2 • Chapter 1 Overview DMC-1500
Overview of Motor Types
The DMC-1500 can provide the following types of motor control:
Standard servo motors with +/- 10 volt command signals
Step motors with step and direction signals
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.
Standard Servo Motors with +/- 10 Volt Command Signal
The DMC-1500 achieves superior precision through use of a 16-bit motor command output DAC and
a sophisticated PID filter that features velocity and acceleration feedforward, an extra pole filter and
integration limits.
The controller is configured by the factory for standard servo motor operation. In this configuration,
the controller provides an analog signal (+/- 10Volt) to connect to a servo amplifier. This connection
is described in Chapter 2.
Stepper Motor with Step and Direction Signals
The DMC-1500 can control stepper motors. In this mode, the controller provides two signals to
connect to the stepper motor: Step and Direction. For stepper motor operation, the controller does not
require an encoder and operates the stepper motor in an open loop fashion. Chapter 2 describes the
proper connection and procedure for using stepper motors.
DMC-1500 Functional Elements
The DMC-1500 circuitry can be divided into the following functional groups as shown in Figure 1.1
and discussed in the following.
Figure 1.1 - DMC-1500 Functional Elements
6834
Microcompute
256K
64K
128K EEPROM
I/
Interfac
GL-
4-
Motor/Encode
Interfac
RS-232 / RS-422
Communication
80
Watch
Timer
8 TTL
8 Digital
8 Analog
To
To
Fro
Limit
Fro
Encoder