Since the introduction of G4 input/output modules in the mid-1980s, Opto 22 has sold millions. And 20 years later, these remain some of the company’s best-selling products. Like most Opto 22 modules, G4’s are guaranteed for life. In order to make this guarantee, the company must submit the modules to rigorous testing before they’re shipped to customers.

The G4 Handler is the machine used to perform these tests. When the 20-year-old servos on the G4 Handler needed to be replaced, an economical replacement could not be found. Instead, the G4 Handler’s servo motors were replaced with stepper motors.

This case study describes how the SNAP PAC System Motion Control Subsystem was used with the new stepper motors to control module testing and gather test data.

For more information click PDF.

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