Hoops123 Posted November 16, 2022 Report Share Posted November 16, 2022 Hello everyone, I'm working on an application using a unitronics servo and drive for the first time. I need the motor to stop every time the light curtain is broken as a safety requirement. This will happen several times per hour As these drives don't have STO I would have to use a safety relay to interrupt the supply to the motor. Having just read the manual it says: "Frequently turning the power ON and OFF causes the internal circuit elements to deteriorate, resulting in unexpected problems. Always start or stop the Servo motor by using reference pulses." Obviously I'm going to be violating this by using the safety relay to interrupt power. Has anyone else encountered this when implementing safety to theses motors? Would be great to hear from other people using these servo's as I will probably have more question over the next few weeks. Thanks Quote Link to comment Share on other sites More sharing options...
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