Safe Torque Off
6-12
AC30V series Variable Speed Drive
STO Input Timing Diagrams
IDEAL OPERATION
In ideal operation, both inputs X10/01 and X10/03 should change state simultaneously reflecting true dual-channel operation as intended.
States:
1
Both inputs are low. Drive is tripped and STO prevents the drive from starting. User output is ON. This is the “safe torque off” state of
the drive.
2
Both inputs are high. Drive is able to run under software control. User output is OFF.
Channel A: X10/01
Channel B: X10/03
Output: X10/05, X10/06
STATE
24V
0V
24V
0V
ON
OFF
1
2
1
