Safe Stop 1 (Ss1, Time Controlled) - Siemens SINAMICS S120 Function Manual

Parameter overview (see List Manual)
● p0799 CU inputs/outputs sampling times
● r9780 SI monitoring clock cycle (Control Unit)
● r9880 SI monitoring clock cycle (Motor Module)
9.4

Safe Stop 1 (SS1, time controlled)

General description
The "Safe Stop 1" function can be used to stop the drive in accordance with EN 60204-1,
stop category 1. After "Safe Stop 1" has been selected, the drive brakes with the OFF3 ramp
(p1135), and after the delay time set in p9652/p9852, changes to the status Safe Torque Off
(STO).
CAUTION
When the SS1 (time-controlled) function has been activated through the parameterization
of a delay in p9652/p9852, it is no longer possible to select STO via terminals.
Functional features of "Safe Stop 1"
SS1 is activated by p9652 and p9852 (delay time) not equal to "0"
● The function can only be activated in conjunction with "Safe Torque Off".
● When SS1 is selected, the drive is braked along the OFF3 ramp (p1135) and STO/SBC is
● The selection is realized through two channels - however braking along the OFF3 ramp,
Release of the SS1 function
The function is enabled by entering the delay time in p9652 and p9852.
Prerequisite
The "Safe Torque Off" function must be enabled.
In order that the drive can brake down to a standstill even when selected through one
channel, the time in p9652/p9852 must be shorter than the sum of the parameters for the
crosswise data comparison (p9650/p9850 and p9658/p9858).
The time in p9652/9852 must be dimensioned so that after selection, the drive brakes down
to a standstill.
Drive Functions
Function Manual, (FH1), 07/2007 Edition, 6SL3097-2AB00-0BP4
automatically initiated after the delay time has expired (p9652/p9852).
After the function has been activated the delay time runs - even if the function is de-
selected during this time. In this case, after the delay time has expired, the STO/SBC
function is selected and then again de-selected immediately.
only through one channel.
Safety Integrated basic functions
9.4 Safe Stop 1 (SS1, time controlled)
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