Q38BL MITSUBISHI

Q38BL MITSUBISHI Analog Output Modules

Product  Description：

Mitsubishi Electric Analog Output Modules are high-performance expansion units for the MELSEC PLC series designed to convert digital values from the controller's CPU into continuous analog signals. These modules act as the "hands" of the automation system, providing precise control over variable-speed drives, proportional valves, and other actuators. By translating mathematical calculations into physical voltages or currents, they enable smooth, infinite adjustment of mechanical and thermal processes rather than simple on-off switching.

Product Parameters

The technical profile of these modules focuses on output precision, response speed, and compatibility with industrial actuators:

• Output Signal Ranges: Fully configurable for voltage outputs such as 0-5V DC, 1-5V DC, and -10 to 10V DC, or current outputs including 0-20mA and 4-20mA DC.

• Digital-to-Analog Resolution: High-resolution conversion typically at 16-bit (producing a digital scale of -32768 to 32767), allowing for extremely fine increments in output levels.

• Channel Density: Available in configurations of 2, 4, 8, or 16 channels per module to manage multiple actuators from a single slot.

• Conversion Speed: Rapid response times often ranging from 10 microseconds to 1 millisecond per channel, supporting high-speed control loops.

• Accuracy and Linearity: Maximum error rates are generally kept within ±0.1 percent to ±0.3 percent of the full scale at room temperature.

• Load Resistance: Voltage outputs support loads of 1k Ohm or higher, while current outputs typically drive loads up to 600 Ohms.

Product Advantages

Mitsubishi Analog Output Modules are engineered to provide superior control stability and ease of integration:

• Smooth Control Profiles: The high-resolution output eliminates "stepping" effects, ensuring that motors accelerate smoothly and valves position themselves without jitter.

• Integrated Scaling Functions: Users can program the module to accept real-world units (such as 0-100 percent or 0-1500 RPM) directly, with the module handling the mathematical conversion to the corresponding voltage or current.

• Output Warning and Limiting: Includes safety features such as output limits to prevent actuators from exceeding physical boundaries and rate-of-change limits to prevent sudden mechanical shocks.

• Robust Isolation: Built-in electrical isolation between the internal logic and the output terminals protects the PLC backplane from external surges and prevents ground loop interference.

• Synchronous Output: Advanced modules support synchronized updates across all channels, which is vital for applications requiring coordinated movement of multiple actuators.

Product Applications

These modules are essential for any industrial process requiring variable modulation:

• Speed Control: Providing the reference signal for Variable Frequency Drives (VFDs) and servo amplifiers to control motor velocity and torque.

• Flow and Pressure Regulation: Driving proportional valves in hydraulic or pneumatic systems to maintain precise pressure levels or chemical flow rates.

• Temperature Modulation: Controlling the power output of thyristor-based heaters to maintain steady temperatures in industrial furnaces or plastic extruders.

• Light and Power Dimming: Managing the intensity of industrial lighting or the power levels in specialized laboratory equipment.

• Analog Gauges and Displays: Sending signals to remote analog meters or chart recorders for real-time visual monitoring of system variables.

Important Precautions

To maintain signal integrity and ensure the safety of connected equipment, the following guidelines must be observed:

• Shielding and Routing: Use shielded twisted-pair cables for all analog output lines. To prevent electromagnetic interference, route these cables in separate conduits away from high-voltage AC power lines.

• Grounding Strategy: The shield should generally be connected to the ground terminal on the PLC side only. Multiple ground points can create ground loops that distort the analog signal.

• Power Sequencing: Ensure that the external power supply for the analog module is energized before or at the same time as the PLC CPU. Abruptly losing power to the module while the CPU is active can cause unpredictable output states.

• External Safety Interlocks: While the module has internal limits, always implement external emergency stop circuits that physically disconnect the power to actuators in the event of a controller failure.

• Handling Unused Channels: To prevent unwanted signal radiation or internal errors, configure unused channels as "Disabled" in the module parameters within the engineering software.

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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