MC-TDOY23 51204166-175 Honeywell Digital Output Board

Product Description

The MC-TDOY23 (Part Number: 51204166-175) is a 16-channel Digital Output (DO) Terminal Board engineered for Honeywell Experion PKS, TDC 3000, and High-Performance Process Manager (HPM) systems. This board provides a reliable field termination interface, routing discrete on/off signals from the I/O processor to actuators, solenoid valves, relays, and motor starters.

Designed for 24V DC operation, the MC-TDOY23 ensures signal integrity and electrical isolation while offering a compact, organized wiring platform. Built to withstand harsh industrial environments, it incorporates high-quality circuitry, channel-level protection, and onboard diagnostic features to simplify maintenance and troubleshooting.

Technical Specifications

Application Scenarios

• Driving 24V DC solenoid valves in automated process loops

• Activating interposing relays for higher-voltage motor circuits

• Providing status signals to alarm panels and supervisory systems

• Replacing legacy digital output boards during system maintenance or DCS upgrades

Frequently Asked Questions

Is the MC-TDOY23 compatible with redundant I/O configurations?
Yes. It supports Honeywell’s redundant I/O architectures, allowing dual processor cabling to a single field termination point for high availability.

Can this board switch 120V AC?
No. The MC-TDOY23 is rated for 24V DC outputs only. AC switching requires an interposing relay or a dedicated AC-rated output module.