Honeywell 2MLR-AC23 Power Supply Module – 220 VAC Input, 5 VDC Output

Technical Specifications Breakdown

Key parameters for the 2MLR-AC23 are listed below for quick reference:

Industry Applications

This power supply module is a solid choice for a range of industrial settings. Its 5 VDC output is commonly used to power logic circuits, microprocessors, and signal conditioning boards. In a typical PLC cabinet, the 2MLR-AC23 can replace an aging or failed unit, restoring reliable power to the backplane. The built-in RUN contact provides a dry contact signal that indicates output health, which can be wired to a supervisory system for remote monitoring. With an allowed instantaneous interruption of 20 ms, the module offers resilience against brief line dips, reducing the risk of spurious resets in critical processes.

Installation & Setup Guidance

Before installation, verify that the input voltage is within the 176V~264VAC range. Use cables with a cross-section of 0.75 ~ 2 mm for connections. For the RUN contact, the rated switching voltage/current is 24VDC, 0.5A, and the minimum switching load is 5VDC, 1 mA. Ensure that the load does not exceed these ratings. The module is designed for panel mounting; maintain adequate ventilation to keep the ambient temperature below 55°C for full output power. The input fuse is built-in and not replaceable by the user, so if the fuse blows, the module must be serviced by qualified personnel.

Maintenance & Reliability

The 2MLR-AC23 is built for long service life, with a mechanical life of 20 million operations for the RUN contact and an electrical life of 100,000 operations at rated switching current. Periodic inspection should include checking for loose connections, verifying that the input voltage remains within range, and confirming that the LED status indicator is lit when the output is normal. Keep the enclosure clean and free from dust to maintain thermal performance. If the module is exposed to high ambient temperatures, derate the output power accordingly.

Reliable Power Conversion for Industrial Control Systems

In industrial automation, a stable and clean power supply is the backbone of every control loop. The Honeywell 2MLR-AC23 power supply module is engineered to convert 220 VAC line power into a regulated 5 VDC output, ensuring your controllers and field devices operate without interruption.

Compatibility & Integration

The 2MLR-AC23 is a standalone power supply module, so it can be integrated into most control systems that require a 5 VDC rail. The RUN contact output can be connected to a digital input of a PLC or DCS to provide diagnostic feedback. The built-in fuses are UL approved, ensuring compliance with North American safety standards. When replacing an existing power supply, verify that the output voltage and current ratings match your system requirements.

Selection Guide & Purchasing Advice

When selecting a replacement power supply, always confirm the input voltage range, output voltage, and current capacity. The 2MLR-AC23 meets the needs of many applications with its 5 VDC/7.5 A output. At AutoDCSTech, we stock genuine Honeywell modules and can help you verify compatibility. Contact our team for current availability and lifecycle status before ordering. Please verify current lifecycle status and availability with AutoDCSTech before ordering.

Troubleshooting & Common Issues

If the output voltage is absent, first check the input power and the status LED. If the LED is off, the input fuse may be blown; since it is not user-replaceable, return the module for service. If the output voltage is low, check the load current; the module provides up to 7.5 A, and overcurrent protection activates between 9.0 A and 17.0 A. If the RUN contact does not close, verify that the output voltage is within ±2% of 5 VDC. For persistent issues, consult the system documentation or contact AutoDCSTech for technical support.