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Preparations for use
4.14 Converter operation
1MB155 / 1MB555
48
Operating Instructions, 03/2018, A5E41926185A
Tandem operation
If you connect two motors in series in "tandem operation", install an insulated coupling
between the motors.
①
Driving machine
④
Insulated bearings
②
Motor
⑤
Insulated tachometer fitting
③
Coupling
⑥
Insulated coupling
Figure 4-3
Schematic representation of a tandem drive
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.
4.14.5
Tandem operation
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.
4.14.6
Mechanical limit speeds for converter operation
Observe the information on the rating plate regarding the mechanical limit speeds for inverter
operation.
Summary of Contents for SIMOTICS XP 1MB155
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Page 10: ...Table of contents 1MB155 1MB555 8 Operating Instructions 03 2018 A5E41926185A ...
Page 94: ...Start up 7 2 Switching on 1MB155 1MB555 92 Operating Instructions 03 2018 A5E41926185A ...
Page 108: ...Operation 8 6 faults 1MB155 1MB555 106 Operating Instructions 03 2018 A5E41926185A ...
Page 144: ...Service and Support 1MB155 1MB555 142 Operating Instructions 03 2018 A5E41926185A ...
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