Positioning Control; Features Of Qd77Ms; Wide Variety Of Control Methods; Large Amount Of Data - Mitsubishi Electric QD77MS User Manual

1.1 Positioning control

1.1.1 Features of QD77MS

The QD77MS has the following features.
(1) High-speed starting time
High-speed starting time "0.88ms" (QD77MS4 use) during positioning control is
achieved.
(2) Wide variety of positioning control functions
The main functions (such as OPR control, positioning control and manual
control) which are required for any positioning system and the sub functions
which limit and add functions to those controls are supported.
(a) Enhanced OPR control
1) Additional features of OPR control
Six machine OPR methods are provided: one near-point dog method,
two count methods, one data set method, one scale origin signal
detection method and one driver OPR method. Select an applicable
method according to the system.
2) OPR retry function
The OPR retry function is provided so that the machine OPR control
can be performed from any position, regardless of the machine stop
position when the system is powered on.
(b) Wide variety of control methods
Positioning controls, such as position control, speed control, speed-position
switching control, position-speed switching control, and other controls, are
provided.
1) Independent control of each axis
Controls, such as position control and speed control, can be performed
independently for each axis at any given timing.
2) Interpolation control
Interpolation controls using multiple axes can be performed.
(2- to 4-axis linear interpolation control, 2-axis circular interpolation
control, 2- to 4-axis speed control, etc.)
3) Speed-torque control
Speed control and torque control not including the position loop can be
performed.
(c) Large amount of data
Up to 600 positioning data (combinations of data, such as control method,
positioning address, and command speed) per axis can be set.
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Chapter 1 Product Outline