SSR – Safe Speed Range
The SSR safety subfunction prevents the speed of the drive from leaving a specified range. If the permitted speed is exceeded or undershot, the SSR safety subfunction will be triggered and a fault response will be initiated at the same time (usually SS1).

= | SSR safety subfunction monitored | |
| = | SSR safety subfunction is triggered |
v | = | Speed |
t | = | Time |
t1 | = | Point in time at which SSR is activated. |
t2 | = | Point in time at which SSR is deactivated. |