Honeywell 2MLR-DC42 Power Supply Module | 24VDC Input, 5VDC Output

Technical Specifications Breakdown

Key parameters for the 2MLR-DC42 are listed below for quick reference:

Industry Applications

Reliable Power for PLC and DCS Systems

The 2MLR-DC42 provides stable 5VDC power, essential for PLC and DCS controllers. Its 24VDC input range (19.2~28.8 VDC) accommodates common industrial DC buses. The built-in fuse protects against overcurrent, reducing the risk of damage to downstream electronics.

High-Speed Automation Lines

With a response time of 10 ㎳ (off→on) and 12 ㎳ (on→off), the RUN contact enables fast status signaling. This is critical for high-speed packaging or assembly lines where immediate fault detection prevents product damage.

Harsh Industrial Environments

The module delivers 37.5W output power at 55℃, ensuring performance in warm enclosures. Its compact dimensions (55x95x110 mm) and 417g weight allow easy mounting in space-constrained cabinets.

Installation & Setup Guidance

• Mounting: Ensure adequate ventilation around the module. Do not block airflow.
• Wiring: Use cables with cross-section 0.75~2 mm. For clamped terminals, use RAV1.25-3.5 or RAV2-3.5 types.
• Input Connection: Connect 24VDC within the specified range. The input fuse is built-in and not user-replaceable; do not attempt to replace it.
• Output Connection: Verify output voltage is 5VDC (±2%) before connecting loads. The RUN contact can be used for status monitoring.
• Grounding: Follow standard industrial grounding practices to minimize noise.

Maintenance & Reliability

• Periodic Inspection: Check LED status indicator. It should be ON when output voltage is normal. If off, verify input power and load conditions.
• Environmental Considerations: Operate within the specified temperature range to maintain output power rating. Keep the module clean and free from dust.
• Fuse Protection: The built-in fuse protects the module. If the fuse blows, the module must be serviced by qualified personnel; do not attempt field replacement.

Why Do Industrial Power Supplies Fail Unexpectedly?

Unexpected power supply failures can halt production lines and lead to costly downtime. The Honeywell 2MLR-DC42 Power Supply Module addresses this challenge with robust design and reliable performance. This module ensures stable 5VDC output for your control systems, helping you maintain continuous operations.

Compatibility & Integration

The 2MLR-DC42 is designed for Honeywell control systems but can be integrated into other industrial setups using standard 24VDC power. The RUN contact provides a dry contact for status monitoring, compatible with most PLC inputs. The module's output is 5VDC, suitable for logic circuits requiring stable low-voltage supply.

Selection Guide & Purchasing Advice

When selecting a power supply, consider your system's voltage and current requirements. The 2MLR-DC42 provides 5VDC at 7.5A, sufficient for many control modules. For higher current needs, consult AutoDCSTech for alternatives. AutoDCSTech offers genuine Honeywell parts and expert support. Contact them to verify lifecycle status and availability before ordering.

Troubleshooting & Common Issues

• No Output Voltage: Check input voltage (19.2~28.8 VDC). If input is correct but output is absent, the internal fuse may be blown. Return the module for service.
• Output Voltage Out of Range: Ensure load does not exceed 7.5A. Overload can cause voltage drop.
• RUN Contact Not Switching: Verify the contact is wired correctly. The rated switching voltage/current is 24VDC, 0.5A. Do not exceed these values.
• LED Not Lit: If output voltage is normal but LED is off, the LED circuit may be faulty. Contact AutoDCSTech for repair.

For any technical questions, AutoDCSTech's engineers can provide guidance based on your specific application.