MC-TDOY23 51204166-175 Honeywell Relay Output Module
Manufacturer: HONEYWELL
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Part Number: MC-TDOY23 51204166-175
Condition：New with Original Package
Product Type: Digital Output Modules
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Country of Origin: Sweden
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Honeywell MC-TDOY23 Digital Output Relay Module
The Honeywell MC-TDOY23, also cataloged as the MC-TDOY23 51204166-175 Digital Output Relay Module, operates as a dedicated hardware component for high-voltage circuit execution within Experion PKS, PlantScape, and TPN platforms. The hardware drives discrete field loads via 16 independent electromechanical relays, acting as the physical interface for power circuits routed through standard Field Terminal Assembly (FTA) architectures.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | MC-TDOY23 / 51204166-175 |
| Brand | Honeywell |
| Origin | USA / China (varies by batch) |
| Weight | Standard Size B FTA Mass Profile |
| Dimensions | Size B FTA, 12 inches |
| Operating Temp | 0 deg C to +60 deg C |
| Power Consumption | Determined by active relay coil count (24 VDC bus) |
| Output Channels | 16 independent relay outputs |
| Maximum Voltage Range | 240 VAC / 125 VDC |
| Relay Classification | Electromechanical contact relays |
| Compatible IOP Hardware | MC-PDOY22 only |
| Environmental Protection | Conformal coated assembly, CE compliant |
| Isolation Configuration | Channel-to-system galvanic isolation |
| Termination Type | Compression-type terminals |
4-20 mA HART Loop Protocol and Channel Isolation
The electrical design provides channel-to-system galvanic isolation to suppress inductive kickback voltages from migrating back into the core DCS computing planes. While this digital module manages high-current discrete switching rather than 4-20 mA HART loop protocol lines directly, its isolated physical boundaries actively shield adjacent multi-channel analog assemblies. By blocking common-mode voltages and preventing leakage paths on the shared backplane bus, the module prevents electrical transients from inducing thermal offsets or noise, thereby protecting the cold junction compensation (CJC) accuracy of neighboring thermocouple and RTD modules.
Frequently Asked Questions
Q: What specific high-level automation hardware must pair with this module for redundant operation?
A: Redundant configurations require direct deployment alongside the Honeywell MC-PDOY22 Input Output Processor (IOP) card, which manages the dual communication paths to the active and backup controller racks.
Q: How does the module handle environmental contaminants and moisture inside field panels?
A: The circuit board features a full layer of factory-applied conformal coating, which provides protection against moisture, conductive dust particles, and minor airborne chemical exposure in typical industrial control panels.
Q: Can this module mix AC and DC loads across its 16 output channels?
A: You can switch distinct voltage types up to 240 VAC or 125 VDC, but technicians must review local electrical code rules regarding segregation parameters for different voltage classes within a single compression-type terminal block.
Field Installation Guidelines
Mount the Size B 12-inch FTA assembly securely on the designated cabinet vertical or horizontal grid rails, keeping the local ambient temperature within the 0 deg C to +60 deg C functional window. Disconnect all primary AC and DC power links before connecting field wiring to the compression-type terminal blocks. Strip the field cables cleanly to expose the copper conductors, secure them into the terminal clamps, and ensure that no loose wire strands bridge the gap to adjacent circuits. Route high-voltage AC or DC power load wiring through dedicated high-power wire ducts, keeping them isolated from low-voltage analog instrument lines to avoid inductive noise coupling across the distributed control system network.