Honeywell TK-MUX021 51404391-375 Interface Module

Honeywell TK-MUX021 51404391-375 Interface Module

The TK-MUX021 (part number 51404391-375) is a coated 32-channel serial input multiplexer module engineered by Honeywell for process automation environments. Functioning within TDC 3000 and Experion PKS system architectures, it collects multi-channel serial field inputs and aggregates them for high-speed transmission to primary control processors.

Serial Multiplexing and Channel Architecture

The module incorporates 32 serial input channels designed to interface field instruments and subsystem serial links. Operating via an RS-485 serial communication interface, the unit enables multi-drop networking and stable noise-tolerant data acquisition across distributed plant equipment.

Electrical Specifications and Environmental Protection

Powered by a standard 24 VDC input supply, the interface module converts power to provide a regulated 5 VDC output for internal logic operations. Built to withstand aggressive industrial environments, the module features factory conformal coating to guard electronic components against moisture and airborne pollutants across an operating temperature range of -40 deg C to +85 deg C. Its compact physical footprint measures approximately 100 mm x 50 mm x 20 mm.

Frequently Asked Questions

Q: What is the main function of the Honeywell TK-MUX021 module? A: It operates as a 32-channel serial input multiplexer that aggregates multiple serial field input signals for transmission to TDC 3000 or Experion PKS control systems.

Q: What communication protocol/interface does the module use? A: The module utilizes an RS-485 serial interface for serial field data communication.

Q: What does the "TK-" prefix indicate in this part number? A: In Honeywell control hardware nomenclature, the "TK-" prefix designates a module built with protective conformal coating for harsh industrial environments.