3-35 Standard specifications
3Controller
3.1.2 Protection specifications and operating supply
A protection method complying with the IEC Standard is adopted for the controller.
The IEC IP symbols refer only to the degree of protection between the solid and the fluids, and don't indicated
that any special protection has been constructed for the prevention against oil and water.
【Information】
・ The IEC IP20
It indicates the protective structure that prevents an iron ball 12
0
+0.05
mm diameter, which is being pressed with
the power of 3.1 kg±10%, from going through the opening in the outer sheath of the supplied equipment.
Refer to the section Page 110, "6.2 Working environment" for details on the working environment.
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