Honeywell MLF-DC04A Analog Output Module 4-Channel Current

Product Overview

When analog output precision is critical in your process, the Honeywell MLF-DC04A delivers reliable 4-channel current output. This module is designed for maintenance engineers who value straightforward installation and consistent performance. With a fixed 64-point I/O assignment and photo-coupler insulation, it integrates smoothly into existing control systems.

Technical Specifications

The MLF-DC04A provides four analog output channels supporting 4-20 mA and 0-20 mA current ranges. Key parameters include a resolution of 5 μA (1/4000), maximum conversion speed of 1.0 ms per channel, and accuracy within ±0.5% or less. The absolute maximum output is ±25 mA, and load resistance must be ≤510 Ω. Digital data formats include unsigned values (0-4000), signed values (-2000 to 2000), precise values (400-2000 for 4-20 mA, 0-2000 for 0-20 mA), and percentile values (0-1000). Data format is set via user program or I/O parameters. The module uses a 11-point terminal block and consumes 110 mA at 5 VDC and 120 mA at 24 VDC. Weight is 124 g.

Industry Applications

In process control environments such as chemical dosing or water treatment, the MLF-DC04A provides stable current output for valve positioning or pump speed control. Its 4-channel design allows multiple loops from a single module, reducing wiring complexity. For maintenance teams, the fixed I/O assignment simplifies troubleshooting and reduces configuration errors.

Installation & Setup Guidance

Mount the MLF-DC04A on a standard DIN rail within the PLC rack. Connect the 11-point terminal block per the wiring diagram, ensuring load resistance does not exceed 510 Ω. Set the digital data format via the user program or I/O parameters before commissioning. Verify power supply connections: 5 VDC at 110 mA and 24 VDC at 120 mA. No insulation exists between channels, so plan wiring accordingly.

Maintenance & Reliability

Routine inspection of terminal block connections and power supply voltages helps maintain accuracy. The photo-coupler insulation protects the PLC side from input-side noise, enhancing long-term reliability. Because the module uses no moving parts, periodic cleaning of the enclosure and checking for loose wiring are the primary maintenance tasks. Follow manufacturer guidelines for any deeper diagnostics.

Compatibility & Integration

The MLF-DC04A integrates with Honeywell PLC systems that support analog output modules with fixed 64-point I/O assignment. It occupies 64 I/O points and communicates via the backplane bus. Verify compatibility with your specific controller model before ordering. BluePLC Industrial can assist with integration questions.

Selection Guide & Purchasing Advice

Before purchasing the Honeywell MLF-DC04A, confirm your system's power supply capacity (5 VDC at 110 mA, 24 VDC at 120 mA) and available I/O slots. Ensure load resistance for each channel is ≤510 Ω. BluePLC Industrial offers this module with fast shipping and technical support. Please verify current lifecycle status and availability with BluePLC Industrial before ordering.