6-38
Safe Torque Off
890CS Common Bus Supply - Frames B & D; 890CD Common Bus Drive and 890SD Standalone Drive - Frames E & F
User Output Check:
STO test
Comprehensive Check, Activity
Expected reaction and effect
19
Remove connections to X11/01 and X11/03 within 1 second of
each other.
X11/05 and /06 must be ON.
20
Try to restart the drive.
Wait for at least 10 seconds with the run command active, then
remove it.
Drive must not start while run command is
given.
Drive must report STO trip immediately.
X11/05 and /06 must remain ON.
21
Reconnect X11/01 and X11/03 to 24V.
X11/05 and /06 must turn OFF immediately.
22
Try to restart the drive.
STO trip must clear.
The drive must restart at SPT1.
23
Stop the drive.
Test is complete.
Drive must stop.
The performance of the individual test steps of the STO function should be logged.
The tests specified above are the minimum set; further test steps may be required depending on the application,
for example a controlled stop should be verified in a SS1 application.