Switching On - Siemens SIMOTICS XP 1MB5 Operating Instructions Manual
Low-voltage motors
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Also See for SIMOTICS XP 1MB5:
- Operating instructions manual (174 pages) ,
- Operating instructions manual (166 pages)
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Commissioning
7.6 Switching on
7.6
Switching on
Measures for start-up
After installation or inspections, the following measures are recommended for normal start-up
of the machines:
• Start the machine without a load. To do this, close the circuit breaker and do not switch off
prematurely. Switching the machine off again while it is starting and still running at slow
speed should only be done to the extent necessary, for example for checking the direction of
rotation or for checking in general. Allow the machine to run down before switching it on
again.
• Check mechanical operation for noise or vibration at the bearings or end shields.
• If the machine is not running smoothly or is emitting abnormal noises, switch it off, and
determine the cause of the fault as it runs down.
• If mechanical operation improves immediately after the machine is switched off, then the
cause is magnetic or electrical, e.g. voltage imbalance, magnetic imbalance. If mechanical
operation does not improve immediately after switching the machine off, then the cause is
mechanical, e.g. an imbalance in the electrical machines or in the driven machine,
inadequate alignment of the machine set, operation of the machine with the system
resonating (system = machine + base frame + foundations etc.).
• If the machine runs perfectly in terms of its mechanical operation, switch on any cooling
devices present and continue to monitor the machine for a while as it idles.
• If it runs perfectly, connect a load. Check that it runs smoothly.
Read off and document the values for voltage, current, and power.
Where possible, read off corresponding values for the driven machine and document them
as well.
• Monitor the bearing temperature, winding temperature, etc. until the system reaches a
steady state.
Document these, provided this is possible with existing measuring instruments.
NOTICE
Destruction of the machine
The machine can be destroyed if the vibration values are not strictly complied with.
• In operation, maintain vibration values in accordance with DIN ISO 10816‑3.
98
1MB5 shaft height 400/450
Operating Instructions, 04/2023, A5E52802354A
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