Series 642 INSTALLATION
742280ED Edition 2017-11-24 23/
4.5.1 Ground connection
Recommendation for ground strap between controller ground and system chassis.
Material L (Length max.) B1 (min.) B2 (min.) d1 (
∅
) d2 (
∅
)
copper tinned 200 mm 25 mm 25 mm 4.5 mm customized
•
Connection plates of ground strap must be total plane for a good electrical contact!
•
The connection point at chassis (FE) must be blank metal (not coated). It is also
possible to connect the ground strap at system chamber if it is well connected to
PE.
•
Avoid low chassis cross section to the system PE connection. (min. same cross
section as ground strap)
d2
Chassis (PE)
(Protective Earth)
B1
B2
d1
L
PE
Recommended torque: 1,3…1,7Nm
Ground strap
System
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