Figure 4-2 Schematic Representation Of A Single Drive; Figure 4-3 Schematic Representation Of A Tandem Drive - Siemens SIMOTICS FD 1LL1 Operating Instructions Manual

Preparations for use
4.19 Converter operation
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
● 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 4-3
NOTICE
Bearing damage
Bearing currents can flow if the coupling between the motors of the tandem drive is not
insulated. This can damage the DE bearings of both motors.
● Use an insulated coupling to link the motors.
46
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
Operating Instructions 01/2019
SIMOTICS FD 1LL1