ctrlX SAFETY "SafeMotion"
In addition to the time monitoring of the transition function
"Safe stop 1 (SS1)", the ⮫ Safety monitored deceleration (SMD) is
called. If the SMD detects an exceeded velocity, the error "F7051
Safely-monitored deceleration " is reported and the drive is set to standstill
according to the parameterized error reaction (P‑0‑3263.0.1) (see ⮫ Error
reaction and escalation strategy). With the start of the error reaction, the run-
ning transition time monitoring is neither aborted nor retriggered. When the
transition time (P-0-3280.0.2 or P-0-3280.0.3) has elapsed, the error "F8350
Maximum transition time exceeded" is additionally signaled independently of
the status of the error reaction, and the safety function "Safe torque off (STO)"
is activated.
⇒ The maximum time between the selection of the transition function
"Safe stop 1 (SS1)" and activating of the safety function Safe torque off (STO)
does not depend on the transition progress! The maximum time span does is
not extended by an error.
The currently active velocity monitoring limit of Safe Motion is displayed in
“P‑0‑3238, SMO: Active velocity threshold. With this parameter it is possible to
check in the control unit whether the velocity command values are within the
allowed limits.
With the auxiliary function "⮫ limitation of the positioning velocity", it is pos-
sible to monitor and, if necessary, limit the velocity command value effective in
the drive to the active velocity threshold (P‑0‑3238).
If the drive has been decelerated without error within the parameterized
transition time (P-0-3280.0.2 or P-0-3280.0.3), the transition by the transi-
tion function SS1 is completed with the selection of the safety function
"Safe torque off (STO)".
Fig. 37: Monitoring function 4(+2b): "SS1, time- and standstill-prioritized with
NC-controlled transition (based on actual velocity)"
*1) SMD executed on the basis of the actual velocity
P‑0‑3255 SMO: Velocity threshold for Safe standstill
P‑0‑3280.0.2 SMO: Max. transition time normal oper. to safe standstill
P‑0‑3280.0.3 SMO: Max. transition time between safe operating states
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