Siemens SIMOTICS DP 1PC134, Руководство по эксплуатации

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8.1.2 Switching on with the anti-condensation heating active
Excessively high machine temperature when heating is switched on
If the anti-condensation heating is operated while the machine is running, this can increase the
temperatures inside the machine. Material damage can result.
● Make sure that the anti-condensation heating is switched off before the machine is switched
on.
● Only operate anti-condensation heating when the machine is switched off.
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.
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.
3. If this is possible using the available measuring equipment, check the bearing and stator
winding temperatures.
8.3 Switch off the external fan
Do not immediately switch off the separately-driven (external) 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
Operation
8.4 Switching on again after an emergency switching-off
1PC134, 1PC136 crane motors SH 132 ... 315
Operating Instructions, 02/2019, A5E43212221A
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