Switch On; External Fan With Cover Sheet; Image - Siemens SIMOTICS DC 1HS7 Operating Instructions Manual

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Image 7-1

7.6

Switch on

Trial run
If the period between installation and commissioning is expected to be fairly long, make sure
that water-cooled machines undergo a test run without water cooling.
Procedure
● Start up the motor without a load, temporarily. Check the direction of rotation at this point.
● As the motor is coasting down, check the mechanical operation for noise and vibration at
● Where the motor is running without any mechanical problems, switch it back on again.
● In case of uneven running or abnormal noise, switch off the machine. Determine the cause
● If the mechanical operation improves immediately after the motor is switched off, the cause
SIMOTICS DC 1HS7
Operating Instructions 02/2016

External fan with cover sheet

the bearings and bearing shields.
Continue to the maximum speed allowed (according to the rating plate).
as it coasts.
is magnetic or electrical.
Commissioning
7.6 Switch on
67

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