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A-12 – Siemens Automation System S7-400 User Manual

Page 180

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Assembling and Installing Systems

A-12

Automation System S7-400 Hardware and Installation

A5E00850741-01

Ensure the following for frame and wall mounting:

• Use special contact washers with painted and anodized metal parts, or remove

the insulating protective layers.

• Provide large-area, low-impedance metal-to-metal connections when securing

the shield/protective ground bar.

• Cover the AC supply conductors in a shockproof arrangement.
Figure A-3 shows an example of wall mounting for EMC

Figure A-3

Wall Mounting an S7-400 for EMC