Installation - Siemens SIMATIC S7-300 Hardware And Installation Manual

Configuring
Note
The power consumption of the individual modules is given in the Module Data
Reference Manual.
Rules: Interference-proof installation of the connection
Special shielding and grounding measures are not required if you interconnect the
CU and EM using suitable interface modules (Send IM and Receive IM).
However, you must ensure that
• all racks are interconnected with low impedance,
• the racks of a grounded assembly are grounded in a star pattern,
• the contact springs on the racks are clean and not bent, thus ensuring that
interference currents are dissipated.
5-10
S7-300 Programmable Controller Hardware and Installation
A5E00105492-02