Siemens SINUMERIK 840D sl Function Manual page 7

6.4 Actual value conditioning.......................................................................................................84
6.4.1 Encoder types........................................................................................................................84
6.4.2 Encoder adjustment, calibrating the axes..............................................................................89
6.4.3 Axis states..............................................................................................................................90
6.4.4 User agreement.....................................................................................................................92
6.4.5 Selector gearboxes................................................................................................................94
6.4.5.1 Taking into account selector gearboxes.................................................................................94
6.4.5.2 Gearbox with direction of rotation reversal.............................................................................95
6.4.6 Actual value synchronization (slip for 2-encoder systems)....................................................96
6.4.7 Encoder limit frequency..........................................................................................................98
6.5 Enabling the safety-related functions.....................................................................................98
6.6 Switching the system on/off...................................................................................................99
7 Safety functions integrated in the system/drive........................................................................................101
7.1 Safe standstill (SH)..............................................................................................................101
7.1.1 Switch-off signal paths.........................................................................................................103
7.1.2 Testing the switch-off signal paths.......................................................................................105
7.2 Safe Operating Stop (SBH)..................................................................................................106
7.2.1 Selecting/deselecting the Safe Operating Stop....................................................................107
7.2.2 Effects when the limit is exceeded for SBH.........................................................................110
7.3 Safe Stops A-F.....................................................................................................................112
7.3.1 General................................................................................................................................112
7.3.2 Description of STOP A.........................................................................................................118
7.3.3 Description of STOP B.........................................................................................................120
7.3.4 Description of STOP C.........................................................................................................122
7.3.5 Braking response for STOP B/C..........................................................................................123
7.3.6 Description of STOP D.........................................................................................................123
7.3.7 Description of STOP E.........................................................................................................125
7.3.8 Description of STOP F.........................................................................................................127
7.3.9 Forced checking procedure of the external STOPs.............................................................131
7.3.10 Canceling stopping delay times...........................................................................................132
7.4 Safe Acceleration Monitor....................................................................................................134
7.5 Safely reduced speed (SG)..................................................................................................137
7.5.1 Speed monitoring, encoder limit frequency..........................................................................138
7.5.2 Selecting/deselecting safely reduced speed........................................................................139
7.5.3 Effects when the limit value is exceeded for SG..................................................................141
7.5.4 Override for safely reduced speed.......................................................................................144
7.5.5 Example: Override for safely reduced speed.......................................................................147
7.6 Safe speed range detection "n<nx"......................................................................................148
7.6.1 Basic function "n<nx"...........................................................................................................149
7.6.2 Function "Synchronization, hysteresis and filtering n<nx"....................................................150
7.7 Safe software limit switches (SE).........................................................................................154
7.7.1 Effects when an SE responds..............................................................................................155
7.8 Safety software cams and safety cam track (SN)................................................................157
7.8.1 Safe software cams (4 cam pairs)........................................................................................159
7.8.2 Safe Cam Track...................................................................................................................162
Safety Integrated
Function Manual, 12/2017, 6FC5397-4BP40-6BA1
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