Overview
Motion Controllers in the MC-X628 series are ISA compatible and built around the
National Semiconductor LM-628 Motion Control Processor. The MC-X628 provides a
+/- 10 volt analog motor command using a 12 bit precision DAC.
The MC-3628 provides two or three axes of closed loop independant axis motion
control depending on configuration. With additional software, it supports multi-axis
coordinated motion control. Eight optically isolated digital inputs and eight TTL level
digital inputs are provided. In addition, eight open collector TTL level digital
outputs are provided.
All that is required to construct a multi axis closed loop servo system is an IBM compatible
computer with an available ISA slot, an MC-X628 with optional cable and connector board,
the appropriate number of servo motor power amplifiers, servo motors with incremental
encoder and a motor power supply.
These componenets and their basic interconnection for a three axis application
are shown in the figure below.
The MC-X628 series has 32 bit resolution for position, velocity, and acceleration.
This allows small variations in velocity and acceleration to be programmed for
effective trajectory control for contouring at high speeds. Compensation filtering
is accomplished with a second order Proportional, Integral, Derivative (PID)
filter with 16 bit coefficients. This level of PID filter resolution permits
precise servo tuning. The integral term provides for accurate positioning with
zero steady state position error. Additionally the the MC-X628 series provides an
industrial quality incremental encoder interface with differential or TTL level
inputs and noise filtering. A generous number of uncommited digital I/O is provided
for sensing limit switches, for control of amplifier enables or other user
functions.
Features
Whats included
The MC-3628 package includes the MC-3628 3-axis motion controller
board and a CD with instruction manuals and software for the MC-3628.
Options
Options include cables (MC-3628CA), a connector board which
provides for screw terminal connections (MC-3628CB), and software
for multi-axis control (MA-3628SW).
Data Sheet Download
MC-3628_Data_Sheet.pdf
Copyright Servomotive September 2000