Factory Automation

Controllers MELSEC-Q Series

Product features -Simple Motion/Positioning-

    Countless applications are possible <sup>LD77MS□ </sup>

    A variety of control types including positioning control, speed-torque control, synchronous control and electronic cam control can be implemented easily with simple parameter settings and a sequence program.

    Positioning control

    • Support for a multitude of applications thanks to a wide variety of control formats including linear interpolation control (up to 4 axes), 2-axis circular interpolation control, fixed feed control and continuous orbit control.
    • Use a sequence program to set the positioning address, speed, etc. for easy automatic operation.
    • Quickly implement powerful auxiliary functions such as step operation, target position change, M codes, and the skip function.
    XY table Sealant application
    • 2-axis linear interpolation
    • 2-axis circular interpolation
    • 3-axis linear interpolation
    • Continuous orbit control
    • Continuous orbit control
    • High-speed, high-accuracy orbit calculation
    • Linear/circular interpolation

    Speed-torque control

    • Tension control applications such as winding and rewinding are supported.
    • Switch from positioning control, to speed-torque control, and back to positioning control.
      Because the present location is tracked even in speed-torque control mode, it is possible to maintain the current absolute position when returning to positioning control.

    Synchronous control and electronic cam control

    • Electronic cam control may be used alone or combined with synchronous control.

    Example application for electronic cam control:

    To create a movement path around a workpiece using positioning control, axis 2 waits for axis 1 to complete the move from P1 to P2 before it begins moving from P2 to P3. By using electronic cam control, axis 2 does not need to wait for axis 1 to complete its movement and the in position time can be shortened.

    Many functions in a compact design <sup>LD77MS□ </sup>

    Use a synchronous encoder with synchronous control

    • Input pulses from a synchronous encoder can be used to perform synchronous control and electronic cam control.
    • The incremental synchronous encoder can be used by using the LD77MS built-in interface. An option unit is not required.
    • To further improve the synchronization accuracy, the phase compensation function, designed to compensate for synchronous encoder delays, can be used.

    Standard mark detection function

    • The built-in mark detection signal interface allows these units to be used in packaging systems for example, without additional option modules.

    Automatic cam data generation for rotary cutter

    • Complicated cam data for rotary cutters can be automatically generated just by specifying a few parameters like the sheet length and synchronization width.

    Perfect synchronous control is easy to achieve <sup>LD77MS□ </sup>

    Replace mechanical gears, shafts, speed change gears, cams, etc. and generate synchronous control operations using software.

    • Complicated programs are unnecessary for synchronous control because it can be implemented easily using parameter settings.
    • Start and stop synchronous control for each axis.
      Use the synchronous control axis and positioning control axis together.
    • Convey the travel value of main shaft to the output axis via the clutch.

    Synchronous Control Parameter Settings

    Cam control made simple <sup>LD77MS□ </sup>

    Create cam data patterns easily.

    • Create cam profiles unrestricted by existing concepts of electronic cam control.
    • Change the acceleration, speed, stroke, and jerk while simultaneously seeing how it effects the profile.
    • Easily check created cam data by viewing them as thumbnails.
    • Import and export cam data in CSV format.

    Cam Data

    Cam Data List

    Simplified debugging and commissioning <sup>LD77MS□ </sup>

    Digital oscilloscope function

    • Collection of data from the simple motion module is synchronized with the operation cycle and waveform displays to facilitate an efficient start up.
    • The assistant function explains each step.
    • Use the purpose-based probe setting to easily set frequently-viewed data.
    • Sample 16CH word and 16CH bit data and display 8CH words and 8CH bits in real time.

    Monitor and test functions

    • Complete the system installation and perform operational checks easily using powerful monitor and test functions.
    • Select items to be displayed on the monitor using a wealth of information monitoring options.
    • The test function can be used to check basic operations without a sequence program.