Description
Providing regulated system power to Master-Logic 200 backplanes, the Honeywell 2MLP-ACF2 is a high-efficiency AC-to-DC power supply module engineered for critical control applications. This module accepts a wide universal input voltage range and converts it to a stable 5 VDC system bus voltage to drive local processing and I/O modules on the rack. Featuring integrated overcurrent protection and diagnostic status reporting, it maintains system integrity in high-demand industrial processing environments.
Features
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Universal Input: Supports a wide-range input voltage compatibility (Free Voltage) for international industrial networks.
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High-Capacity Rail Output: Delivers a reliable 5 VDC, 6A output to meet the power demands of dense backplane configurations.
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Robust Protection: Built-in overcurrent and overvoltage protection circuitry automatically safeguards downstream components.
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Diagnostic Diagnostics: Features front-facing LED indicators for clear, real-time status monitoring of output states.
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Thermal Efficiency: Optimized heat dissipation design allows reliable operation within standard enclosed industrial control panels.
Applications
- Distributed Control Systems (DCS) power distribution networks.
- Process manufacturing assembly line control panels.
- Municipal water treatment facility automation racks.
- Power generation and substation monitoring infrastructure.
Technical Specifications Table
| Parameter |
Specification Value |
| Manufacturer |
Honeywell |
| Model Number |
2MLP-ACF2 |
| Series |
Master-Logic 200 (ML200) |
| Input Voltage Range |
100 to 240 VAC (Free Voltage, 110V / 220V nominal) |
| Input Frequency |
50 / 60 Hz |
| Output Voltage |
5 VDC |
| Output Current |
6.0 A |
| Efficiency |
Typical > 70% |
| Operating Temperature |
0 to 55 degC |
| Storage Temperature |
-25 to 70 degC |
| Mounting Position |
Dedicated power slot (far-left of backplane) |
| Shipping Weight (Calculated) |
2.0 kg |
| Package Dimensions (Calculated) |
150 mm x 110 mm x 130 mm |
Connections and Interfaces
| Terminal Label |
Function / Circuit Assignment |
| L |
AC Live Line Input (100 - 240 VAC) |
| N |
AC Neutral Input |
| FG |
Frame Ground (must earth directly to cabinet ground bar) |
Empirical Engineering Insights
Alternative Models & Compatibility
This power module is specifically engineered to mount to Honeywell Master-Logic 200 series racks. When planning retrofits or replacements of older module versions, ensure the cumulative active 5V current consumption of your processor and I/O cards does not exceed the unit’s 6.0 A maximum output. Standard base racks do not support parallel multi-power-supply operation for redundancy; only one unit can feed the main bus rail.
Application Pitfalls & Engineering Notes
Operating the module at or near maximum output capacity in unventilated or poorly insulated enclosures can trigger the integrated thermal shutdown loop. To prevent unwanted system downtime, design cabinets with a minimum 50 mm clearance above and below the power module assembly to foster passive convection cooling currents.
Commissioning & Wiring Tips
For electrical noise reduction, use shielded copper wire with a cross-sectional area of at least 2.0 mm² (14 AWG) for the Frame Ground (FG) hookup. It is critical to feed the module using a dedicated, line-filtered AC supply, independent from high-inductive load paths such as heavy motor starters or variable frequency drives.
Installation Guidelines
CRITICAL WARNING: Prior to mounting or performing wiring operations on this hardware, ensure all upstream primary AC power sources are completely locked out and tagged out. Verify there is no residual energy on the lines using a calibrated digital multimeter before contacting terminal blocks.
1
Ensure the Master-Logic backplane chassis is securely bolted to the sub-panel ground system before proceeding.
2
Insert the module's bottom hook guide into the far-left slot position of the base backplane and hinge upward until the top locking mechanism clicks firmly in place.
3
Connect the Frame Ground (FG) terminal block screw to the local system ground bus with low-impedance copper wire.
4
Wire the AC inputs (L and N) to the terminal block, utilizing insulated ring or spade lugs crimped securely onto the conductor strands.
5
Double-check all terminal torque values to prevent loose connection resistance, energize the AC source line, and verify the status LED lights green.