Allen-Bradley PowerFlex 755 User Manual page 139

Standard I/O Mode – Configuration, Programming, and Operation Chapter 6
Figure 55 - Safety Output Example
The PowerFlex 755 S4 safety actions can be configured based on the required
reaction to various machine requirements. In this instance, the STO request is
executed by the PowerFlex 755 in causing a disable and coast reaction.
However, the request to the SS1 (requested by the GuardLogix Safety Task) is
executed by the GuardLogix Standard Task with the use of pass-through tags.
In this case, the Stop command is used to control stop the motor, as shown by
the programming example.
Figure 56 - Safety Output Programming Example
The Safe Limited Speed (and any other safe monitoring instruction requests
besides STO, SS1, and SS2) are handled with the use of pass-through tags in
the GuardLogix Standard Task. The GuardLogix Safety Task uses pass-
Rockwell Automation Publication 750-UM005A-EN-P - October 2018 139