Insulated Bearings When Operated With A Converter - Siemens SIMOTICS DP 1PC134 Operating Instructions Manual

Preparing for use
4.7 Converter operation
4.7.4

Insulated bearings when operated with a converter

If the machine is operated from a low-voltage converter, insulated bearings are fitted at the NDE
and an insulated encoder with insulated bearings (option).
Comply with the plates on the machine relating to bearing insulation and possible bridges.
①
②
③
Figure 4-1
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
● Please contact the service center if necessary.
Tandem operation
If you connect two motors in series in "tandem operation", install an insulated coupling between
the motors.
①
②
③
Figure 4-2
36
Driving machine
Motor
Coupling
Schematic representation of a single drive
installation of an automatic lubrication system or a non-insulated vibration sensor.
Driving machine
Motor
Coupling
Schematic representation of a tandem drive
④
Insulated bearings
⑤
Insulated tachometer fitting
④
Insulated bearings
⑤
Insulated tachometer fitting
⑥
Insulated coupling
1PC134, 1PC136 crane motors SH 132 ... 315
Operating Instructions, 02/2019, A5E43212221A