Chapter 1 Overview; Introduction; Overview Of Motor Types - Galil Motion Control DMC-18 2 Series User Manual

Chapter 1 Overview

Introduction

The DMC-18x2 series motion control cards install directly into the PCI bus. This controller series
offers many enhanced features including high speed communications, non-volatile program memory,
faster encoder speeds, and improved cabling for EMI reduction.
The DMC-18x2 provides a high speed FIFO for sending and receiving commands. This PCI bus
motion controller allows for high speed servo control up to 12 million encoder counts/sec and step
motor control up to 3 million steps per second. Sample rates as low as 62.5μsec per axis are available.
A 2 meg Flash EEPROM provides non-volatile memory for storing application programs, parameters,
arrays and firmware. New firmware revisions are easily upgraded in the field without removing the
controller from the PC.
The DMC-18x2 is available with up to four axes on a single PCI card. The DMC-1812, 1822, 1832,
and 1842, one thru four axes controllers, are on a single 4.23" x 9" card.
Designed to solve complex motion problems, the DMC-18x2 can be used for applications involving
jogging, point-to-point positioning, vector positioning, electronic gearing, multiple move sequences,
and contouring. The controller eliminates jerk with programmable acceleration, deceleration, and
profile smoothing. For seamless following of complex contours, the DMC-18x2 provides continuous
vector feed of an infinite number of linear and arc segments. The controller also features electronic
gearing with multiple master axes as well as gantry mode operation.
For synchronization with outside events, the DMC-18x2 provides uncommitted I/O, including 8 digital
inputs, and 8 digital outputs. Committed digital inputs are provided for forward and reverse limits,
abort, home, and definable input interrupts. Commands can be sent in either Binary or ASCII.
Additional software is available to autotune, view trajectories on a PC screen, translate CAD.DXF files
into motion, and create powerful, application-specific operator interfaces with Visual Basic, Labview
and others. Drivers for DOS, Windows 3.1, 95, 98, 98SE, ME, NT4.0, 2000, XP, QNX, and Linux are
available.

Overview of Motor Types

The DMC-18x2 can provide the following types of motor control:
1. Standard servo motors with +/- 10 volt or PWM command signals
2. Brushless servo motors with sinusoidal commutation
3. Step motors with step and direction signals
4. Other actuators such as hydraulics - For more information, contact Galil.
The user can configure each axis for any combination of motor types, providing maximum flexibility.
DMC-18x2
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Chapter 1 Overview ● 1