89
  Appendix E—STO function
POWERXL SERIES VFDS   MN040060EN—September 2020   www.eaton.com
Figure 33.  Thermistor STO dry contact wiring diagram.
Requirements of proof test
This device shall be subjected to a proof test at least once 
every 20 years.  Please contact the factory or your local 
Eaton sales representative.