SICK TiM55 Series Mounting And Installation

Technical Information Chapter 4
TiM55x/56x/57x
Electrical installation
8015883/YZK8/2016-07-07 © SICK AG · Germany · All rights reserved · Subject to change without notice 17
DANGER
Risque de blessure ou d’endommagement dû au courant électrique !
Des courants d’équipotentialité entre le TiM5xx et les autres appareils mis à la terre de
l’installation peuvent avoir les effets suivants :
 tensions dangereuses sur le boîtier métallique du TiM5xx par ex.
 comportement défectueux ou destruction des appareils
 endommagement ou destruction du blindage des câbles par échauffement et par
combustion des câbles
 Prendre des mesures selon les indications suivantes là où les caractéristiques locales
sont défavorables et ne permettent pas un concept de mise à la terre sûr (même
potentiel de terre dans tous les points de mise à la terre).
Remedial measures
The primary solution for avoiding equipotential bonding currents on the cable shields is to
guarantee low-impedance and current-conducting potential equalization. If this is not pos-
sible, the following two solution approaches are intended as suggestions.
Important It is not advisable to open up the cable shields. This can cause compliance with EMC limit
values for the devices to be no longer guaranteed.
a) Measures for widely distributed system installations
On widely distributed system installations with correspondingly large potential differences,
we recommend setting up local islands and connecting them using commercially available
electro-optical signal isolators. This will attain maximum resistance to electromagnetic in-
terference, while observing all requirements of EN 60950-1 at the same time.
The ground loop is isolated by using the electro-optical signal isolator between the islands.
Equalization currents are prevented on the cable shields within the islands by conductible
equipotential bonding.
b) Measures for small system installations
For smaller installations with only slight potential differences, insulated installation of the
TiM5xx and of peripheral devices may be a sufficient solution.
Actuators for
switching outputs
grounding point 1
Electro-
optical
signal
isolators
Electro-
optical
signal
isolators
grounding point 2
= metal housing
= shielded electrical cable
= fiber optic cable
grounding potential difference
U
TiM5xx

SICK TiM55 Series Specifications

General

Brand	SICK
Model	TiM55 Series
Category	Accessories
Language	English