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MELSEC-Q Series

Positioning

A large selection of motion control solutions are available to fit any motion application.

High-speed, accurate positioning control

Various types of motion control are supported including 2 to 4-axis linear interpolation, 2-axis circular interpolation, speed control, speed/position changeover, path control and constant speed control. Making settings (including positioning data), monitoring, and debugging is made much easier using GX Works2's built-in intelligent function module tools or the stand-alone tool, GX Configurator-QP. For servo control, Q Series leverages the benefits of SSCNET, a Mitsubishi high performance motion control network. This allows Mitsubishi intelligent digital servos to be connected by a simple daisy chain cable that reduces cost and increases performance.

System configuration example

●Positioning module Open collector pulse train output type QD75P1N QD75P2N QD75P4N

●Positioning module Differential driver pulse train output type QD75D1N QD75D2N QD75D4N

For compatibility with the widest range of motion hardware, both open collector and differential driver type positioning modules are available. Transmission of high-speed pulses, up to 4 Mpps, to a servo amplifier can be made reliably up to 10 meters away. These pulse train output positioning modules can provide a high level of speed and accuracy for practically any application.

  QD75P□N QD75D□N
Pulse train output format Open collector output Differential drive output
Max. output pulse 200 kpps 4 Mpps
Max. connection distance to drive unit 2 m 10 m
Control system PTP (Point To Point) control, path control (linear arc, and helical can be set), speed control, speed-position switching control, position-speed switching control
Starting time*2 1-axis linear control 1.5 ms
1-axis speed control 1.5 ms
2-axis linear interpolation control 1.5 ms
2-axis circular interpolation control 2.0 ms
2-axis speed control 1.5 ms
3-axis linear interpolation control 1.7 ms
3-axis helical interpolation control 2.6 ms
3-axis speed control 1.7 ms
4-axis linear interpolation control 1.8 ms
4-axis speed control 1.8 ms

*2: Using the pre-reading start function, the actual starting time can be shortened.

The ideal solution for simple multi-axis positioning

These modules are ideal for high-speed linear positioning control in a multi-axis system.
Easily satisfying the requirements for simple positioning control applications, these modules include functions, such as positioning control, speed control and variable positioning control.

System configuration example

●Positioning module Open collector pulse train output type QD70P4 QD70P8

●Positioning module Differential driver pulse train output type QD70D4 QD70D8

These modules are a great match for stepper motor control. Acceleration and deceleration can be performed smoothly with very fine changes in speed. “Fast start processing” is a basic feature that allows for a single axis positioning start time of just 0.1 ms.

Model QD70P□ QD70D□
Pulse train output format Open collector output Differential drive output
Max. output pulse 200 kpps 4 Mpps
Max. distance between stations 2 m 10 m
Control system PTP (Point To Point) control, path control (linear only), speed-position switching control
Starting time 1-axis start 0.1 ms
4-axis start*3 0.2 ms
8-axis start*3 0.4 ms

*3: When START signal switches ON within 1 scan. There are no start delays between axes.

Lineup

Number of axes Specialized functionality type Simple control and fast-response type
Open collector
output
Differential drive
output
Open collector
output
Differential drive
output
1 QD75P1N QD75D1N - -
2 QD75P2N QD75D2N - -
3 - - - -
4 QD75P4N QD75D4N QD70P4 QD70D4
8 - - QD70P8 QD70D8