Siemens SIMATIC PANEL PC 877 Operations Instructions Page 35

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Planning use
3.5 Mounting positions and fastening
SIMATIC Panel PC 577
Operating Instructions, Release 04/2006, A5E00798484-01
3-9
3.5.4 Degree of protection
Principle
The degree of protection provided at the front is assured when the mounting seal lies
completely against the mounting cut-out.
Caution
Please ensure that the material strength at the mounting cut-out is a maximum of 6 mm.
Please follow the specifications for the dimensions in the "Mounting cut-out" section.
The degrees of protection are only guaranteed when the following is observed:
The material strength at the mounting cut-out is at least 2 mm.
The surface plane deviation of the mounting cut-out in relation to the external dimensions
of the control unit amounts to ≤ 0.5 mm when the control unit is mounted.
IP65 degree of protection and NEMA4
The IP65 degree of protection and NEMA4 is only provided for clamp mounting together with
a ring seal.
IP54 degree of protection
This degree of protection is assured when fixed using screws and the mounting components
for 19" rack accessories.
Note
For screw fixing of the 19" touch panel front, a backing plate is available as an accessory.
For further information, see "http://mall.ad.siemens.com/
".
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