Product Overview
The Honeywell 2MLF-AD16A is a high-performance 16-channel analog input module specifically engineered for the MasterLogic-200 series programmable logic controller (PLC) platform. This module serves as the critical interface between field sensors and the control system, converting continuous analog signals—such as temperature, pressure, flow, and level measurements—into precise digital values that the PLC can process for real-time monitoring and control . Designed for industrial automation environments where accuracy and reliability are paramount, the Honeywell 2MLF-AD16A enables seamless integration of analog instrumentation into digital control architectures.
The Honeywell 2MLF-AD16A supports both voltage (DC 1-5V, 0-5V, 0-10V, ±10V) and current (DC 4-20mA, 0-20mA) input types, offering exceptional flexibility for connecting to a wide variety of transmitters and sensors . Each of the 16 channels can be individually configured through software or external switches, allowing the Honeywell 2MLF-AD16A to adapt to different sensor ranges and application requirements without hardware modifications. The module employs a 16-bit analog-to-digital converter with a resolution of 1/16000, ensuring high-fidelity signal acquisition with an accuracy of ±0.2% under normal operating conditions . Whether deployed in water treatment facilities, pharmaceutical manufacturing, or heavy industrial process control, the Honeywell 2MLF-AD16A delivers the precision and reliability required for demanding automation tasks .
Technical Specifications
| Parameter Name | Value |
|---|---|
| Product Model | 2MLF-AD16A |
| Manufacturer | Honeywell |
| Product Type | Analog Input Module / A/D Conversion Module |
| Series | MasterLogic-200 |
| Input Channels | 16 (Single-ended) |
| Input Types | Voltage: 1-5V, 0-5V, 0-10V, ±10V; Current: 4-20mA, 0-20mA |
| Input Impedance | Voltage: ≥1 MΩ; Current: 250 Ω |
| Maximum Input | Voltage: ±15V; Current: ±30mA |
| Resolution | 16-bit (14-bit data representation) |
| Conversion Speed | 500 µs per channel |
| Accuracy | ±0.2% (25±5°C); ±0.3% (0-55°C) |
| Digital Output Format | Unsigned (0-16000), Signed (-8000-8000), Percent (0-10000) |
| Isolation Method | Photo-coupler isolation (Input terminal to PLC power) |
| Internal Power Consumption | DC 5V, 330mA |
| I/O Addressing | Fixed: 64 points; Variable: 16 points |
| Operating Temperature | 0°C to 55°C |
| Storage Temperature | -25°C to 70°C |
| Dimensions | 2.3 × 11.9 × 8.5 cm |
| Weight | Approximately 0.115 kg |
| Mounting | DIN Rail |
| Connection | 32-point terminal block |
Main Features and Advantages
High-Density 16-Channel Analog Input: The Honeywell 2MLF-AD16A provides 16 configurable analog input channels in a compact form factor, significantly reducing the space required for analog signal acquisition in control cabinets. This high-density design allows the Honeywell 2MLF-AD16A to support up to 16 field instruments—such as temperature transmitters, pressure sensors, and flow meters—within a single module, minimizing I/O rack occupancy and simplifying system architecture .
Flexible Input Configuration for Diverse Applications: The Honeywell 2MLF-AD16A supports both voltage and current input ranges, with each channel independently configurable to match the specific requirements of connected field devices . This flexibility makes the Honeywell 2MLF-AD16A suitable for integration with a wide array of sensors and transmitters, from 4-20mA loop-powered instruments to voltage-output devices. The module’s high input impedance for voltage signals (≥1 MΩ) ensures minimal loading on the sensor, preserving signal integrity .
High-Speed and High-Accuracy Signal Conversion: With a maximum conversion speed of 500 µs per channel and an accuracy of ±0.2% at 25°C, the Honeywell 2MLF-AD16A delivers rapid and precise analog-to-digital conversion essential for real-time process control . The 16-bit resolution enables the Honeywell 2MLF-AD16A to detect minute signal variations, providing the granularity required for sensitive applications such as temperature control and flow monitoring. This combination of speed and accuracy ensures that the control system receives timely, reliable data for optimal decision-making .
Robust Isolation and Noise Immunity: The Honeywell 2MLF-AD16A incorporates photo-coupler isolation between the input terminals and the PLC power supply, providing protection against electrical noise and ground loops common in industrial environments . This isolation enhances the Honeywell 2MLF-AD16A‘s reliability in high-interference settings such as motor control centers and heavy machinery installations. While the channels are not isolated from each other, the overall design significantly reduces the risk of signal corruption from electromagnetic interference .
Flexible Data Format and Addressing: The Honeywell 2MLF-AD16A supports multiple digital output formats—including unsigned, signed, and percentage representations—allowing seamless integration with various PLC programming styles and applications . The module offers both fixed (64-point) and variable (16-point) I/O addressing options, providing flexibility for system designers to optimize memory allocation based on application requirements .
