Honeywell 2MLR-AC12 Redundant AC Power Supply Module, 110 VAC Input, 5 VDC at 5.5 A

Product Overview

The Honeywell 2MLR-AC12 is a redundant AC power supply module designed for the MasterLogic-200R PLC system. It converts 110 VAC input into a regulated 5 VDC output at 5.5 A, delivering stable and continuous power to CPUs, I/O modules, and communication interfaces. With built-in overcurrent protection, RUN relay output, and hot-swappable redundancy, this module ensures high system reliability and minimal downtime in critical industrial automation scenarios.

Key Specifications

• Input Voltage (Rated): 110 VAC
• Input Voltage Range: 85–132 VAC
• Input Frequency: 50/60 Hz (47–63 Hz)
• Max Input Power: 110 VA / 42 W
• Inrush Current: ≤ 20 A peak (≤ 8 ms)
• Efficiency: ≥ 65%
• Output Voltage: 5 VDC (±2%)
• Output Current: 5.5 A
• Output Power (@ 55°C): 27.5 W
• Overcurrent Protection: 6.0–13.0 A
• Instantaneous Interruption Handling: ≤ 20 ms
• RUN Relay Output: Form-C contact, 24 VDC @ 0.5 A
• Relay Minimum Switching Load: 5 VDC @ 1 mA
• Response Time (On/Off): ≤ 10 ms / ≤ 12 ms
• LED Status Indicator: ON when output voltage is normal
• Cable Specification: 0.75–2 mm²
• Terminal Type: RAV1.25-3.5, RAV2-3.5
• Dimensions (W × H × D): 55 × 95 × 90 mm
• Weight: 0.326 kg
• Certifications: CE, UL (fuse), RoHS

Features & Benefits

1. Redundant Hot-Swappable Design: Install two 2MLR-AC12 modules in redundant power rails for seamless failover without system shutdown.
2. Wide Input Range: Operates from 85 VAC to 132 VAC at 50/60 Hz, accommodating global industrial power standards.
3. Built-In Protection: Overcurrent protection (6.0–13.0 A), slow-blow fuse, and ≤ 20 ms interruption handling safeguard connected modules.
4. RUN Relay Output: Form-C contact provides external status indication and interlocking capability for upstream safety circuits.
5. High Efficiency: ≥ 65% efficiency minimizes heat generation and reduces cooling requirements in control cabinets.
6. Visual Status Monitoring: Front-panel LED illuminates when output voltage is within specification for at-a-glance diagnostics.

FAQ

Q: Can this module be hot-swapped during operation?
A: Yes, the 2MLR-AC12 is designed for hot-swappable redundancy when installed in MasterLogic-200R redundant power rails. Always follow proper ESD procedures when replacing modules.

Q: What is the difference between 2MLR-AC12 and 2MLR-AC22?
A: The 2MLR-AC12 accepts 110 VAC input (85–132 VAC), while the 2MLR-AC22 accepts 220 VAC input (170–264 VAC). Both deliver 5 VDC at 5.5 A. Select based on your plant's AC voltage standard.

Q: Does the module include a replaceable fuse?
A: The module contains a built-in slow-blow fuse rated for UL standards. The fuse is not user-replaceable; if blown, replace the entire module.

Q: What cable gauge is recommended?
A: Use 0.75 mm² to 2 mm² copper wire with RAV1.25-3.5 or RAV2-3.5 crimp terminals for secure and reliable connections.

Installation Guide

• Install the module into a redundant power slot of the MasterLogic-200R main or expansion base.
• Connect 110 VAC power to the L and N terminals using 0.75–2 mm² wire with appropriate crimp terminals.
• Connect the ground terminal to the cabinet earth bus for safety and EMI compliance.
• Wire the RUN relay output to your status indicator or safety interlock circuit if remote power monitoring is required.
• For redundancy, install a second 2MLR-AC12 in the adjacent redundant power slot and verify both LEDs indicate normal operation.
• Verify output voltage via the front-panel LED before bringing the system online.

Selection Tips

• Input Voltage: Confirm your plant provides 110 VAC (85–132 VAC range). For 220 VAC installations, order the 2MLR-AC22 instead.
• Current Capacity: The 5.5 A output supports typical MasterLogic-200R configurations. For higher current demands (up to 8.5 A), select the 2MLR-AC13 (110 VAC) or 2MLR-AC23 (220 VAC).
• Redundancy: Always install two identical power supply modules in redundant slots to achieve true power redundancy.
• Heat Dissipation: At 27.5 W output power, ensure adequate ventilation or cabinet cooling if multiple high-draw modules are installed.