GT2708-VTBD MITSUBISHI

GT2708-VTBD MITSUBISHI analog module

Product  Description：

Mitsubishi Electric Analog Modules are high-precision components within the MELSEC PLC range that facilitate the conversion between continuous physical signals and digital data. These modules are categorized into Analog Input (A/D) modules, which convert external sensor signals like temperature or pressure into digital values, and Analog Output (D/A) modules, which convert digital commands from the CPU into analog voltages or currents to control devices like variable speed drives or valves. They serve as the critical link for any automation system requiring "fine-tuned" control rather than simple on-off logic.

Product Parameters

The technical performance of Mitsubishi Analog Modules is defined by their precision and speed across various signal types:

• Signal Ranges: Supports standard voltage ranges such as 0-5V DC, 1-5V DC, and -10 to 10V DC, as well as current ranges like 0-20mA and 4-20mA DC.

• Resolution: High-definition digital conversion typically at 16-bit, providing a granular scale of -32000 to 32000 or 0 to 64000 for precise control.

• Conversion Speed: Capable of high-speed sampling with rates as fast as 80 microseconds per channel, depending on the specific module series (e.g., iQ-R or Q series).

• Accuracy: High precision with a total accuracy of +/- 0.1 percent or better at room temperature, ensuring minimal deviation from the real-world value.

• Channel Density: Available in configurations of 2, 4, 8, or 16 channels per module to accommodate different system scales.

• Isolation: Features high-voltage isolation between the power supply, the internal PLC bus, and individual channels to prevent electrical interference.

Product Advantages

Mitsubishi Analog Modules are engineered for high-performance environments where accuracy is non-negotiable:

• Intelligent Onboard Processing: These modules can perform complex calculations independently of the CPU, such as scaling, digital filtering, and calculating average values to smooth out noisy signals.

• Disconnection Detection: Built-in safety features can detect a broken wire in a 4-20mA loop or 1-5V circuit, immediately notifying the system to prevent a "runaway" control scenario.

• High Noise Immunity: Advanced hardware design and internal shielding effectively suppress electromagnetic interference, which is vital in environments with high-power motors and inverters.

• User-Friendly Configuration: Parameters are set through software labels and dedicated instruction sets in GX Works, eliminating the need for complex manual register mapping.

• Thermal Stability: Excellent temperature compensation circuitry ensures that accuracy remains consistent even if the control cabinet temperature fluctuates during the workday.

Product Applications

These modules are used in any industrial process requiring variable control or measurement:

• Temperature Control: Interfacing with transmitters in plastic extrusion, food processing, and furnace management to maintain precise thermal profiles.

• Motion and Speed Control: Providing the speed reference signal for AC inverters or DC drives to control conveyor speeds or spindle rotations.

• Pressure and Flow Regulation: Monitoring gas or liquid pressure in chemical plants and adjusting proportional valves to maintain a steady flow.

• Tension Control: Managing the winding and unwinding tension in paper mills, textile machines, and film processing lines.

• Environmental Monitoring: Collecting data from humidity, CO2, and light sensors to manage climate control in large-scale greenhouses or cleanrooms.

Important Precautions

To maintain the accuracy and lifespan of the module, the following installation and operational rules must be followed:

• Cable Selection: Always use shielded twisted-pair (STP) cables for analog signals. The shield should be grounded at a single point, typically the PLC side, to avoid ground loop noise.

• Routing Separation: Never run analog signal cables in the same conduit or tray as high-voltage AC power lines. Maintain a minimum distance of 100mm to prevent inductive coupling.

• Terminal Tightening: Ensure all terminal screws are tightened to the specified torque. Loose connections can introduce variable resistance, leading to significant measurement errors.

• Unused Channel Treatment: For input modules, unused channels should be short-circuited or disabled in the software to prevent the digital values from "floating" due to induced noise.

• Signal Type Matching: Ensure that the module’s hardware jumper settings (if applicable) and software settings match the actual sensor type (Voltage vs. Current) to avoid burning out the input circuitry.

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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