Ss1 (Time-Controlled) With External Stop; Overview Of Important Parameters - Siemens SINUMERIK 840D sl Function Manual

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SS1 (time-controlled) with external stop

SS1 and controlled shutdown

In order to achieve stop Category 1 according to EN 60204-1 using function "SS1 (time-

controlled) with external stop (SS1E)", the higher-level control must facilitate a controlled

shutdown at the same time.

Any axis motion is possible

During the delay time (p9652), for "SS1 (time-controlled) with external stop", arbitrary axis

motion caused by the position controller is possible.

Differences between "Safe Stop 1 with OFF3 and with external stop"

"SS1 with OFF3" and "SS1 with external stop" have the following differences:

● In order to activate "SS1 with external stop", parameter p9653 must also be set = 1.

● When SS1 is selected, the drive is not braked along the OFF3 ramp, but after the delay

time has expired (p9652), only STO/SBC is automatically initiated.

● p1135[0...n]

Safety Integrated

Function Manual, 12/2017, 6FC5397-4BP40-6BA1

OFF3 ramp-down time

SI Safe Stop 1 delay time (Control Unit)

SI Safe Stop 1 delay time (Motor Module)

SI status (Control Unit)

SI status (Control Unit + Motor Module)

SI status (group STO) / SI stat group STO

SI status (Motor Module)

SI Safe Stop 1 braking response integrated in the drive (only for "SS1

(time controlled) without OFF3"

Safety Functions integrated in the drive

5.4 Safe Stop 1 (SS1, time-controlled)