Safe Stop 1 (Ss1, Time Controlled) - Siemens Sinamics S110 Function Manual

8.4.2

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. 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/p9852 has
elapsed.
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 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 and/or
● The settings for parameters p9652/p9852 shown below have the following effect:
Setting
p9652/p9852 = 0
p9652/p9852 > 0
● 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,
● The input terminals can be debounced to prevent signal faults triggering other faults.
Function Manual
Function Manual, 01/2011, 6SL3097-4AB10-0BP3
PROFIsafe:
– p9601.0/p9801.0 = 1 (enable via terminals)
– p9601.3/p9801.3 = 1 (enable via PROFIsafe)
Effect
STO enabled
STO enabled and SS1 not enabled (which
also means that it cannot be selected)
SS1 enabled
automatically initiated after the delay time has expired (p9652/p9852).
As soon as the function is selected, the delay time will start to run 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.
Note
So that the drive is able to travel down the OFF3 ramp completely and any motor holding
brake present can be applied before the pulse is switched off, the delay time can be set
as follows:
 Motor holding brake parameterized: Delay time ≥ p1135 + p1228 + p1217
 Motor holding brake not parameterized: Delay time ≥ p1135 + p1228
only through one channel.
Parameters p9651 and p9851 are used to set filter times.
Safety Integrated Functions
8.4 Safety Integrated Basic Functions
Control type for Basic Functions
Via terminals
Via Profisafe
Via Profisafe or terminals
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