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Description

The Honeywell MC-TDID12 (51304441-175) is a high-density 32-point digital input module designed for use within the Honeywell Distributed Control System (DCS) environment. This module provides reliable signal acquisition for 24Vdc field inputs, serving as a critical interface between field devices and the control system logic.

Features

  • 32 discrete input channels for high-density I/O configurations.
  • Compatible with 24Vdc field signals.
  • Galvanic isolation rated at 1500 Vac rms or 1500 Vdc to ensure signal integrity and system protection.
  • Robust design suitable for industrial process control environments.

Technical Specifications

Model MC-TDID12 (51304441-175)
Input Channels 32
Input Voltage Range 20-30 Vdc
Pick-up Voltage 20 Vdc minimum
Drop-out Voltage 10 Vdc maximum
Sense Current 4.5 mA minimum
Input Frequency 15 Hz
Galvanic Isolation 1500 Vac rms or 1500 Vdc
Operating Temperature -20 degC to +60 degC
Storage Temperature -40 degC to +85 degC
Relative Humidity 5-95% non-condensing

Installation Guidelines

  • Ensure the control system power is disconnected before installing or removing the module from the rack.
  • Verify that the module is properly seated in the designated slot to ensure reliable backplane communication.
  • Maintain proper cable routing to minimize EMI/RFI interference from high-voltage power lines.
  • Ensure the cabinet environment remains within the specified temperature and humidity ranges to prevent premature component failure.
  • Use appropriate ESD protection measures when handling the module to prevent damage to internal circuitry.

FAQ

What is the primary function of the MC-TDID12 module?

The MC-TDID12 is a 32-point digital input module used in Honeywell DCS systems to monitor 24Vdc field signals and convert them into digital data for processing by the controller.

Is this module galvanically isolated?

Yes, the module features galvanic isolation rated at 1500 Vac rms or 1500 Vdc, which helps protect the control system from field-side electrical surges and noise.

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