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