Honeywell 51402497-200 Universal Workstation Keyboard Assembly

The Honeywell 51402497-200, also cataloged as the 51402497-200 Operator Entry Panel (OEP), serves as the primary 51402497-200 Enhanced Operator Keyboard assembly utilized to execute real-time interface inputs and manual overrides across Honeywell TDC 3000 Distributed Control System (DCS) platforms.

Suffix Breakdown & Model Matrix

The 51402497-200 represents a complete integrated console keyboard assembly composed of specific structural internal sub-components outlined below:

• 51401560-100 Membrane Layer: The mechanical hardware boundary utilizing a standard alphanumeric QWERTY interface layout engineered to resist corrosive environmental atmospheric ingress.
• 51401952-200 Control Electronics: The inner digital matrix board dedicated to polling key activations, converting physical actions into system interrupt flags, and sustaining communication links.
• 51196650 Alarm Module: An internal electronic beeper component mounted within the chassis architecture to deliver local audible feedback alerts directly corresponding to critical alarm system activations.

Hardware Specifications

Honeywell Process Control and DCS Optimization

• 4-20 mA HART Loop Protocol and Display Interfacing: The operator panel establishes deterministic input signal mapping to interface directly with regulatory control displays. When operators enter setpoint changes or parameter modifications via the interface matrix, the electronic board packages the data packets for immediate transmission onto the control network, ensuring manual changes sync with local field instrument configurations without delay.
• Channel-to-Channel Isolation and Bus Safety: The internal control electronics feature physical ground-loop separation arrays to protect the core processing unit. Electrical separation structures prevent stray voltage spikes or grounding discrepancies originating in adjacent Universal Workstation (UWS) monitor racks from bleeding into the logic processing channels or causing communication bus frame errors.