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①
②
③
Figure 4-2
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 couple the motors.
4.11.5
Speed limits for converter operation
Observe the information on the rating plate regarding the speed limits for converter operation.
1FU9
Operating Instructions, 07/2020, A5E46712792A
Driven machine
Motor
Coupling
Schematic representation of a tandem drive
4.11 Converter operation
④
Insulated bearings
⑤
Insulated tachometer fitting
⑥
Insulated coupling
Preparing for use
39
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