Product Details
Product Description
The TC-MUX021 (51404391-125) is a high-performance serial multiplexer interface designed for integration within Honeywell Experion PKS and legacy PLC architectures. This module acts as a specialized communication bridge, enabling the controller backplane to interface with serial-based field devices and peripheral subsystems. Engineered for industrial reliability, it manages data flow across multiple serial channels, ensuring deterministic timing and data integrity for critical process variables.
Technical Specifications
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Model Identification: TC-MUX021
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Associated Part Number: 51404391-125
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Primary Function: Serial Multiplexing / Device Interface
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Operating Voltage: 24 VDC (Nominal)
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Current Consumption: 1.0 to 1.3 Amps
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Input Current: 5.6 mA (typical signal load)
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Form Factor: Rack-mounted PLC I/O slot
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Physical Mass: 0.48 kg (approx. 1.06 lbs)
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Lifecycle Status: Discontinued by Manufacturer (Legacy Spares Support)
Operational Utility and Integration
The TC-MUX021 (51404391-125) is frequently deployed in process industries where legacy serial sensors, barcode readers, or specialized flow meters must communicate with a modern DCS or PLC backplane. Its robust 24VDC design and high-current tolerance (up to 1.3A) reflect its capability to handle complex multiplexing tasks across multiple ports without signal degradation. As a discontinued component, it remains a vital inventory item for maintaining the communication infrastructure of existing Honeywell control rooms.
Frequently Asked Questions
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What specific serial protocols does this module support?
The TC-MUX021 typically interfaces with standard RS-232, RS-422, or RS-485 signaling, depending on the software configuration and cable pinouts used at the terminal block.
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Can this module be hot-swapped in a powered rack?
While many Honeywell I/O modules support live insertion, it is best practice to verify that the serial communication loop is paused or that the redundant controller is active before swapping the TC-MUX021 (51404391-125) to avoid transient data errors.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
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