Product Overview

The Honeywell MLF-AH04A is a high-performance, hybrid analog interface module developed for the MasterLogic 50 PLC series. This compact unit is engineered to manage both data acquisition and actuator control by integrating two analog input channels and two analog output channels into a single hardware footprint. By supporting both voltage and current signal types, the MLF-AH04A provides an essential bridge between digital control logic and a wide variety of field instruments, including pressure transmitters, temperature sensors, and modulating control valves.

Designed to maximize cabinet efficiency, this dual-function module eliminates the need for separate input and output cards in smaller-scale automation tasks. The MLF-AH04A is built for the rigors of industrial environments, featuring advanced electrical isolation to prevent ground loops and robust noise suppression to maintain signal fidelity in areas with high electromagnetic interference (EMI).

Key Technical Characteristics

• Versatile Mixed I/O Configuration: Features 2 analog input channels and 2 analog output channels, allowing for simultaneous monitoring and control of process loops.

• Multi-Signal Compatibility: Configurable to handle standard industrial ranges, including 4-20mA current loops and 0-10V voltage signals, ensuring broad compatibility with diverse field equipment.

• High-Resolution Conversion: Delivers precise analog-to-digital (A/D) and digital-to-analog (D/A) conversion, ensuring that process variables are represented with high accuracy within the PLC logic.

• Galvanic Isolation: Incorporates internal electrical barriers to protect the MasterLogic 50 CPU from field-side voltage spikes and electrical noise.

• Compact MasterLogic 50 Form Factor: Optimized for space-constrained enclosures, providing a high density of analog functionality in a small modular profile.

• Simplified Maintenance: Equipped with clearly labeled terminal blocks and status indicators for rapid wiring verification and real-time channel diagnostics.

• Seamless CEE Integration: Fully compatible with the Honeywell MasterLogic architecture, providing deterministic data updates and easy configuration through the standard programming environment.

Technical Specifications

• Manufacturer: Honeywell

• Model Number: MLF-AH04A

• Product Series: MasterLogic 50

• Module Type: Mixed Analog Input/Output

• Input Channels: 2

• Output Channels: 2

• Signal Ranges: 4 to 20mA, 0 to 10V DC, 1 to 5V DC

• Isolation: Photo-coupler / Galvanic

• Mounting: Backplane mount

• Weight: 0.4 kg

• Dimensions: 7 x 14 x 14.5 cm

• HS Code: 8537101190

• Country of Origin: USA

Industrial Application Areas

• Localized Process Control: Managing temperature and pressure loops in small-scale skid-mounted equipment or pumping stations.

• HVAC Automation: Controlling variable frequency drives (VFDs) while monitoring air quality or humidity sensors.

• OEM Machinery: Providing a cost-effective analog interface for specialized manufacturing tools and assembly machines.

• Pilot Plant Operations: Delivering flexible I/O for research and development environments where signal types may frequently change.