FI002K0018v1530hUK – THS/21 Instruction manual for installation, use and maintenance
3
INSTALLATION
ORIGINAL
INSTRUCTION
61
3.1.3 Electrical installation general rules for a correct compatibility
Electrical and electronic devices (and related cables) in the installation environment, can generate
interference signals for the Metal Detector, due to their position or caused by the presence of
uncontrolled paths, inside the ground equipotential circuit, for the generated noise currents (ground
loops).
The following are the main guidelines to ensure the best compatibility of the installation environment,
which, however, depends on the operating conditions of the Metal Detector and on the characteristics
of the environment in which it is installed.
It is therefore recommended to define the installation (laying and installation of cables, motors and
other electrical/electronic devices involved in the installation environment) only after the final checks
of correct installation and configuration (par.3.12) of the System.
3.1.3.1 Power supply of other devices.
- Connect the System power supply and ground connection, directly and solely to the main
electrical panel, using a three-pole cable (with adequate section, see par. 3.5.7).
- Keep all power cables of other devices, as far as possible from the Probe aperture (>10DH),
from the power supply cable of the CEIA System and from all signal cables connected to it.
It is recommended to use shielded signal cables, with the shield connected to ground only
from the side of the power supply box.
No power cable must pass along the conveyor belt structure.
In case of CEIA Integrated Systems fitted with cable trays, they are to be used only with cables of
the System itself and signal cables from other in-line devices.
- Do not connect in any way power supply cables of other devices inside the Metal Detector
power supply box.
Example with THS-FBB
L
: Power supply cables;
C
: Metallic connections;
M
: Metallic pipes;
N
: Metallic pipe reserved for CEIA System power line;
K
: Insulated connections;
S
: Metallic structure of the building;
P
: CEIA System power cable;
A
: Power cables of other devices
