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Switching On The Machine; Regreasing Roller Bearings; Stoppages - Siemens SIMOTICS FD 1LL1 Operating Instructions Manual

Low-voltage motor
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8.2

Switching on the machine

1. If at all possible, run the machine without load and check that it is running smoothly.
2. If it runs perfectly, connect a load.
3. If this is possible using the available measuring equipment, check the bearing and stator
8.3

Regreasing roller bearings

Refer to the regreasing instructions for the roller bearings on the lubricant plate.
8.4

Stoppages

The stoppage is a shutdown for a period of time, during which the machine is stopped but
remains at the location of use.
Under normal ambient conditions, e. g. the stopped machine is not exposed to any vibration, no
increased level of corrosion, etc. in general, the following measures are necessary during
stoppages.
NOTICE
Damage due to improper storage
Damage may occur to the motor if it is not stored properly.
If the machine is to be taken out of operation for more than 12 months, suitable anti-corrosion,
preservation, packaging, and drying measures must be taken.
See also
Transport (Page 34)
Start-up (Page 91)
SIMOTICS FD 1LL1
Operating Instructions 01/2019
NOTICE
Thermal overload of motors connected directly to the line supply
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 when connected to the line
supply, the inrush (starting) current is a multiple of the rated current. This can result in
thermal overload. This can damage the motor.
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 specified in the catalog or the
order documentation.
winding temperatures.
Operation
8.2 Switching on the machine
107

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