MITSUBISHI A1S68DAV

Description

Product Overview

The MITSUBISHI A1S68DAV is a digital-analog hybrid output module for the Mitsubishi A Series Programmable Logic Controller (PLC). This specialized module provides both digital and analog output capabilities in a single unit, offering a compact and integrated solution for applications requiring both discrete control and analog signal generation. The MITSUBISHI A1S68DAV is designed to interface directly with devices such as variable frequency drives, proportional valves, and display units that require both on/off commands and variable control signals.

Key Product Parameters

• Product Type: Digital/Analog Hybrid Output Module

• Compatible System: Mitsubishi A Series PLC (A1S, A2S, A3A, etc.)

• Output Configuration:

  • Digital Outputs: 8 points (typically transistor outputs, e.g., 12/24 VDC).

  • Analog Outputs: 2 channels, typically voltage output (e.g., 0-10 VDC).

• Digital Output Specifications:

  • Type: Sinking (NPN common) or Sourcing (PNP common), depending on the specific module variant.

  • Rated Load Voltage: 12/24 VDC.

  • Maximum Load Current: Typically 0.1A or 0.5A per point.

• Analog Output Specifications:

  • Output Range: 0 to 10 VDC (common standard).

  • Resolution: 12-bit (4096 steps), providing good precision for control.

  • Accuracy: Within a specified percentage of full scale (e.g., ±1%).

• Isolation: Digital and analog circuits are isolated from each other and from the PLC bus.

• Connection: Uses a removable terminal block for field wiring.

Advantages and Core Features

The primary advantage of the MITSUBISHI A1S68DAV is its space-saving, integrated design. By combining 8 discrete outputs and 2 analog outputs in one module slot, it reduces the hardware footprint in the PLC rack, which is particularly beneficial in compact control panels. This integration simplifies system design, wiring, and maintenance for machines that require both functions, such as a system controlling a motor starter (digital) and its speed reference (analog). The module is engineered for reliable performance and seamless integration within the A Series platform, with configuration performed through Mitsubishi’s GX Developer or GX Works2 software.

Application Scenarios

This hybrid module is ideal for applications requiring coordinated digital and analog control from a single point:

• Simple Conveyor Control: Using digital outputs to start/stop motors and an analog output to control a variable speed drive for belt speed.

• Pump Control Systems: Starting a pump (digital) and modulating a control valve (via analog signal to an I/P converter) based on level or pressure.

• Temperature Control Units: Enabling a heater (digital) and providing a 0-10V signal to a proportional valve for cooling water flow.

• Machine Tools: Controlling auxiliary devices (clamp, lubricator) with digital outputs and sending speed reference signals to a spindle drive with analog outputs.

• Packaging Machines: Operating solenoids (digital) and controlling the position of a servo via an analog speed command.

Comparison with Competing Products

Competing products are typically separate digital and analog output modules from other PLC manufacturers like Siemens (Simatic S7-300), Allen-Bradley (SLC 500), or Omron. The MITSUBISHI A1S68DAV stands out by offering a combined functionality that can reduce module count and cost for specific applications. Compared to using two separate modules, the A1S68DAV saves a slot in the PLC base unit. However, its fixed configuration (8D/2A) is less flexible than choosing independent modules with customizable channel counts. It represents a practical, application-focused solution within the A Series ecosystem.

Selection Guide and Important Notes

Selecting the MITSUBISHI A1S68DAV is ideal when your application’s I/O requirements closely match its 8 digital and 2 analog output configuration. Verify compatibility with your A Series CPU and base unit.

Important Precautions:

• Load Compatibility: Ensure the connected devices match the module’s specifications. Do not exceed the digital output’s current rating or connect an inductive load without appropriate protection (flyback diode). Ensure analog devices accept a 0-10V input.

• Wiring Separation: Keep wiring for digital outputs (which can be noisy) separate from the analog output cables to prevent electrical noise from interfering with the analog signal.

• Power Supply: The digital outputs require an external 24 VDC power supply for the field devices. The analog output power is derived from the module’s internal logic supply.

• Configuration and Scaling: The analog outputs require proper configuration in the PLC programming software. You must set the data format (e.g., 0-4000 corresponds to 0-10V) and scale your logic values accordingly in the user program.

• Grounding: Follow proper grounding guidelines for both the digital common terminals and the analog signal ground to ensure stability and noise immunity.

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