51403519-160 K4LCN-16 ensures long-term stability and a minimized need for recalibration, reducing life-cycle costs.

Application Field

The 51403519-160 K4LCN-16 finds its primary application in industries where precise measurement of low-level analog signals is critical for process control, safety, and efficiency. In the Oil & Gas sector, it is indispensable for connecting to turbine flow meters, strain gauges on storage tanks, and analytical equipment like gas chromatographs that output low-voltage signals. Power generation facilities utilize the K4LCN-16 for critical measurements on boiler systems, including thermocouple reference junctions and vibration monitoring systems. In the chemical and pharmaceutical industries, the module is used for batch processes requiring exact measurements from precision pressure transmitters and load cells for recipe formulation.

It is also extensively deployed in water and wastewater treatment plants for monitoring analytical parameters such as pH and conductivity, which produce millivolt signals. The high channel count of the 51403519-160 K4LCN-16 makes it ideal for applications with a high density of measurement points, consolidating wiring and reducing cabinet space compared to using multiple lower-channel-count modules. Its rugged design makes it suitable for installation in remote and unmanned facilities where reliability is paramount.

51403519-160 K4LCN-16 HONEYWELL

Related Products

K4LCN-8: An 8-channel low-level analog input module, offering the same high precision in a lower-density form factor for smaller applications.

K4TCN-16: A 16-channel thermocouple input module, designed specifically for measuring temperature directly from various thermocouple types.

K4RTD-16: A 16-channel RTD input module, optimized for connecting 2, 3, or 4-wire Resistance Temperature Detectors (RTDs).

51403516-175: The typical part number for a C300 Process Controller, the central brain that the K4LCN-16 module serves.

51404693-001: A common power supply module (PS-F) for the Experion C300 rack, providing stable power to the controller and all I/O modules.

51171230-100: A typical Experion C Series I/O Mounting Unit (rack) used to house the controller and I/O modules like the K4LCN-16.