Preparations for use
4.16 Converter operation
The bearing insulation must not be bridged. Bearing currents can damage bearings.
● Also for subsequent installation work, such as the installation of an automatic lubrication
● Contact the Service Center, if necessary.
If you connect two motors in series in "tandem operation", install an insulated coupling between
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.
Service and Support (Page 149)
If you connect two motors in series in "tandem operation", locate a coupling between the
motors; this coupling should satisfy the Directive 2014/34/EU or the regulations that apply in
the country where the equipment is installed.
system or a non-insulated vibration sensor, make sure that the bearing insulation cannot
Schematic representation of a tandem drive
Insulated tachometer fitting
SIMOTICS TN Series N-compact 1LA8
Operating Instructions 08/2017