Safe Stop 1 (Ss1, Time Controlled); Ss1 With Off3 - Siemens Sinamics S120 Function Manual

Description of Safety Integrated functions
4.1 Safety Integrated basic functions
4.1.2

Safe Stop 1 (SS1, time controlled)

4.1.2.1

SS1 with OFF3

The "Safe Stop 1" (SS1) function allows the drive to be stopped in accordance with
EN 60204-1, Stop Category 1. The drive decelerates with the OFF3 ramp (p1135) once
"Safe Stop 1" is selected and switches to "Safe Torque Off" once the delay time set in p9652
has elapsed.
Not e
S election via terminals
The selection of the "Safe Stop 1" (time-controlled) function via terminals is parameterized
by setting a delay > 0 in p9652. In this case, the STO function can no longer be selected
directly via terminals, i.e. either STO or SS1 can be selected via terminals.
If the "Safe Stop 1" (time-controlled) function has been selected by parameterizing a delay
time in p9652, STO can no longer be selected directly via terminals.
Functional features of Safe Stop 1
SS1 is enabled by p9652 (delay time) ≠ 0.
● Setting parameter p9652 has the following effect:
– p9652 = 0
– p9652 > 0
● When SS1 is selected, the drive is braked along the OFF3 ramp (p1135) and STO/SBC is
automatically initiated after the delay time has expired (p9652).
After the function has been selected, the delay timer runs down - even if the function is
deselected during this time. In this case, after the delay time has expired, the STO/SBC
function is selected and then again deselected immediately.
Not e
S et ting the delay t ime
So that the drive is able to travel down the OFF3 ramp completely and any motor holding
brake present can be applied, before the pulses have been safely deleted, the delay time
should be set as follows:
• Motor holding brake parameterized: Delay time p9652 ≥ p1135 + p1228 + p1217
• Motor holding brake not parameterized: Delay time p9652 ≥ p1135 + p1228
• The setting of parameter p1135 must be oriented towards the actual braking capability
● The timer (p9652) after whose expiration STO is activated, is implemented with two
channels, although deceleration along the OFF3 ramp is only one channel.
68
SS1 is not enabled. Only STO can be selected via TM54F, the onboard terminals
and/or PROFIsafe.
SS1 is enabled. Only SS1 can be selected via the onboard terminals; with PROFIsafe,
a selection of SS1 and STO is possible.
of the drive.
Function Manual, (FHS), 07/2016, 6SL3097-4AR00-0BP6
Safety Integrated