A0J2E-E56DT MITSUBISHI

A0J2E-E56DT MITSUBISHI Central control module

Product  Description：

The Mitsubishi A0J2E-E56DT is a compact, all-in-one Programmable Logic Controller (PLC) main unit from the legacy MELSEC-A0J2 series manufactured by Mitsubishi Electric. It integrates the Central Processing Unit (CPU), power supply, and a fixed count of Input/Output (I/O) points into a single base unit, making it suitable for small to medium-scale automation tasks.

Product Specifications

• Model Name: A0J2E-E56DT

• Product Series: MELSEC-A0J2

• Type: Compact PLC Main Unit (Integrated CPU, Power Supply, and I/O)

• Total I/O Points: 56 points

• Input Points: 32 points

  • Input Type: DC Input (typically $12 \text{ VDC}$ or $24 \text{ VDC}$)

  • Input Current: $3 \text{ mA}$ to $7 \text{ mA}$

  • Response Time: Selectable, often $6 \text{ ms}$ or $1 \text{ ms}$

• Output Points: 24 points

  • Output Type: Transistor (Sinking/NPN type for standard models, or possibly Source/PNP type depending on the exact variant/terminal arrangement)

  • Output Voltage: Typically $12 \text{ VDC}$ or $24 \text{ VDC}$

  • Max Load Per Point: Generally $0.8 \text{ A}$ per point

  • Response Time: Typically $2 \text{ ms}$

• Power Supply: $100-240 \text{ VAC}$ (Allows direct connection to standard AC mains supply)

• Program Capacity: $2 \text{ k steps}$ (kilosteps)

• Commoning: Inputs and outputs are typically grouped with multiple points sharing a common terminal.

• Terminal Type: Often features a 36-point terminal block for I/O wiring.

Product Advantages

• All-in-One Compactness: Integrating the CPU, power supply, and I/O into a single unit significantly saves space in control cabinets and simplifies wiring compared to modular systems.

• Transistor Output Speed: The transistor outputs provide high-speed switching capabilities, making the unit ideal for applications requiring fast control actions, such as interfacing with high-speed solenoids or for simple positioning tasks.

• Reliability: As part of the MELSEC-A series, it is built with robust industrial components designed for stable and reliable operation in demanding factory environments.

• Versatility in I/O: The 56 fixed I/O points offer a good balance for controlling a medium number of field devices without the need for additional expansion modules in many scenarios.

Important Considerations (Precautions)

• Discontinued/Legacy Status: The MELSEC-A0J2 series, including the A0J2E-E56DT, is a discontinued product line. Users must be aware of limited support, potential spare part scarcity, and should plan for migration to newer platforms like the MELSEC-Q series for new designs or significant system expansions.

• Safety Circuits: Due to the nature of PLCs, external safety circuits (e.g., emergency stop, protection interlocks) must be configured outside the programmable controller to ensure the entire system remains safe even in case of PLC or power failure.

• Power Down: All external power sources must be disconnected before installing, removing, or wiring the unit to prevent electric shock and damage to the module.

• Noise and Environment: The unit must be installed within a protective enclosure that guards against excessive dust, moisture, and electrical noise. Although built for industrial use, protection from severe transients is still necessary.

• Transistor Output Load: The maximum current load per output point and the total common current limit must be strictly observed to prevent damage to the internal transistor circuitry. Ensure the connected load is correctly matched (e.g., $24 \text{ VDC}$ load for $24 \text{ VDC}$ output).

Product Applications

The A0J2E-E56DT was commonly used as the main controller in small to medium-sized industrial control systems where cost-efficiency and a compact footprint were key requirements.

• Small Machine Control: Ideal for standalone machines such as small conveyor systems, packaging machines, or simple cutting and forming equipment.

• Building Automation: Used for controlling HVAC systems, lighting, and access control in smaller industrial or commercial facilities.

• Process Interlocks: Employed in basic chemical or manufacturing processes for simple sequential control, timing, counting, and safety interlocks.

• Jigs and Fixtures: Control of specialized tools, assembly jigs, and testing fixtures in a manufacturing environment.

The structure and details of the product：

Our services：

Shipping Port:  China

Payment: Bank of Chicago, Bank of Singapore

Express cooperation: fedex, DHL, UPS and your express account

Service: Professional Sales provides 24 hours /7 days online service

Warranty: one year

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