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Commissioning
7.3 Switching on
7.3
Switching on
7.3.1
Measures required for commissioning and test operation
After installation or inspection, carry out a test run:
1. Start up the machine without a load. To do this, close the circuit breaker and do not switch
off prematurely. Check whether it is running smoothly.
Switching the machine off again while it is starting up and still running at slow speed should
be kept to an absolute minimum, for example for checking the direction of rotation or for
checking in general.
Allow the machine to run down before switching it on again.
2. If the machine is running smoothly and evenly, switch on the cooling equipment. Continue
to observe the machine for a while in no-load operation.
3. If it runs perfectly, connect a load.
76
NOTICE
Thermal overload
In addition to the load torque, the ramp-up (accelerating) time is essentially influenced by
the moment of inertia to be accelerated. While ramping up, the inrush (starting) current of
the machine is a multiple of the rated current. This can result in thermal overload. The
machine can be damaged.
As a consequence, when ramping up, observe the following:
• Monitor the ramp-up time and number of consecutive starts.
• Comply with the limit values and/or ramp-up conditions.
Operating Instructions, 07/2020, A5E46712792A
1FU9
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