Siemens 1LA8 Operating Instructions Manual page 7

6.4.5 Use of aluminum conductors.......................................................................................................74
6.4.6 Using single-stranded cables......................................................................................................75
6.4.7 Internal equipotential bonding.....................................................................................................75
6.4.8 Stepless mating face for sealing in the terminal box cover (not for GT640)................................75
6.4.9 Minimum air clearances..............................................................................................................76
6.4.10 Finishing connection work...........................................................................................................76
6.5 Connecting the auxiliary circuits..................................................................................................76
6.5.1 Selecting cables..........................................................................................................................76
6.5.2 Bringing cables into the auxiliary terminal box and routing them................................................77
6.5.3 Connect metal shield in the terminal box ...................................................................................78
6.5.4 Connecting temperature monitoring for the stator winding..........................................................78
6.5.5 Terminating the connection work (auxiliary circuit).....................................................................79
6.5.6 Converter operation.....................................................................................................................79
6.5.6.1 Operation on a converter with a low pulse frequency.................................................................80
6.5.6.2 Converter peak voltage...............................................................................................................80
6.5.6.3 Reducing bearing currents..........................................................................................................81
6.5.6.4 Converter operation on a grounded network...............................................................................82
7 Start-up.......................................................................................................................................................83
7.1 Checks to be carried out prior to commissioning .......................................................................83
7.2 Measurement of the insulation resistance and polarization index before commissioning...........84
7.3 Greasing the roller bearings prior to commissioning...................................................................85
7.4 Setpoint values for monitoring the bearing temperature.............................................................86
7.5 Set values for monitoring the winding temperature.....................................................................86
7.6 Power on.....................................................................................................................................87
7.7 De-energizing..............................................................................................................................87
8 Operation....................................................................................................................................................89
8.1 Safety guidelines in operation.....................................................................................................89
8.2 Machine overheating caused by dust..........................................................................................90
8.3 Operation in hazardous areas.....................................................................................................91
8.4 Switching off the anti-condensation heating................................................................................92
8.5 Switching on the machine...........................................................................................................92
8.6 Regreasing roller bearings..........................................................................................................92
8.7 Switching on again after an emergency switching-off.................................................................92
8.8 Stoppages...................................................................................................................................92
8.8.1 Avoidance of condensation or formation of condensation within the machine............................94
8.8.2 Avoidance of damage to roller bearings during stoppages.........................................................94
8.8.3 Shaft grounding brushes (optional).............................................................................................95
8.8.4 Measurement of the insulation resistance after an extended stoppage......................................95
8.9 Decommissioning the machine...................................................................................................96
8.10 Re-commissioning the machine..................................................................................................96
8.11 faults............................................................................................................................................96
8.11.1 Inspections in the event of faults.................................................................................................96
SIMOTICS TN Series N-compact 1LA8
Operating Instructions 05/2014
Table of contents
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