Switching On The Machine; Deactivating; Switching On Again After An Emergency Switching-Off; Stoppages - Siemens SIMOTICS DP Operating Instructions Manual

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
winding temperatures.
8.3

Deactivating

Commission any devices provided for protection against condensation after switching off the
machine.
Do not immediately switch off the separately-driven fan after switching off the machine. First
wait for the machine to cool down. This will prevent the accumulation of residual heat.
8.4

Switching on again after an emergency switching-off

• Check the machine before recommissioning the driven machine after an Emergency Off.
• Eliminate all the causes that have led to the emergency off
8.5

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 stationary machine is not exposed to any vibration,
no increased level of corrosion, ... then the following measures are required.
1FZ shaft height 280
Operating Instructions, 02/2022, A5E51698698A
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.
Operation
8.5 Stoppages
89