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Appendix
NX-series Safety Control Unit User’s Manual (Z930)
A-3 Application Examples
A
A-3-12 Multi-axis Servo Drives (STO)
Precautions for Correct Use
• Test the functionality every six months to detect faults in the safety input circuits and EDM
output circuits of the servo drives.
• The customer is responsible for attaining conformance of the entire system to standards.
• To detect electrical and mechanical failures, use a combination of redundant semiconductor
output contacts and redundant safety inputs for the servo drives.
Program
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