4 Mounting and Wiring
4 - 18
CK3E-series Programmable Multi-Axis Controller Hardware User’s Manual (I610)
Each of these earthing methods is given below.
Equipotential bonding is an earthing method in which steel frames and building structures, metal ducts
and pipes, and metal structures in floors are connected together and make connections to the earth
trunk line to achieve a uniform potential everywhere across the entire building. We recommend this
earthing method.
The following figure shows an example of an equipotential bonding system.
Connect the main earthing terminal and building structures together with equipotential bonding conduc-
tors and embed the mesh ground line in each floor.
Connect the ground line of each control panel to the equipotential bonding system.
4-6-2
Earthing Methods
Equipotential Bonding System
Hub
Metal duct and pipe
Power device
Information device
Earth trunk line
Control panel
Control panel
Control panel
Main earthing terminal
Earth electrode
Equipotential bonding conductor
Building structure
Metal structure in floor
Noise source