Guidelines On Preventing Electrical Interference; Guidelines For Use Of Profibus Dp - Siemens SIMATIC VS130 Series Manual

3.3

Guidelines on Preventing Electrical Interference

To avoid interference, you must shield your system. Low-frequency (LF) and high-
frequency (HF) interference signals can result in an incorrect response if the
system is badly grounded or not shielded.
Interference signals can be caused, for example, by switching relays or contactors
(high rates of change in current or voltage, HF interference signals) or by different
ground potentials between two parts of a system (LF interference signals).
Using/Laying Interference-Proof Cable
•
The cable to the sensor head and the RS-232 cable must be shielded.
The standard cables supplied by Siemens meet these requirements.
•
All plug-in connections must be secured by screws or a locking mechanism.
•
Signal lines must not run parallel to power cables. A separate cable channel
must be used with a minimum clearance of 50 cm from power cables.
Note
For more detailed information, refer to the installation manual SIMATIC S7-300
Programmable Controller, Hardware and Installation in the section on "Wiring".
3.4

Guidelines for Use of PROFIBUS DP

If you are using PROFIBUS DP (to control the device and/or to transfer the results)
the installation and configuration guidelines must be kept to. You will find this
information in the installation manual SIMATIC S7-300 Programmable Controller,
Hardware and Installation.
Vision Sensor VS 130
A5E00199459-01
Installation
3-5