A7GT-J71AP23 MITSUBISHI

A7GT-J71AP23 MITSUBISHI Analog Output Modules

Product  Description：

Mitsubishi Electric Analog Output Modules are high-performance expansion units for the MELSEC PLC series that convert digital values from the CPU into continuous analog signals. These modules are the "acting" interface of a control system, providing the necessary signals to control the speed of motors, the position of valves, or the intensity of heating elements. By delivering precise voltage or current increments, they allow for smooth, infinitely variable control rather than simple on/off switching.

Product Parameters

The technical profile of these modules focuses on the precision and speed of the Digital-to-Analog (D/A) conversion process:

• Output Signal Ranges: Supports standard voltage outputs (e.g., 0-5V DC, 1-5V DC, -10 to 10V DC) and current outputs (e.g., 0-20mA, 4-20mA DC).

• Digital Resolution: High-resolution conversion typically at 16-bit, which translates to a digital range of -32000 to 32000 or 0 to 64000 for extremely fine control.

• Number of Channels: Available in various configurations, commonly offering 2, 4, or 8 isolated output channels per module.

• Conversion Speed: Capable of high-speed updates, with throughput rates as fast as 10 microseconds to 1 millisecond per channel.

• Load Impedance: Voltage outputs typically support loads of 1k Ohm or higher, while current outputs can drive loops with a resistance up to 600 Ohms.

• Accuracy: Features a high degree of precision, with a combined ambient temperature error rate often as low as ±0.1 percent of the full scale.

Product Advantages

Mitsubishi Analog Output Modules are engineered for high-fidelity signal reproduction and system safety:

• Smooth Command Execution: The high resolution ensures that actuators move without "stepping" or vibration, which is critical for sensitive mechanical processes and high-quality finishes.

• Synchronization and Linearity: Optimized for linear output across the entire scale, ensuring that a 50 percent digital value consistently results in exactly 50 percent of the analog signal.

• Integrated Safety Features: Includes "Output Hold/Clear" settings, which allow the user to define whether the module should maintain its last value or drop to zero if the PLC CPU stops or communication is lost.

• Channel-to-Channel Isolation: High-grade electrical isolation prevents interference between different output loops and protects the internal PLC circuitry from external electrical faults.

• Easy Calibration: Users can perform offset and gain adjustments via software, allowing the output to be perfectly tuned to the specific requirements of the connected field device.

Product Applications

These modules are essential for any automated process requiring variable control:

• Inverter and Drive Control: Sending frequency setpoints to Variable Frequency Drives (VFDs) to manage the speed of pumps, fans, and conveyor belts.

• Proportional Valve Regulation: Controlling the precise opening of hydraulic or pneumatic valves to manage fluid pressure and flow rates in chemical processing.

• Heater Control: Interfacing with power controllers to adjust the intensity of electric heaters based on real-time temperature feedback.

• Position Control: Providing setpoint signals to servo amplifiers or actuators for precise mechanical positioning in assembly lines.

• Signal Retransmission: Sending processed data from the PLC to external instruments, such as chart recorders or analog gauges for monitoring.

Important Precautions

To prevent hardware damage and ensure signal integrity, the following operational rules must be followed:

• Wiring Separation: Analog output signal lines must be kept separate from AC power lines and high-voltage cables to prevent electromagnetic induction from causing signal fluctuations.

• Shielding Requirements: Use shielded twisted-pair cables for all analog connections. Connect the shield to the ground terminal on the PLC side only to avoid creating ground loops.

• External Power Supply: Many analog output modules require an external 24V DC power supply for the output drive stage. Ensure this power is stable and free from excessive noise.

• Short-Circuit Protection: While many modules have built-in protection, avoid short-circuiting current output terminals, as this can lead to excessive heat and potential module fatigue.

• Proper Startup Sequence: When powering the system, ensure the PLC and the external power for the analog module are energized before the field devices to prevent unpredictable actuator movement during startup.

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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