Honeywell MC-TDOD14 51309153-175 Digital Output FTA

Product Overview

The Honeywell MC-TDOD14 51309153-175 serves as a field termination assembly for digital output signals. This FTA board connects the main controller to actuators, solenoids, and indicating lamps in the field. It provides a structured wiring interface between the I/O module and plant devices. The unit mounts inside Honeywell Series C cabinets for organized signal distribution.

Technical Specifications

Parameter	Specification
Model Number	MC-TDOD14 51309153-175
Product Type	Digital Output Field Termination Assembly
Number of Channels	16 discrete output terminations
Nominal Voltage	24 VDC
Maximum Load Current	0.5 A per channel
Total Current Capacity	8 A continuous
Fuse Protection	16 individual fuses, 1.0 A each
Terminal Type	Screw-clamp barrier strip
Wire Gauge	14–22 AWG
Operating Temperature	0°C to 60°C
Storage Temperature	–40°C to 85°C
Humidity	5% to 95% RH non-condensing

Physical Dimensions and Construction

This board measures 215 mm in width, 165 mm in depth, and 45 mm in height. The assembly weighs approximately 0.58 kg. It features a rigid PCB construction with clearly labeled termination points. The board mounts vertically on DIN rails or backplates inside the cabinet. Each channel includes a dedicated LED indicator for output status monitoring.

Electrical Interface and Connectivity

A 50-pin flat ribbon cable connector links this FTA to the corresponding output module. The board then distributes these signals to 16 individual screw-clamp terminals. Each termination point accommodates solid or stranded copper wire from 14 to 22 AWG. The barrier strip design prevents accidental short circuits between adjacent connections. This board also includes a common power bus for supplying field devices.

Protection and Diagnostic Features

Each output channel incorporates a fast-acting 1.0 A fuse for overcurrent protection. These fuses clear rapidly during overload conditions to safeguard downstream actuators. The fuse status indicators light up immediately when a fuse blows. This feature enables quick fault identification and reduces troubleshooting time. The board also includes built-in transient suppression diodes. These diodes protect the output circuits from inductive load kickback.

Installation and System Compatibility

You can install this FTA in any Honeywell Series C or TDC 3000 cabinet assembly. The mounting holes align with standard rail profiles for rapid mechanical installation. The ribbon cable connection uses a keyed header to prevent incorrect orientation. Always route field wiring away from high-voltage cables to minimize noise pickup. For applications requiring high reliability, consider using redundant output wiring configurations.

Environmental Durability

This board meets RoHS compliance standards for restricted substance content. It also carries UL 508 and CSA C22.2 approvals for industrial control equipment. The conformal coating on the PCB protects against humidity and dust ingress. This coating significantly enhances the board’s longevity in demanding plant floors.