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Chapter 8 Hardware & Software
Protection
Introduction
The CDS-3310 provides several hardware and software features to check for error conditions and to
inhibit the motor on error. These features help protect the various system components from damage.
*Note: *Do not "hot swap" the motor power connections. If the amp is enabled when the motor
connector is connected or disconnected, damage to the amplifier can occur. Galil recommends
powering the controller and amplifier down before changing the connector.
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 CDS-3310 is an
integral part of the machine, the engineer should design his overall system with protection against
a possible component failure on the CDS-3310. Galil shall not be liable or responsible for any
incidental or consequential damages.
Hardware Protection
The CDS-3310 includes hardware input and output protection lines for various error and mechanical
limit conditions. These include:
Output Protection Lines
Error Output - The error output is a TTL signal which indicates on error condition in the
58 • Chapter 8 Hardware & Software Protection
controller. This signal is available on the interconnect module as ERROR. When the error
signal is low, this indicates on 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.
4. There is a failure with the output IC which drives the error signal.
CDS-3310
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