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Siemens 1LA8 Operating Instructions Manual Page 7

Simotics tn series induction motor.
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6.4.1
Inserting the cable into the GT640 terminal box....................................................................68
6.4.2
Inserting the cable into the 1XB16... terminal box with cable gland ......................................68
6.4.3
Inserting the cable into the 1XB.. terminal box with ring seal.................................................69
6.4.4
Laying cables.........................................................................................................................70
6.4.5
Connecting cables with cable lugs.........................................................................................71
6.4.6
Connection without cable lugs...............................................................................................71
6.4.7
Use of aluminum conductors..................................................................................................73
6.4.8
Using single-stranded cables.................................................................................................73
6.4.9
Internal equipotential bonding................................................................................................73
6.4.10
6.4.11
Minimum air clearances.........................................................................................................74
6.4.12
Finishing connection work......................................................................................................75
6.5
Connecting the auxiliary circuits.............................................................................................75
6.5.1
Selecting cables.....................................................................................................................75
6.5.2
Bringing cables into the auxiliary terminal box and routing them...........................................75
6.5.3
Connecting temperature monitoring for the stator winding....................................................76
6.5.4
Terminating the connection work (auxiliary circuit)................................................................77
6.5.5
Converter operation...............................................................................................................77
6.5.5.1
Operation on a converter with a low pulse frequency............................................................77
6.5.5.2
Maximum peak voltage at the motor terminals......................................................................78
6.5.5.3
Reducing bearing currents.....................................................................................................78
6.5.5.4
Converter operation on a grounded network..........................................................................80
7
Start-up.......................................................................................................................................................81
7.1
Checks to be carried out prior to commissioning ..................................................................81
7.2
Measuring the insulation resistance before commissioning...................................................82
7.3
Greasing the roller bearings prior to commissioning..............................................................83
7.4
Setpoint values for monitoring the bearing temperature........................................................84
7.5
Set values for monitoring the winding temperature................................................................84
7.6
Test run..................................................................................................................................85
7.7
De-energizing.........................................................................................................................86
8
Operation....................................................................................................................................................87
8.1
Safety guidelines in operation................................................................................................87
8.2
Switching off the anti-condensation heating...........................................................................88
8.3
Switching on the machine......................................................................................................89
8.4
Regreasing roller bearings.....................................................................................................89
8.5
Switching on again after an emergency switching-off............................................................89
8.6
Stoppages..............................................................................................................................89
8.6.1
8.6.2
Avoidance of damage to roller bearings during stoppages....................................................90
8.6.3
Shaft grounding brushes (option)...........................................................................................91
8.6.4
8.7
Decommissioning the machine..............................................................................................92
8.8
Re-commissioning the machine.............................................................................................92
SIMOTICS TN Series N-compact 1LA8
Operating Instructions 05/2016
Table of contents
7

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