Safe Stop 1 (Ss1, Time-Controlled) - Siemens SINUMERIK 840D sl Function Manual

05.08
Response times for the Safe Torque Off function
The following values can be specified for the response times when the function is
selected/deselected via the input terminals:
S Typical response time
2 x safety monitoring cycle CU (r9780) + inputs/outputs sampling time (p0799)
S Maximum response time that can occur when an error develops:
4 x safety monitoring cycle CU (r9780) + input/output time sampling time
(p0799)
4.3 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
along the OFF3 ramp (p1135), and after the delay time set in p9652/p9852,
switches the pulses into the Safe Torque Off (STO) state.
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
S SS1 is activated by p9652 and p9852 (delay time) not equal to "0".
S The function can only be activated in conjunction with Safe Torque Off.
S When SS1 is selected, the drive is braked along the OFF3 ramp (p1135) and
STO/SBC are automatically initiated after expiry of the delay time (p9652/9852).
After the function has been activated the delay time runs – 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.
S The selection is realized through two channels – however braking along the
OFF3 ramp, only through one channel.
Enabling the SS1 function
The function is enabled by entering the delay time in p9652 and p9852.
© Siemens AG 2008 All Rights Reserved
SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) – 05.2008 Edition
Safety Functions Integrated in the Drive
4.3 Safe Stop 1 (SS1, time–controlled)
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