Preparations for use
4.12 Converter operation
The bearing insulation must not be bridged. Damage may be caused to the bearings if there
is a flow of current.
● 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
Schematic representation of a tandem drive
If the coupling between the motors of the tandem drive is not insulated, bearing currents can
cause damage to the drive-end bearings of both motors.
Use an insulated coupling to link the motors.
If you connect two motors in series in "tandem operation", fit a coupling between the motors;
this coupling should satisfy Directive 94/9/EC 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
Insulated tachometer fitting
SIMOTICS TN Series N-compact 1LA8
Operating Instructions 05/2014