Table of Contents
Advertisement
Connection
6.1
Guidelines for installation free of electrical interference
To prevent interference, you will need to provide shielding for 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.
Interfering signals can be caused by:
● Switching relays or contactors (large, rapid changes in current or voltage and HF
interfering signals).
● Different ground potentials between two parts of the system (LF interfering signals).
Use/installation of interference-proof cables
● Only use the recommended cable to connect the optical reader.
● Use only shielded cables to power the optical readers.
● Note that the maximum permitted cable length for the power supply is 30 m.
● Note that a maximum cable length of 30 m is permitted for the network cable (Ethernet).
● Do not lay signal lines and heavy current lines together. Use a separate cable duct at
least 50 cm from the heavy current lines.
Note
Observance of installation guidelines
Observe the information on installation guidelines in the installation manual "SIMATIC S7-
300 Automation System, Hardware and Installation", "Wiring" section.
Please note the guidelines for use of PROFINET IO to control and/or transfer results.
● Screw in all cable connectors correctly.
SIMATIC MV500
Operating Instructions, 05/2019, C79000-G8976-C494-02
NOTICE
Grounding the device
Make sure that the device is grounded through one of the screw points in the housing.
6
75
Advertisement
Table of Contents
