R120CPU MITSUBISHI

R120CPU MITSUBISHI Analog Input Module

Product  Description：

Mitsubishi Electric Analog Input Modules are high-precision components within the MELSEC PLC series designed to convert continuous analog signals from the physical world into digital data that the controller can process. These modules are essential for monitoring variables such as temperature, pressure, flow, and weight in industrial automation environments.

Product Parameters

The technical performance of these modules is defined by high resolution and fast conversion speeds to ensure accurate data acquisition:

• Input Channels: Typically available in configurations of 4, 8, or 16 channels per module depending on the series.

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

• Digital Resolution: High-resolution processing often ranging from 12-bit to 16-bit, providing up to 32,000 or 64,000 digital steps for precise measurement.

• Conversion Speed: Fast sampling rates reaching as low as 80 microseconds per channel in high-end R-Series modules.

• Accuracy: High precision with a maximum error of plus or minus 0.1 percent to 0.3 percent at ambient temperature.

• Isolation: Optocoupler or transformer isolation between input terminals and the PLC bus to prevent electrical noise propagation.

Product Advantages

Mitsubishi analog modules stand out for their intelligence and ease of integration:

• Signal Conditioning: Built-in digital filtering and scaling functions allow raw input data to be converted directly into engineering units (e.g., Celsius or PSI) within the module itself.

• Robust Noise Suppression: Advanced internal circuitry filters out high-frequency interference, ensuring stable readings even in electrically noisy factory environments.

• Easy Configuration: Setup is handled through GX Works software, allowing users to define input types and ranges via simple parameter settings without complex ladder logic.

• Diagnostic Intelligence: Many modules feature LED indicators and error codes to detect wire breakage, out-of-range signals, or hardware failures instantly.

• High Density: The compact design allows for a high number of input points in a small footprint, saving valuable space in the control cabinet.

Product Applications

These modules are used in any scenario requiring the measurement of fluctuating physical quantities:

• Process Control: Monitoring temperature and pressure in chemical reactors, food processing ovens, and water treatment facilities.

• Machine Monitoring: Tracking the tension of materials in paper mills or textile machines to ensure consistent quality.

• Energy Management: Measuring voltage and current from power sensors to analyze energy consumption patterns in smart factories.

• Hydraulic and Pneumatic Control: Sensing fluid pressure to maintain the precise force required in molding or stamping presses.

• Environmental Monitoring: Interfacing with humidity and CO2 sensors for large-scale HVAC and greenhouse climate control.

Important Precautions

To maintain accuracy and prevent hardware damage, the following precautions must be observed:

• Shielding and Grounding: Always use shielded twisted-pair cables for analog signals. The shield should be grounded at a single point to prevent ground loops and signal distortion.

• Wiring Separation: Analog signal wires must be kept away from AC power lines and high-speed switching cables to avoid electromagnetic induction.

• Unused Channels: Short-circuit the positive and negative terminals of any unused current input channels to prevent unstable readings or internal interference.

• Terminal Tightening: Ensure all terminal screws are tightened to the specified torque; loose connections can introduce resistance and significantly degrade measurement accuracy.

• Power Sequencing: Ensure the external 24V DC power supply for the analog loop is stabilized before the PLC starts its measurement cycle to avoid initial error readings.

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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