GSK DA98D, User Manual

Page: 12 / 79

DA98D User Manual
1
Chapter One Overview
1.1 Product Introduction
The AC servo technology has undergone a rapid development since the beginning of 1990s,
during which period this technology has been increasingly mature and its performance has been
constantly improved. Now this technology has been widely applied to such automatic fields as
CNC machine tools, printing and packing machines, textile machinery and automatic production
lines.
DA98D AC servo drive unit (all called full digital AC servo drive device) is a new generation of
full digital AC servo drive unit produced by our company. This product includes two control modes
of speed and position. It can be matched with various open-loop and closed-loop control systems
and has been widely applied to CNC machine tools and
automatization industry. Internationally advanced
special-purpose chip for motor control
(TMS320LF2407A DSP), complex programmable logic
display (CPLD) and MITSUBISHI intelligent power
module (IPM) are adopted inside the servo, so it has
such advantages as high degree of integration,
compact, perfect protection and good reliability. The
optimal PID is employed to achieve PWM control.
Performance of this product has reached
internationally advanced level among its peers at home
and aboard.
Compared with stepper drive, DA98D AC servo unit has the following strong points:
z Avoid out-of-Synchronization Phenomena
Servo motor has encoder on itself and the position signal will be fed back to the servo drive
unit, forming a semi-closed loop system together with the open-loop position controller.
z Wide speed ratio and constant torque
Speed ration is 1:5000, with stable torque characteristics from low speed to high speed.
z High speed and precision
The maximal rotation rate of servo motor can reach 3000r/min, with a rotary positioning
precision 1/10000r.
Notes: maximal rotatation rate is not the same with different models of servo motor.
z Easy and flexible control
Through parameter changing, working methods and characteristics of the servo drive unit
can be properly set to comply with different requirements.
open-loop control
stepper motor
controller
positioning command