Siemens SINUMERIK 840D Description Of Functions page 14

Contents
3 Safety-Related Functions....................................................................................... 3-55
3.1 Basic mechanisms of SI functions .............................................................. 3-57
3.1.1 Safe standstill - disconnecting the energy feed .................................... 3-57
3.1.2 Shutdown paths .................................................................................... 3-58
3.1.3 Testing the shutdown paths.................................................................. 3-61
3.1.4 Overview of the machine data for the shutdown paths ......................... 3-67
3.1.5 Stop responses .................................................................................... 3-67
3.1.6 Overview of the machine data for stop responses ................................ 3-76
3.2 External STOPs .......................................................................................... 3-77
3.2.1 Test stop for external STOPs................................................................ 3-80
3.2.2 Overview of the machine data for the "external STOPs" function ......... 3-84
3.3 Safe standstill (SH) ..................................................................................... 3-85
3.3.1 Overview of the machine data for the SH function ................................ 3-86
3.4 Safe operating stop (SBH) .......................................................................... 3-86
3.4.1 Selecting/de-selecting safe operating stop ........................................... 3-87
3.4.2 Effects when the limit is exceeded for SBH .......................................... 3-90
3.4.3 Overview of the machine data for the SBH function.............................. 3-91
3.5 Safely-reduced speed (SG) ........................................................................ 3-92
3.5.1 Selecting/de-selecting the safely-reduced speed.................................. 3-94
3.5.2 Limiting the setpoint speed ................................................................... 3-96
3.5.3 Safely-reduced speed when using selector gearboxes......................... 3-97
3.5.4 Effects when the limit value is exceeded for SG ................................... 3-98
3.5.5 SG-specific stop responses .................................................................. 3-99
3.5.6 Override for safely-reduced speed........................................................ 3-100
3.5.7 Example: Override for safely-reduced speed........................................ 3-102
3.5.8 Application examples for SG ................................................................ 3-103
3.5.9 Examples for safe input of ratios........................................................... 3-103
3.5.10 Overview of the machine data for the function SG................................ 3-110
3.6 Safe software limit switches (SE)................................................................ 3-111
3.6.1 Effects when an SE responds............................................................... 3-112
3.6.2 Overview of the machine data for the SE function ................................ 3-114
3.7 Safe software cams (SN) ............................................................................ 3-115
3.7.1 Effects when SN reponds ..................................................................... 3-119
3.7.2 Application example for "safe software cams" ...................................... 3-120
3.7.3 Overview of machine data for the SN function...................................... 3-123
3.8 Safe braking ramp (SBR) (840D from SW 4.2) ........................................... 3-124
3.8.1 Overview of the machine data for SBR ................................................. 3-126
3.9 Safety-related input/output signals (SGE/SGA) .......................................... 3-127
3.9.1 Signal processing for the NCK monitoring channel............................... 3-132
3.9.2 Signal processing in the drive monitoring channel ................................ 3-134
3.9.3 Overview of the machine data for SGE/SGA ........................................ 3-135
3.10 Safe programable logic (SPL) (840D SW 4.4.18)...................................... 3-136
3.10.1 NCK-SPL program................................................................................ 3-139
3.10.2 Starting the NCK-SPL using the PROG_EVENT mechanism
(from SW 6.4.15) .................................................................................. 3-141
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SINUMERIK 840D/SIMODRIVE 611 digital SINUMERIK Safety Integrated (FBSI) - 11.03 Edition
© Siemens AG 2003 All Rights Reserved
11.03