Honeywell 2MLI-D22A-CC Digital Input Module

Product Introduction

The Honeywell 2MLI-D22A-CC is a robust Digital Input (DI) module designed for use in Honeywell’s TDC 3000 Distributed Control System (DCS) and compatible automation platforms. This module serves as a critical interface component, enabling the system to monitor discrete signals from field devices such as switches, relays, and sensors.

This module supports 16 discrete input channels, allowing real-time digital signal acquisition and processing for monitoring various process conditions. It is engineered for industrial environments, providing high reliability and signal integrity even under electrical noise and harsh operating conditions.

The 2MLI-D22A-CC’s modular design fits seamlessly into Honeywell’s system racks and supports hot-swapping for easy maintenance and minimal downtime. It plays a vital role in converting on/off field signals into system logic, enabling process automation and safety interlocks.

Product Specifications

Applications

The 2MLI-D22A-CC Digital Input Module finds extensive use in various industrial automation and control settings:

• Distributed Control Systems (DCS): Key input module for Honeywell TDC 3000 and related systems, monitoring discrete status signals from field devices.

• Oil & Gas: Monitors alarms, safety interlocks, valve positions, and other critical on/off signals within upstream, midstream, and downstream processes.

• Chemical Processing: Tracks equipment statuses such as pumps, compressors, and emergency shutdown devices for process safety.

• Power Generation: Interfaces with protection relays, breaker status, and control switches in power plants.

• Water and Wastewater Treatment: Monitors pump statuses, valve positions, and tank level switches.

• Manufacturing Automation: Enables machine status monitoring and discrete event logging.

Advantages and Key Features

• High Channel Density: Supports 16 digital input points per module, optimizing rack space and system scalability.

• Optical Isolation: Each input channel is optically isolated, protecting the system from electrical noise and transient surges.

• Flexible Input Types: Compatible with dry contacts or voltage signals up to 30 V DC, allowing versatile field wiring.

• Fast Response Time: Signal processing under 10 ms ensures timely detection of field status changes.

• Modular and Hot-Swappable: Easily inserted or removed from system racks without powering down the system.

• Robust Industrial Design: Engineered to operate reliably within harsh temperature, humidity, and vibration conditions.

• Diagnostic Capabilities: Supports system-level diagnostics for fault detection and troubleshooting.

• Standards Compliance: Certified by CE and UL, ensuring safety and reliability.

Frequently Asked Questions (FAQ)

1. What type of signals does the 2MLI-D22A-CC accept?
   It accepts dry contacts, voltage-free contacts, or 24 V DC input signals.

2. How many input channels does this module support?
   The module supports 16 discrete input channels.

3. Is the module hot-swappable?
   Yes, the module can be replaced or installed without shutting down the system.

4. What is the typical response time for digital inputs?
   The response time is less than 10 milliseconds.

5. Does the module provide electrical isolation for input channels?
   Yes, each input channel is optically isolated to protect against noise.

6. What are the environmental operating conditions?
   It operates between 0°C to 60°C with relative humidity up to 95% (non-condensing).

7. What certifications does the 2MLI-D22A-CC hold?
   It is CE certified and UL recognized.

8. What is the input voltage range for this module?
   The input voltage range is 0 to 30 V DC.

9. Can this module be used outside the TDC 3000 system?
   It is specifically designed for Honeywell TDC 3000 and compatible systems but may be used in similar architectures.

10. What kind of diagnostics does the module support?
    It supports system diagnostics for channel status and fault detection.

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Frequently Asked Questions (FAQ)

1. What type of signals does the 2MLI-D22A-CC accept?
   It accepts dry contacts, voltage-free contacts, or 24 V DC input signals.

2. How many input channels does this module support?
   The module supports 16 discrete input channels.

3. Is the module hot-swappable?
   Yes, the module can be replaced or installed without shutting down the system.

4. What is the typical response time for digital inputs?
   The response time is less than 10 milliseconds.

5. Does the module provide electrical isolation for input channels?
   Yes, each input channel is optically isolated to protect against noise.

6. What are the environmental operating conditions?
   It operates between 0°C to 60°C with relative humidity up to 95% (non-condensing).

7. What certifications does the 2MLI-D22A-CC hold?
   It is CE certified and UL recognized.

8. What is the input voltage range for this module?
   The input voltage range is 0 to 30 V DC.

9. Can this module be used outside the TDC 3000 system?
   It is specifically designed for Honeywell TDC 3000 and compatible systems but may be used in similar architectures.

10. What kind of diagnostics does the module support?
    It supports system diagnostics for channel status and fault detection.

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Popular Honeywell Input and Output Modules

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