SDI – Safe Direction
The SDI safety subfunction prevents movement in an unintended direction. If this condition is violated, the SDI safety subfunction will be triggered and a fault response will be initiated at the same time (usually STO or SS1).
= | SDI safety subfunction monitored | |
| = | SDI safety subfunction is triggered |
v | = | Speed |
t | = | Time |
t1 | = | Point in time at which SDI is activated. |
t2 | = | Point in time at which SDI is deactivated. |
