Siemens SINAMICS S150 - Safe Stop 1 (SS1, Time Controlled)

Safety Integrated Basic Functions
5.2 Safe Stop 1 (SS1, time controlled)
Safety Integrated
Function Manual, 05/2010, A5E03264275A
69
5.2 Safe Stop 1 (SS1, time controlled)
General description
The "Safe Stop 1" (SS1, time controlled) function allows the drive to be stopped in
accordance with EN 60204-1, stop category 1. The drive brakes with the OFF3 ramp (p1135)
once "Safe Stop 1" is selected and switches to "Safe Torque Off" status once the delay time
set in p9652/p9852 has elapsed.
CAUTION
If the "Safe Stop 1" function (time-controlled) function has been selected by parameterizing
a delay in p9652/p9852, STO can no longer be selected directly via terminals.
Functional features of "Safe Stop 1"
SS1 is enabled when p9652 and p9852 (delay time) are not equal to "0".
● The precondition is the Basic Functions or STO are enabled via terminals.
– p9601.0/p9801.0 = 1
● Setting parameter p9652/p9852 has the following effect:
– p9652/p9852 = 0: STO active
– p9652/p9852 > 0: SS1 active
● 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/p9852).
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 de-selected immediately.
● The selection is realized through two channels - however braking along the OFF3 ramp,
only through one channel.
● A debounce function can be applied to the terminals of the Control Unit and the Motor
Module in order to prevent incorrect trips due to signal disturbances. The filter times are
set using parameters p9651 and p9851.
Enabling the "Safe Stop 1" function
The "Safe Stop 1" (SS1) function is enabled via the following parameters:
● SS1 via terminals or PROFIsafe:
– By entering the delay time in p9652 and p9852,