Control System Configuration And Principles; Control System Configuration - Omron CS1W-MCH71 Operation Manual

Control System Configuration and Principles

Override (Real-time Speed
Change)
Backlash Correction
Unlimited Feeding
Debugging
Data Storage
Arithmetical Operation
Command
Zones (Supported For unit
version 3.0 and later.)
1-4 Control System Configuration and Principles
1-4-1

Control System Configuration

Semi-closed Loop System
Motion controller
Changes the speed during PTP, linear interpolation, or circular interpolation
operations.
Compensates errors caused by faulty meshing in the mechanical system.
Controls axes such as turntables and conveyors that are fed only in one direc-
tion unlimitedly.
It is possible to execute just one line of a program through single block opera-
tion. It is also possible to run programs without operating the machine system
through Machine Lock.
Backups and restores data using PLC memory cards.
Performs Simple arithmetic operation, Functions, and Logic Operations.
• A zone bit turns ON when any variable (including feedback present posi-
tion, feedback speed, etc.) is within the set range, and OFF when outside
of the set range.
• A maximum of 32 zones can be set.
The servo system used by and the internal operations of the MC Unit are
briefly described below.
The MC unit uses the servo system called the semi-closed loop system.
This system is designed to detect actual machine travel distance for a com-
mand value using rotations of the motor and the detected value is fed back to
the MC unit. The unit computes and compensates the error between the com-
mand value and actual travel distance to make it zero.
Servomotor
Command
Actual travel
Encoder
distance
The semi-closed loop system is the mainstream in modern servo systems
applied to positioning devices for industrial applications.
Table
Decelerator
Section 1-4
Ball screw
11