Overview
The Honeywell MC-TDIY22 Digital Input Module is engineered to capture and process digital signals from field devices such as switches, sensors, and contact closures. With 32 optically isolated input channels, it ensures accurate and noise-resistant signal acquisition across distributed control systems. This module is a key component in Honeywell’s Experion Process Knowledge System (PKS), supporting real-time monitoring and control in oil & gas, power generation, and chemical processing industries.
Moreover, the MC-TDIY22 features a rugged, conformally coated design that protects against moisture, dust, and corrosive atmospheres. In addition, its fast response time and low power consumption make it ideal for high-density installations where reliability and efficiency are critical. Therefore, it is widely used in mission-critical applications requiring precise digital input handling and long-term stability.
For instance, in a refinery’s emergency shutdown system, the MC-TDIY22 monitors limit switches and push buttons to ensure immediate response to hazardous conditions.
Technical Data
| Parameter | Specification |
|---|---|
| Model | MC-TDIY22 |
| Product Type | Digital Input Module |
| Operating Temperature | –40°C to +70°C |
| Dimensions (L × W × H) | 160 mm × 100 mm × 30 mm |
| Weight | 0.308 kg |
Typical Applications
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Process Automation Systems – Captures digital signals from field sensors and switches in chemical, oil & gas, and pharmaceutical plants.
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Safety Instrumented Systems (SIS) – Monitors emergency stop buttons and interlocks for real-time fault response.
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Power Generation Facilities – Interfaces with turbine and boiler control systems for status monitoring.
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Building Automation – Tracks digital inputs from access control, alarm, and HVAC systems.
In addition, the MC-TDIY22 is often deployed in distributed control architectures where high channel density and fast response are essential.
FAQ
Q1: What systems is the MC-TDIY22 compatible with?
A1: It integrates with Honeywell Experion PKS and TDC 3000 platforms.
Q2: How many inputs does it support?
A2: It provides 32 optically isolated digital input channels.
Q3: Is it suitable for harsh environments?
A3: Yes. It features conformal coating and operates across a wide temperature range for reliable use in industrial settings.
Q4: What is the typical response time?
A4: The module responds in less than 5 milliseconds per channel.
Q5: Can it be hot-swapped?
A5: No. It should be installed and serviced with power off to ensure safety and prevent equipment damage.
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