Siemens SINAMICS G120 Instructions d'exploitation télécharger pdf (Page 41)

Installing

3.3 Installing the Power Module

Inverter with CU240B-2 and CU240E-2 Control Units

Operating Instructions, 01/2011, FW 4.4, A5E02299792B AB

● All cables should be kept as short as possible

● Signal and data cables and the associated equipotential bonding cables must always be

routed in parallel with the smallest possible clearance between them

● Shielded motor cables must be used

● The shielded motor cable should be routed separately away from the cables to the motor

temperature sensors (PTC/KTY)

● Signal and data cables must be shielded.

● Especially sensitive control cables - such as setpoint and actual value cables - should be

routed without any interruption with optimum shield support at both ends

● Shields should be connected at both ends to the grounded enclosures through a good

electrical connection and through a large surface area

● Cable shields should be connected as close as possible to where the cable enters the

cabinet

● EMC shield bars should be used for power cables; the shield support elements provided

in the inverter should be used for signal and data cables

● If at all possible, cable shields should not be interrupted by intermediate terminals

● Cable shields should be retained both for power cables as well as for signal and data

cables using the appropriate EMC clamps. The shield clamps must connect the shield to

the EMC shield bar or the shield support element for control cables through a low

inductive connection through a large surface area.

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Figure 3-5 Shield support

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Siemens SINAMICS G120 Instructions d'exploitation Page 41