Description
MITSUBISHI A0J2HCPU CPU module
Product Dimensions:
The A0J2HCPU is a high-performance, compact Central Processing Unit (CPU) module from Mitsubishi Electric’s MELSEC-A series. It was designed as an all-in-one controller that integrates the CPU, power supply, and I/O points into a single unit, making it an efficient solution for small-to-medium-scale automation tasks.
### Technical Specifications
The A0J2HCPU is characterized by its increased processing speed and memory capacity compared to the standard A0J2 model.
| Feature | Specification |
| Control Method | Stored program cyclic operation |
| I/O Control Method | Refresh method (Direct I/O also possible) |
| Programming Language | Relay symbol language (Ladder Logic) |
| Processing Speed | 1.25 $\mu s$ / step (Sequence instructions) |
| Program Capacity | Max 8k steps |
| I/O Points | 240 points (Max 480 with extension) |
| Memory Type | RAM (built-in), EPROM/EEPROM (optional) |
| Communication Interface | RS-422 for programming/peripheral connection |
| Power Supply | 100-120V AC / 200-240V AC |
### Product Advantages
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Space-Saving Design: Its “all-in-one” construction reduces the physical footprint in the control panel.
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High-Speed Processing: The “H” in the model name stands for “High-speed,” offering significantly faster execution of logic compared to the base A0J2.
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Flexibility: While it is a compact unit, it supports a variety of extension modules for digital I/O, analog signals, and positioning.
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Reliability: Built with industrial-grade durability, it is known for a long service life in harsh environments.
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Ease of Maintenance: Features clear LED indicators for CPU status (Run, Error, Battery) and I/O status.
### Important Considerations (Precautions)
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Lifecycle Status: The MELSEC-A series (including the A0J2H) is discontinued. Finding new units is difficult, and they are primarily available as refurbished or surplus stock.
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Battery Maintenance: The internal RAM and clock are backed up by a lithium battery. If the “BATT” LED lights up, replace the battery immediately to avoid losing the program.
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Migration: Since this is legacy hardware, it is highly recommended to plan a migration to the modern MELSEC iQ-R or iQ-F (FX5U) series for better support and parts availability.
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Heat Dissipation: Ensure proper ventilation within the cabinet, as the integrated power supply generates heat during operation.
### Common Applications
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Material Handling: Conveyor systems, simple palletizers, and sorting machines.
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Packaging Machinery: Small-scale wrapping, labeling, and filling machines.
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Utility Control: Water pump stations, fan controls, and lighting automation in commercial buildings.
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Dedicated Tooling: Small CNC auxiliary controllers or specialized assembly jigs.
Shipping Port: Xiamen, 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
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