Parker AC30 - Page 107

Safe Torque Off 6-29
AC30 series Variable Speed Inverter
Channel A Check:
STO test
Comprehensive Check, Activity
Expected reaction and effect
6
With drive running and motor turning at SPT1, momentarily disconnect terminal
X10/01 (maximum duration of disconnect = 1 second), while retaining +24V at
terminal X10/03.
Motor must immediately coast to rest.
Drive must report STO trip immediately.
X10/05 and /06 must remain OFF.
7
Ensure terminals X10/01 and X10/03 are both 24V. Try to restart the drive.
Drive must restart at SPT1.
STO trip must clear.
X10/05 and /06 must remain OFF.
Channel B Check:
STO test
Comprehensive Check, Activity
Expected reaction and effect
8
With drive running and motor turning at SPT1, momentarily disconnect terminal
X10/03 (maximum duration of disconnect = 1 second), while retaining +24V at
terminal X10/01.
Motor must immediately coast to rest.
Drive must report STO trip immediately.
X10/05 and /06 must remain OFF.
9
Ensure terminals X10/01 and X10/03 are both 24V. Try to restart the drive.
Drive must restart at SPT1.
STO trip must clear.
X10/05 and /06 must remain OFF.