Honeywell MC-TDID12 51304441-175 Digital Input Module

Product Overview

The Honeywell MC-TDID12 51304441-175 provides high-density digital input processing for discrete field signals. This module handles 32 input channels with 24 VDC nominal operating voltage. It reads signals from switches, push buttons, and proximity sensors reliably. The unit fits directly into Honeywell Series C and TDC 3000 chassis systems.

Technical Specifications

Parameter	Specification
Model Number	MC-TDID12 51304441-175
Product Type	Digital Input Module
Number of Inputs	32 discrete channels
Nominal Voltage	24 VDC
Input Voltage Range	20–30 VDC
Input Current	5.5 mA per channel typical
Isolation Type	Optical isolation
Isolation Voltage	1500 VAC for 1 minute
Input Filter	3 ms programmable
Power Dissipation	4.8 W typical
Operating Temperature	0°C to 60°C
Storage Temperature	–40°C to 85°C
Humidity Range	5% to 95% non-condensing

Physical Dimensions and Mounting

This module measures 125 mm in height, 45 mm in width, and 160 mm in depth. The unit weighs approximately 0.40 kg. It mounts directly onto a standard DIN rail within the Series C cabinet. The front face includes 32 LED indicators that display each channel’s status. These LEDs help operators identify active inputs quickly.

Electrical Interface and Field Wiring

A 50-pin D-sub connector serves as the primary interface for all field wiring. The module accepts both sinking and sourcing input configurations. Each channel features built-in surge suppression for transient voltage protection. The optical isolation barrier withstands 1500 VAC during dielectric testing. Field devices like limit switches, push buttons, and proximity sensors connect directly to these terminals.

Performance and Response Characteristics

The MC-TDID12 51304441-175 scans all 32 inputs within a single control cycle. It includes programmable input filters up to 3 milliseconds for noise rejection. The module detects both open-wire and short-circuit conditions through diagnostics. It reports these faults to the main controller immediately. Furthermore, the firmware performs continuous self-checks for operational integrity. These features ensure reliable data acquisition in critical process applications.

Installation and System Compatibility

You can install this module in any available I/O slot within the Series C chassis. The backplane handles address assignment and power distribution automatically. Always configure the input filter timing using the system software. For high-reliability applications, implement redundant modules for failover protection. Verify the field wiring polarity matches the termination diagram provided.

Environmental Compliance and Certification

This module carries CE marking and UL recognition for global deployment. It also complies with RoHS and WEEE environmental directives. The conformal coating protects the PCB against moisture and dust ingress. This coating significantly extends the product’s operational lifespan.