VAT 651 Series - Ground Connection Details

INSTALLATION Series
651
24/99 Edition 2014-07-10 605451EC
4.4.1 Ground connection
Recommendation for ground strap between controller 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
sample picture
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)
System
Valve controller
Ground
connection
Chassis (FE)
(Functional Earth)
B1
B2
d1
d2
L
Ground strap
PE
Recommended torque: 1,3…1,7Nm