Insulated Bearings For Converter Operation - Siemens SIMOTICS SD 1LE5 Operating Instructions Manual

4.13.4

Insulated bearings for converter operation

If the machine is controlled from a low-voltage converter, depending on the machine type,
an insulated bearing can be fitted 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 4-2
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
• Where necessary, contact the Service Center.
If you connect 2 motors in series in "tandem operation", install an insulated coupling between
the motors.
①
②
③
Figure 4-3
1LE5, 1PC4 shaft height 315/355
Operating Instructions, 10/2020, A5E41454666A
Driven machine
Motor
Coupling
Schematic representation of a single drive
installation of an automatic lubrication system or a non-insulated vibration sensor.
Driven machine
Motor
Coupling
Schematic representation of a tandem drive
4.13 Converter operation
④ Insulated bearings
⑤ Insulated tachometer fitting
④ Insulated bearings
⑤ Insulated tachometer fitting
⑥ Insulated coupling
Preparing for use
43