Product Details
The Honeywell 2MLP-DC42, also cataloged as the 2MLP-DC42 Power Supply, operates as a dedicated hardware component for internal bus voltage regulation within MasterLogic 200 rack architectures. It converts a nominal 24 VDC input source into a stabilized 5 VDC output at up to 6 A to energize backplane logic circuits and active expansion slots.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 2MLP-DC42 |
| Brand | Honeywell |
| Origin | Industrial Standard Assembly |
| Weight | 1.10 lbs (0.50 kg) |
| Dimensions | Rack Slot Standard |
| Operating Temp | 0 to 55 deg C |
| Power Consumption | Input Current: 0.80 A at 24 VDC |
| Input Voltage | 24 VDC |
| Output Voltage | 5 VDC |
| Max Output Current | 6 A |
| Input Protection | Built-in Internal Fuse |
| Hold-Up Time | 10 ms or shorter |
| Diagnostic Interface | RUN Relay Contact |
Channel-to-Channel Isolation & DCS Power Stability
The 2MLP-DC42 incorporates internal galvanic isolation barriers between the 24 VDC input power terminals, the 5 VDC backplane logic rail, and chassis ground. This structural decoupling prevents field-side electrical noise, common-mode voltage spikes, and ground loop current from corrupting 4-20 mA HART loop signals and high-density DCS analog input channels across the rack assembly. Integrated input line filtering stabilizes logic bus rail voltages during brownouts, maintaining execution continuity for up to 10 ms.
Frequently Asked Questions
Q: What protection mechanism is integrated into the 2MLP-DC42 to handle input overcurrent conditions?
A: The module contains an internal built-in fuse on the 24 VDC input line. If an overcurrent fault occurs, the internal fuse opens to prevent electrical damage to the backplane and adjacent processing modules.
Q: How does the RUN contact operate during power state transitions?
A: The RUN relay contact remains closed when the 2MLP-DC42 maintains stable 5 VDC bus output within valid voltage thresholds. If input voltage drops below operating tolerance or an output fault occurs, the contact opens to trigger system diagnostic alarms.
Field Installation Guidelines
- Confirm that the primary 24 VDC power supply is switched off before terminating input leads to the 2MLP-DC42 power terminals.
- Connect the frame ground (FG) terminal to the central enclosure earth ground bar using a short, low-impedance conductor.
- Ensure total current consumption of all CPU, communication, and I/O modules mounted on the backplane does not exceed the 6 A maximum 5 VDC output rating.
- Provide a minimum clearance of 50 mm above and below the power supply chassis to allow proper thermal heat dissipation via natural convection.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
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- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
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