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Preparing for use
5.10 Converter operation
• Use the common-mode filter (damping cores) at the converter output. The SIEMENS sales
partner is responsible for selecting and dimensioning.
• Limit the rise in voltage by using output filters. Output filters dampen the harmonic content
in the output voltage.
• Use the motor reactors.
• Preferably use an IT line supply with an insulated neutral point.
The operating instructions for the converter are not part of this documentation. Carefully
comply with the instructions in the converter configuring information.
5.10.4
Insulated bearings for converter operation
If you control the machine from a low-voltage converter, depending on the machine type, use
an insulated bearing at the NDE.
An insulated speed encoder can be optionally mounted.
Comply with the information provided on the machine plates relating to bearing insulation
and possible jumpers.
①
②
③
Figure 5-1
NOTICE
Bearing damage
The bearing insulation must not be bridged. Bearing currents can damage bearings.
• Do not bridge the bearing insulation for subsequent installation work, such as the
• If you have any questions, please contact the Service Center (Page 12).
If you connect 2 motors in series in "tandem operation", install an insulated coupling
between the motors.
50
Shaft height
100 ... 280
315 ... 450
Driven machine
Motor
Coupling
Schematic representation of a single drive
installation of an automatic lubrication system or a non-insulated vibration sensor.
Insulated bearings NDE
Optional
Standard
④
Insulated bearings
⑤
Insulated tachometer fitting
Operating Instructions, 10/2023, A5E46712792A
1FU9
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