Electrical connection
7
EcoGuide compact web guide control
51/70
7.4 Ensuring equipotential bonding
Electrostatic charges (ESD) must not discharge via the system. De-
vices for discharging must be installed before and after (in the
web running direction) the installed system.
In the contact areas of connections, remove the paint as this acts
as an insulator and prevents equipotential bonding.
►
Install conducting connections that permit equipotential bond-
ing of low and high frequencies between the individual ma-
chine parts or cable ducts.
►
Install ESD discharge devices before and after the installed sys-
tem.
►
Connect all components of the system with the same earth that
is connected to the machine.
►
In the case of screwed connections, use serrated washers to
ensure a conducting connection with the unpainted surface
(
see figure 13
).
►
Remove the paint coating in the contact area.
Fig. 27: Use of fan-type washers
①
Screw
②
Nut
③
Fan-type washer
④
Washer
⑤
Earthing cable
Through hole
Threaded hole
