Chapter 8 Hardware & Software Protection

Introduction

The DMC-3425 provides several hardware and software features to check for error conditions and to inhibit the motor on error. These features help protect the system components from damage.

WARNING: Machinery in motion can be dangerous! It is the responsibility of the user to design effective error handling and safety protection as part of the machine. Since the DMC-3425 is an integral part of the machine, the engineer should design his overall system with protection against a possible component failure on the DMC-3425. Galil shall not be liable or responsible for any incidental or consequential damages.

Hardware Protection

The DMC-3425 includes hardware input and output protection lines for error and mechanical limit conditions. These include:

Output Protection Lines

Amp Enable - This signal goes low when the motor off command is given, when the position error exceeds the value specified by the Error Limit (ER) command, or when an off-on-error condition is enabled (OE1) and the abort command is given. Each axis amplifier has a separate enable line. This signal also goes low when the watch-dog timer is activated. Note: The standard configuration of the AEN signal is TTL active low. Both the polarity and the amplitude can be changed if you are using the ICM-1460 interface board. To make these changes, see section entitled ‘Amplifier Interface’.

Note: There is only one amplifier enable signal for the DMC-3425. Therefore, both amplifiers will be controlled by the same enable output.

Error Output - The error output is a TTL signal that indicates an error condition in the controller. This signal is available on the interconnect module as ERROR. When the error signal is low, this indicates one of the following error conditions:

1.At least one axis has a position error greater than the error limit. The error limit is set by using the command ER.

2.The reset line on the controller is held low or is being affected by noise.

3.There is a failure on the controller and the processor is resetting itself.

DMC-3425

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Galil DMC-3425 user manual Hardware Protection, Output Protection Lines
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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.
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