Technical Specifications Breakdown
Key parameters for the 2MLP-DC42 are listed below for quick reference:
| Feature | Specification |
|---|---|
| Rated input voltage | DC 24V |
| Inrush current | 80A Peak or less |
| Efficiency | 60% or more |
| Input fuse | Built-in (user no change), UL standard (Slow Blow Type) |
| Allowed instantaneous interruption | 10 ms and shorter |
| Output1 voltage | DC 5V (±2%) |
| Output1 current | 6.0A |
| Output1 over current protect | 6.6A or more |
| Output1 over voltage protect | 5.5V ~ 6.5V |
| Application RUN contact | DC 24V, 0.5A |
| Minimum switching load | DC 5V, 1 mA |
| Response time OFF→ON/ON→OFF | 10 ms or less / 12 ms or less |
| Life (mechanical) | 20 million and more times |
| Life (electrical) | 100 thousand and more times |
| Voltage indicator | Output voltage normal, LED ON |
| Cable specification | 0.75 ~ 2mm, compressed terminal, RAV 1.25 - 3.5, RAV 2 - 3.5 |
| Weight | 0.5kg |
| Battery nominal voltage/current | DC 3.0V / 1,800mAh |
| Battery warranty period | 5 years (at ambient temperature) |
| Battery purpose | Program and data backup, RTC operation when Power-OFF |
| Battery specification | Manganese dioxide lithium battery |
| Battery outer dimension | φ 17.0 X 33.5mm |
Real-World Applications
Protecting Critical Processes in Manufacturing
In a continuous manufacturing line, a brief power dip can cause PLC memory loss, leading to costly reconfiguration and downtime. The 2MLP-DC42's allowed instantaneous interruption of 10 ms or shorter ensures that momentary power glitches do not disrupt the controller's operation.
Backup for Data Integrity in Batch Processing
For batch processing industries like pharmaceuticals or food and beverage, maintaining program integrity is essential. The built-in battery (DC 3.0V, 1,800mAh) provides up to 5 years of backup at ambient temperature, preserving programs and real-time clock data during power-off events. This feature minimizes the risk of data loss and ensures a fast restart when power is restored.
Reliable Power for Remote Monitoring Stations
Remote monitoring stations often face unstable power supplies. The 2MLP-DC42's wide input tolerance and built-in fuse protect against overcurrent and short circuits. Its compact design (0.5kg) makes it easy to integrate into existing control cabinets, providing dependable power for remote telemetry units.

Installation & Setup Guidance
When installing the 2MLP-DC42, follow these practical steps to ensure reliable operation:
- Mounting: Secure the module firmly in the control cabinet, ensuring adequate ventilation around the unit.
- Wiring: Use cables with a cross-section of 0.75 to 2 mm² and compressed terminals (RAV 1.25 - 3.5 or RAV 2 - 3.5) for secure connections. Verify polarity before connecting the 24V DC input.
- Fuse Check: The input fuse is built-in and not user-replaceable. If the fuse blows, contact qualified service personnel.
- Battery Installation: The battery is pre-installed. Ensure the battery is properly connected to maintain backup power.
- Indicator Verification: After power-up, check the voltage indicator LED. It should be ON when the output voltage is normal.
Maintenance & Reliability
To maximize the lifespan of your 2MLP-DC42, follow these maintenance practices:
- Periodic Inspection: Inspect the module every 6 to 12 months for dust accumulation, loose connections, or signs of overheating.
- Battery Replacement: The battery has a warranty period of 5 years at ambient temperature. Plan for replacement before the warranty expires to avoid data loss.
- Environmental Conditions: Operate the module within the specified temperature and humidity ranges (not listed, but ensure a clean, dry environment).
- Electrical Life: The electrical life is rated at 100 thousand operations or more, so the RUN contact is durable for most applications.
Powering Your MasterLogic-200 PLC with Confidence
The Honeywell 2MLP-DC42 power supply is engineered to keep your MasterLogic-200 system running smoothly, providing stable DC power and reliable backup for critical programs and data.
This power supply module is a key component for any industrial automation setup that depends on Honeywell's MasterLogic-200 series. It converts a 24V DC input into a regulated 5V DC output, ensuring your PLC's logic circuits receive consistent power. With a built-in input fuse and a battery backup for memory retention, the 2MLP-DC42 helps safeguard your operations against unexpected interruptions.

Compatibility & Integration
The 2MLP-DC42 is designed specifically for the Honeywell MasterLogic-200 series PLCs. It is not compatible with other series without proper adapters. Ensure your PLC base unit is compatible with this power supply module. The RUN contact output can be used to signal external monitoring systems, with a minimum switching load of DC 5V, 1 mA.
Selection Guide & Purchasing Advice
When selecting a power supply for your MasterLogic-200 system, verify the input voltage (24V DC) and output requirements (5V DC, 6A) match your application. The 2MLP-DC42 is a reliable choice for new installations or as a replacement for failed units. At AutoDCSTech, we stock genuine Honeywell parts to ensure compatibility and performance. Contact our team to confirm availability and lifecycle status before ordering.
Troubleshooting & Common Issues
If the output voltage indicator is not ON, check the input power supply and wiring. If the module does not output 5V DC, verify that the output current does not exceed 6.0A. The overcurrent protection activates at 6.6A or more, so check for short circuits or excessive loads. For overvoltage issues, the protection range is 5.5V to 6.5V; if the output exceeds this, the module may be faulty. Always consult the user manual for detailed diagnostics.
Availability & Condition at AutoDCSTech
| Part Number | 2MLP-DC42 |
|---|---|
| Availability | In Stock |
| Condition | New |
| Warranty | One Year |
| Origin | US |
