6-31
Safe Torque Off
AC30V series Variable Speed Drive
Channel A Fault Check:
STO test
Comprehensive Check, Activity
Expected reaction and effect
10
Ensure the drive is running and the motor is turning at SPT1.
Disconnect terminal X10/01 for approximately 5 seconds (must exceed 3 seconds).
Motor must immediately coast to rest.
Drive must report STO trip immediately.
X10/05 and /06 must remain OFF.
11
The STO function has latched in hardware to disable the drive.
Re-apply 24V to terminal X10/01, and then try to restart drive.
Drive must not start.
Drive must continue to report STO trip.
X10/05 and /06 must remain OFF.
12
Remove and re-apply all power to the drive
X10/05 and /06 must be OFF.
13
Try to restart drive at SPT1.
Drive must start at SPT1.
X10/05 and /06 must remain OFF.
Channel B Fault Check:
STO test
Comprehensive Check, Activity
Expected reaction and effect
14
Ensure the drive is running and the motor is turning at SPT1.
Disconnect terminal X10/03 for approximately 5 seconds (must exceed 3 seconds).
Motor must immediately coast to rest.
Drive must report STO trip immediately.
X10/05 and /06 must remain OFF.
15
The STO function has latched in hardware to disable the drive.
Re-apply 24V to terminal X10/03, and then try to restart drive.
Drive must not start.
Drive must continue to report STO trip.
X10/05 and /06 must remain OFF.
16
Remove and re-apply all power to the drive
X10/05 and /06 must be OFF.
17
Try to restart drive at SPT1.
Drive must start at SPT1.
X10/05 and /06 must remain OFF.
18
Stop the drive.
Drive must decelerate to rest.
X10/05 and /06 must remain OFF.