SICK TiM55 Series Mounting And Installation

Chapter 4 Technical Information
TiM55x/56x/57x ranging laser scanner
16 © SICK AG · Germany · All rights reserved · Subject to change without notice 8015883/YZK8/2016-07-07
Electrical installation
4.4 Prerequisites for safe operation of the TiM5xx in a system
The TiM5xx is designed and tested for electrical safety according to the standard
IEC 61010-1 (ed. 3):
It is connected to peripheral devices (power supply, control, actuators) via shielded cables.
The cable shield e.g. of the supply line is therefore flush with the metal housing of the
TiM5xx. The device can either be grounded via the cable shield or via the two straight plates.
If the peripheral devices also have metal housing and if the cable shields also flush with
their housing, it is assumed that all devices involved in installation have the same ground
potential.
This is achieved by observing the following conditions for instance:
 mounting of devices on conducting metal surfaces
 professional grounding of devices/metal surfaces in the system
 low-impedance and current-conducting equipotential bonding between areas with dif-
ferent ground potentials if necessary.
If these conditions are not met, e.g. on devices in a widely distributed system across several
buildings, equipotential bonding currents may, due to different ground potentials, flow via
the cable shields between the devices, which can lead to dangers.
Insufficient ground potential equalization leads to voltage differences arising between
grounding points 1 and 2. The current loop closes via the shielded cables/metal housing.
DANGER
Risk of injury/risk of damage due to electrical current!
Equipotential bonding currents between the TiM5xx and other grounded devices in the sys-
tem may have the following effects:
 dangerous currents on the metal housing e.g. of the TiM5xx
 incorrect functioning or irreparable damage to the devices
 Damage/irreparable damage of the cable shield due to heating and cable fires
 Where local conditions are unfavorable and thus do not meet conditions for a safe
earthing method (same ground potential at all grounding points), carry out the mea-
sures below.
closed current loop
with equalizing currents
via cable shields
grounding point 2
grounding point 1
grounding potential difference
Actuators for
switching outputs
Power
supply unit
I
U
= metal housing
= shielded electrical cable
TiM5xx

SICK TiM55 Series Specifications

General

Brand	SICK
Model	TiM55 Series
Category	Accessories
Language	English