DMC-3425 Functional Elements, Microcomputer Section

DMC-3425 Functional Elements

The DMC-3425 circuitry can be divided into the following functional groups as shown in Figure 1.1 and discussed below.

WATCHDOG TIMER

ETHERNET

RS-232

68331

MICROCOMPUTER WITH

1 Meg RAM

4 Meg FLASH EEPROM

HIGH-SPEED

MOTOR/ENCODER

INTERFACE

ISOLATED LIMITS AND HOME INPUTS

MAIN ENCODERS AUXILIARY ENCODERS

+/- 10 VOLT OUTPUT FOR SERVO MOTORS PULSE/DIRECTION OUTPUT FOR STEP MOTORS

I/O INTERFACE

HIGH SPEED ENCODER COMPARE OUTPUT

2UNCOMMITTED ANALOG INPUTS

3 PROGRAMMABLE,	3 PROGRAMMABLE
INPUTS	OUTPUTS

HIGH-SPEED LATCH FOR EACH AXIS

Figure 1.1 - DMC-3425 Functional Elements

Microcomputer Section

The main processing unit of the DMC-3425 is a specialized 32-bit Motorola 68331 Series Microcomputer with 1 Meg RAM and 4 Meg Flash EEPROM. The RAM provides memory for variables, array elements and application programs. The flash EEPROM provides non-volatile storage of variables, programs, and arrays. It also contains the DMC-3425 firmware.

Motor Interface

Galil’s GL-1800 custom, sub-micron gate array performs quadrature decoding of each encoder at up to 12 MHz. For standard servo operation, the controller generates a +/-10 Volt analog signal (16 Bit DAC). For sinusoidal commutation operation, the controller uses two DACs to generate two +/-10Volt analog signals. For stepper motor operation, the controller generates a step and direction signal.

Communication

The communication interface with the DMC-3425 consists of one RS-232 port (19.2 kbaud) and one 10base-T Ethernet port.

4 • Chapter 1 Overview

DMC-3425

DMC-3425 specifications

The Galil DMC-3425 is a sophisticated motion controller known for its versatility and high performance in various industrial applications. Designed primarily for multi-axis control, it is well-suited for robotics, CNC machinery, and automated manufacturing systems.

One of the standout features of the DMC-3425 is its ability to control up to 32 axes simultaneously, providing unparalleled flexibility for complex motion tasks. This capability is enhanced by its advanced motion algorithms that ensure smooth and precise movements, essential for high-quality manufacturing and assembly processes. The controller supports a variety of motor types, including servo, stepper, and brushless motors, making it compatible with a wide range of existing equipment.

In terms of connectivity, the DMC-3425 offers an extensive selection of communication options. It supports Ethernet, RS-232, and RS-485 interfaces, allowing for seamless integration with various industrial networks, including EtherCAT and CANopen. This connectivity is vital for real-time data exchange and remote monitoring, enhancing overall system efficiency.

The controller is powered by Galil's innovative software architecture, which includes the DMC programming language. This user-friendly language enables engineers to create complex motion profiles easily, with support for trajectory generation, coordinate transformations, and PID control. The DMC-3425 also features built-in commands for motion profiling, including linear and circular interpolation, allowing for sophisticated path planning.

Moreover, the DMC-3425 comes equipped with an integrated programming environment that facilitates rapid application development. Users can simulate motion profiles before implementation, reducing downtime and minimizing errors. This environment is designed for quick learning, making it accessible even for those new to motion control.

Additionally, the Galil DMC-3425 features a robust safety architecture. It includes over-temperature detection, emergency stop inputs, and configurable limits for position and speed, ensuring safe operation in various environments.

Overall, the Galil DMC-3425 is a powerful and flexible motion controller that combines advanced technologies with user-friendly design. Its ability to handle multiple axes, extensive connectivity options, and comprehensive programming environment make it a top choice for manufacturers seeking to enhance automation and improve productivity in their operations.

Galil DMC-3425 Functional Elements, Microcomputer Section, Motor Interface, Communication

Models: DMC-3425