5
COMMISSIONING AND CONFIGURATION
8022483/108R/2018-07-09 | SICK
SAFETY-RELATED 2D LIDAR SENSOR | TIM361S
19
Subject to change without notice
Due to insufficient ground potential equalization, voltage differences arise between
grounding points 1 and 2. The current loop closes via the shielded cables and metal
housing.
DANGER
Risk of injury/risk of damage due to electrical current!
Potential equalization currents between the TiM361S and other grounded devices in
the system can have the following effects:
Dangerous voltages on the metal housing
Incorrect function 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), take measures
in accordance with the following formats.
Remedial measures
The most common solution to prevent potential equalization currents on cable shields
is to ensure low-impedance and current carrying equipotential bonding. If this is not
possible, the following solution approaches serve as a suggestion.
Important!
We expressly advise against opening up the cable shields. This would mean
that the EMC limit values can no longer be guaranteed.
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 measure achieves a high
degree of resistance to electromagnetic interference.
Control for
switching inputs
Actuators for
switching outputs
TiM361S
Voltage
supply
Closed current loop with
equalizing currents via cable
shield.
Grounding point
Ground potential
Grounding point
= Metal housing
= Shielded electrical cable
