4.1.1 Permissible line supplies........................................................................................................57
4.1.1.1 TN system ..............................................................................................................................57
4.1.1.2 TT system ..............................................................................................................................58
4.1.1.3 IT system................................................................................................................................59
4.1.1.4 Removing functional grounding of the converter....................................................................60
4.1.2 Minimum cross-section of the protective conductor ...............................................................62
4.1.3 Maximum permissible motor cable length..............................................................................64
4.1.4 Connecting the converter and converter components ...........................................................66
4.1.4.1 Connection overview .............................................................................................................66
4.1.4.2 Connecting inverters ..............................................................................................................68
4.1.4.3 Cable cross-sections and screw tightening torques...............................................................72
4.1.4.4 Cable lugs ..............................................................................................................................73
4.1.4.5 Connecting the cable shields (FSA ... FSG only)...................................................................74
4.1.5 Connecting the motor to the converter in a star or delta connection......................................76
4.2 Control interfaces ...................................................................................................................77
4.2.1 Overview of the interfaces......................................................................................................77
4.2.2 Fieldbus interface allocation...................................................................................................78
4.2.3 Terminal strips........................................................................................................................79
4.2.4 Factory interface settings .......................................................................................................81
4.2.5 Default setting of the interfaces..............................................................................................82
4.2.6 Terminal strip X9 (FSH/FSJ only) ..........................................................................................97
4.2.7 Wiring the terminal strips........................................................................................................99
4.2.8 RS485 interface for the fieldbus...........................................................................................101
5 Commissioning .........................................................................................................................................103
5.1 Commissioning guidelines ...................................................................................................103
5.2 Tools ....................................................................................................................................104
5.3 Preparing for commissioning................................................................................................105
5.3.1 Collecting motor data ...........................................................................................................105
5.3.2 Forming DC link capacitors ..................................................................................................107
5.3.3 Converter factory setting ......................................................................................................108
5.4 Quick commissioning using the BOP-2 operator panel........................................................110
5.4.1 Fitting the BOP-2 to the converter........................................................................................110
5.4.2 Overview of quick commissioning ........................................................................................111
5.4.3 Start quick commissioning and select the application class.................................................112
5.4.4 Selecting an application class ..............................................................................................113
5.4.5 Standard Drive Control.........................................................................................................114
5.4.6 Dynamic Drive Control .........................................................................................................116
5.4.7 Expert...................................................................................................................................118
5.4.8 Identifying the motor data and optimizing the closed-loop control .......................................122
5.5 Restoring the factory settings...............................................................................................124
6 Advanced commissioning.........................................................................................................................125
6.1 Overview of the converter functions.....................................................................................125
6.2 Drive control .........................................................................................................................127
6.2.1 Sequence control when switching the motor on and off.......................................................127
6.2.2 Adapt the default setting of the terminal strips .....................................................................129
6.2.2.1 Digital inputs.........................................................................................................................131
6.2.2.2 Analog input as digital input .................................................................................................134
Table of contents
SINAMICS G120XA converter
4 Operating Instructions, 03/2019, FW V1.0, A5E44751205B AB