Details And Parameterization; Safe Stop 1 (Ss1, Time And Acceleration Controlled) - Siemens SINUMERIK MC Commissioning Manual

Safety functions integrated in the drive
4.3 SS1
Note
SS1 with external stop (SS1E)
If you use "SS1 with external stop", neither of the two monitoring functions (SBR, SAM) is
active. For SS1E, the drive must be stopped within the delay time, for example via the PLC
program. STO becomes active after the delay time expires.
4.3.1

Details and parameterization

4.3.1.1

Safe Stop 1 (SS1, time and acceleration controlled)

For function SS1 of the Extended Safety Functions, braking monitoring is included.
● For p9506 = 0, the following applies:
Braking is monitored with the "Safe Acceleration Monitor" function (see Chapter "SAM
(Page 128)").
In this case, we also talk about "SS1 (time and acceleration controlled)".
● For p9506 = 2, the following applies:
Braking is monitored using the "Safe Brake Ramp" function (see Chapter "SBR
(Page 130)").
In this case, we also talk about "SS1 (speed controlled)".
The "Safe Stop 1" (SS1) function allows the drive to be stopped according to 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" (STO) once the delay time has elapsed (p9556) or when the
shutdown speed is fallen below (p9560).
Functional features of Safe Stop 1 with encoder
● The delay time starts after the function has been selected. If SS1 is deselected again within
this time, the STO function is selected and deselected immediately again after the delay
time has expired or if the speed drops below the shutdown speed; i.e. the SS1 function is
terminated normally. It cannot be interrupted.
● Selection and monitoring of the acceleration (SAM) or the monitoring function "Safe Brake
Ramp" are implemented in two channels, but braking along the OFF3 ramp is only
implemented in one channel.
● Effect on "Setpoint speed limit effective" (r9733[0...2]):
For SS1 (≙ STOP B), setpoint 0 is specified in r9733[0...2].
Commissioning
The delay time (SS1 time) is set by entering parameter p9556. The wait time until safe pulse
cancellation (STO) can be shortened by defining a shutdown speed in p9560.
100
Safety Integrated (with SINAMICS S120)
Commissioning Manual, 02/2020, A5E46305916B AB