MELSEC-QD75MH2 MITSUBISHI

MELSEC-QD75MH2 MITSUBISHI central processing unit

Product  Description：

The Central Processing Unit (CPU) is the core brain of the Mitsubishi Electric MELSEC Programmable Logic Controller (PLC) system. It is responsible for storing the control program, executing logic instructions, performing complex mathematical calculations, and managing communication between all connected I/O and intelligent modules. From the compact FX series to the high-performance iQ-R and iQ-F series, these units provide the computational power necessary to drive modern automated manufacturing.

Product Parameters

Mitsubishi CPU performance is typically measured by its processing speed and memory capacity to handle complex automation tasks:

• Instruction Execution Speed: High-end models feature basic instruction speeds as fast as 0.98 nanoseconds, enabling near-instantaneous response times.

• Program Capacity: Memory sizes range from 10k steps for small-scale machines to over 1200k steps for large-scale plant control.

• Built-in I/O and Functions: Many CPUs come with integrated high-speed counters, pulse outputs for positioning, and built-in Ethernet or RS-485 ports.

• Multi-CPU Capacity: System racks can often host up to four specialized CPUs (PLC, Motion, Robot, or CNC) to share the processing load via a high-speed backplane.

• SD Memory Card Support: Supports high-capacity SD cards for program backup, data logging, and firmware updates.

• Number of I/O Points: Capable of managing from 30 points in micro-controllers up to 4096 local points (and tens of thousands of remote points) in modular systems.

Product Advantages

Mitsubishi CPUs are recognized globally for their balance of high-speed performance and operational stability:

• Innovative iQ Platform: The iQ architecture reduces total cost of ownership by integrating different controller types onto a single seamless backplane, allowing for ultra-fast data sharing between logic and motion control.

• Advanced Security: Built-in hardware security prevents unauthorized access to intellectual property, requiring security keys to open or modify the control program.

• Battery-less Operation: Newer generations (like the iQ-F series) utilize non-volatile memory that does not require a backup battery, eliminating maintenance tasks and reducing environmental impact.

• Integrated Data Logging: These units can automatically log specified device data to an SD card at microsecond intervals, which is invaluable for troubleshooting and quality analysis.

• High Reliability: Designed with sophisticated self-diagnostic functions that monitor hardware health and program execution integrity in real-time.

Product Applications

The versatility of the Mitsubishi CPU makes it suitable for almost any control scenario:

• High-Speed Packaging: Coordinating multi-axis motion and vision systems to package goods at hundreds of units per minute.

• Automotive Manufacturing: Managing complex assembly lines and welding robot synchronization where downtime is extremely costly.

• Semiconductor Fabrication: Providing the ultra-low latency control required for wafer handling and chemical vapor deposition processes.

• Infrastructure Control: Operating large-scale water treatment plants, tunnel lighting, and railway signaling systems.

• Smart Building Management: Controlling HVAC and elevator systems in high-rise buildings to optimize energy efficiency.

Important Precautions

To ensure the safety of the operator and the longevity of the hardware, the following precautions should be followed:

• Power Supply Matching: Always ensure the power supply module provides the correct voltage and current for the CPU and all attached modules. An overloaded power supply can cause the CPU to reset unexpectedly.

• Static Electricity Protection: When handling the CPU module, especially when inserting or removing SD cards or communication cables, ensure you are properly grounded to prevent electrostatic discharge damage.

• Proper Shutdown Procedure: Before removing the CPU from the base unit or disconnecting the power, ensure that the "RUN" switch is turned to "STOP" and any active data logging processes are safely concluded.

• Environmental Limits: Do not install the CPU in environments with conductive dust, corrosive gases, or high vibration without appropriate protective enclosures.

• Firmware Synchronization: When using multiple CPUs or intelligent modules on the same rack, ensure that their firmware versions are compatible to prevent communication errors on the high-speed bus.

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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