QJ71AS92 MITSUBISHI

QJ71AS92 MITSUBISHI Termination Unit

Product  Description：

The Mitsubishi Termination Unit (TU) is a specialized hardware component designed for use with Mitsubishi Electric’s programmable logic controllers (PLCs), specifically within the MELSEC series. These units serve as the physical interface between the internal control logic of the PLC and external field devices like sensors, actuators, and motors. They are engineered to simplify wiring, reduce cabinet space, and ensure high-speed signal integrity.

Product Specifications

Mitsubishi Termination Units vary depending on the specific PLC series (such as the iQ-R, iQ-F, or Q Series), but they generally share the following technical characteristics:

• Connection Type: Available in screw terminal blocks, spring-clamp terminals for vibration resistance, or high-density D-sub/ribbon cable connectors.

• Voltage Rating: Typically supports 24V DC for logic signals, with specific models rated for 100-240V AC for power-heavy applications.

• Current Capacity: Standard units handle between 0.5A to 2A per point, depending on the relay or transistor output type.

• I/O Density: Ranges from 16-point to 64-point configurations per single unit.

• Mounting: Standard 35mm DIN rail mounting for easy installation in industrial control panels.

• Isolation: High optocoupler or relay isolation to protect the PLC CPU from external electrical surges.

Product Advantages

Choosing a Mitsubishi Termination Unit provides several strategic benefits for industrial automation:

• Simplified Wiring: These units eliminate the need for complex terminal block arrays, reducing the risk of wiring errors and shortening the time required for assembly.

• Space Efficiency: The compact design allows for higher I/O density within a smaller footprint, which is critical for modern, space-constrained control cabinets.

• Maintenance Speed: Many Mitsubishi TUs feature "removable" terminal blocks. This allows technicians to replace a faulty unit without disconnecting every individual wire, significantly reducing downtime.

• Durability: Built to withstand harsh industrial environments, they offer high resistance to electromagnetic interference (EMI) and physical vibration.

• Seamless Integration: Being an OEM product, they offer perfect compatibility with MELSEC bus systems, ensuring no data loss or signal lag.

Usage Precautions

To ensure the longevity and safety of the system, several precautions must be observed:

• Voltage Matching: Always verify that the field device voltage matches the TU's rated voltage. Applying AC power to a DC-rated unit will cause immediate hardware failure.

• Tightening Torque: For screw-type units, ensure that terminals are tightened to the specific torque mentioned in the manual to prevent overheating or loose connections.

• Environment: Ensure the unit is installed in an environment free of conductive dust, corrosive gases, and high humidity, unless it is housed in an appropriately rated IP enclosure.

• Wiring Separation: Route high-voltage power lines and low-voltage signal lines through separate ducts to prevent inductive noise from disrupting the PLC logic.

• Power Off Installation: Never connect or disconnect the termination unit or its wiring while the PLC power is on to avoid electrical arcing or damage to the internal circuitry.

Product Applications

Mitsubishi Termination Units are utilized across various sectors where precision and reliability are paramount:

• Automotive Assembly: Used to manage the vast array of proximity sensors and pneumatic valves on robotic welding and assembly lines.

• Semiconductor Manufacturing: Employed in cleanroom environments for high-speed data acquisition and control of wafer handling systems.

• Water Treatment: Integrated into control panels for pump stations to manage flow meters, level sensors, and motor starters.

• Packaging Machinery: Ideal for high-speed labeling and sorting machines that require rapid I/O response times and compact wiring.

• Building Automation: Used to control HVAC systems, lighting, and elevator logic in large-scale commercial infrastructures.

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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