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NOTICE
Bearing damage
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.
Dangerous voltage via the converter
As long as the feeding converter is switched on, or the DC link of the converter is not
discharged, there can be a voltage at the motor terminals even when the rotor is not moving.
The voltage is up to 1000 V, depending on the converter type.
Ensure that the five safety rules are followed before working on the motor.
SIMOTICS XP 1MD4/1MD5
Operating Instructions 05/2015
WARNING
Preparations for use
4.10 Converter operation
39
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