Image 4-3 Schematic Representation Of A Tandem Drive - Siemens 1LA8 Operating Instructions Manual

Preparations for use
4.13 Converter operation
Tandem operation
If you connect two motors in series in "tandem operation", install an insulated coupling between
the motors.
①
②
③
Image 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.
See also
Service and Support (Page 137)
40
Driving machine
Motor
Coupling
Schematic representation of a tandem drive
④
Insulated bearings
⑤
Insulated tachometer fitting
⑥
Insulated coupling
SIMOTICS TN Series N-compact 1LA8
Operating Instructions 05/2016