Differences between "SS1 with OFF3" and "SS1 with external stop"
"SS1 with OFF3" and "SS1 with external stop" have the following differences:
● In order to activate "Safe Stop 1 with external stop", additionally set p9653 to 1.
● When SS1E is selected, the drive is not braked along the OFF3 ramp, but after the delay
time has expired (p9652), only STO/SBC is automatically initiated.
4.2.1.3 Function diagrams and parameters
Function diagrams (see SINAMICS S120/S150 List Manual)
● 2810 SI Basic Functions - STO (Safe Torque Off), SS1 (Safe Stop 1)
● 2811 SI Basic Functions - STO (Safe Torque Off), safe pulse cancellation
Overview of important parameters (see SINAMICS S120/S150 List Manual)
● p1135[0...n] OFF3 ramp-down time
● p1217 Motor holding brake closing time
● p1228 Pulse cancellation delay time
● p9601 SI enable functions integrated in the drive (Control Unit)
● p9652 SI Safe Stop 1 delay time (Control Unit)
● r9772.0...23 CO/BO: SI Status (Control Unit)
● r9773.0...23 CO/BO: SI Status (Control Unit + Motor Module)
● r9774.0...23 CO/BO: SI Status (group STO)
Only for "Safe Stop 1 (time-controlled) with external stop"
● p9653 SI Safe Stop 1 drive-based braking response
Safety functions integrated in the drive
4.2 SS1 Basic:
Safety Integrated (with SINAMICS S120)
Commissioning Manual, 02/2020, A5E46305916B AB 97
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