MITSUBISHI AL2-14MR-D ALPHA LOGIC 2 MODULE 24 VDC! COOL & READY 8X5518
The MITSUBISHI AL2-14MR-D is a compact, micro-sized Programmable Logic Controller (PLC) from the Mitsubishi Electric ALPHA 2 (AL2) series. It is designed as a cost-effective and simple-to-use automation solution for small-scale applications, replacing traditional relay control panels.
This specific model is a 24 VDC powered unit with Relay outputs, making it a versatile choice for controlling a wide range of devices.
Key Features
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Compact, All-in-One Design:Â Integrates the CPU, power supply, inputs, and outputs into a single, space-saving unit.
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Simple Programming: Uses Mitsubishi’s user-friendly ALPHA Programming Software (or the built-in ladder logic programming function), which is easy to learn, even for those new to PLCs.
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Relay Outputs:Â The relay contacts allow it to switch AC or DC loads, providing great flexibility for controlling devices like contactors, solenoid valves, and small motors.
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24 VDC Power Supply:Â Suitable for industrial environments where 24VDC is the standard control voltage, enhancing safety and compatibility with other DC sensors and devices.
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Built-in Real-Time Clock:Â Allows for time-based control and scheduling of operations.
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Economic Solution:Â An affordable entry into automation, perfect for simple machines and processes where a full-sized PLC is overkill.
Technical Specifications
| Category | Specification |
|---|---|
| Model | MITSUBISHI AL2-14MR-D |
| Series | ALPHA 2 (AL2) |
| Power Supply | 24 VDC |
| Input Type | Digital (Sink/Source) |
| Output Type | Relay (Dry Contact) |
| I/O Configuration | 14 I/O Points Total |
|   • Digital Inputs | 8 Points (24 VDC) |
|   • Relay Outputs | 6 Points |
| Output Contact Rating | 2A per point @ 250VAC / 24VDC |
| Programming Language | Ladder Diagram |
| Programming Software | ALPHA Programming Tool (or built-in function) |
| Memory Capacity | 1,000 steps |
| Built-in Features | Real-Time Clock (RTC) |
| Physical Dimensions | Very compact (approx. 90 x 80 x 55 mm) |
Detailed Breakdown
1. I/O Configuration: AL2-14MR-D
The model number breaks down as follows:
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AL2: Series Name (ALPHA 2)
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14: Total I/O Points (14)
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M: Unit Type (Main Unit)
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R: Relay Outputs
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D: 24 VDC Power Supply
2. Inputs (8 Points)
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The 8 digital inputs are designed for 24VDC sensors (e.g., push buttons, proximity sensors, limit switches).
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They are sink/source universal, meaning they can be wired with either PNP (sourcing) or NPN (sinking) field devices, providing wiring flexibility.
3. Outputs (6 Points – Relay)
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The 6 outputs are electromechanical relays.
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Key Advantage:Â Relay outputs are isolated and can switch both AC (e.g., 120VAC, 240VAC) and DC (e.g., 24VDC) loads.
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Key Consideration:Â Relays have a mechanical life and are subject to wear over time, especially with frequent switching or inductive loads.
4. “COOL & READY” and “8X5518”
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“COOL & READY”: This is likely a marketing tagline used by the seller or distributor, emphasizing the product’s reliability and that it is in stock and ready for immediate use.
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“8X5518”: This is almost certainly a seller-specific internal part number, a distributor code, or a lot number. It is not an official Mitsubishi model number.
Typical Applications
The AL2-14MR-D is ideal for simple control tasks in various industries, including:
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Small Machine Automation (e.g., packaging machines, small conveyors)
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Commercial Equipment (e.g., car washes, amusement rides, vending machines)
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Building Automation (e.g., lighting control, pump control, HVAC control for small systems)
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Replacement of Complex Relay Panels





















