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2.6
Electrical connection
2.6.1 Ground connection
Recommendation for ground strap between controller and system (chassis)
Material
L (Length max.)
copper tinned
200 mm
Recommended torque: 1,3...1,7Nm
Note: Connection plates of ground strap must be total plane for a good electrical contact!
Note: 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.
Note: Avoid low chassis cross section to the system PE connection. (Min. same cross section as ground strap)
VAT Vakuumventile AG, CH-9469 Haag, Switzerland
Tel +41 81 771 61 61 Fax +41 81 771 48 30 CH@vatvalve.com www.vatvalve.com
Installation, Operating & Maintenance Instructions
Series 612 DN 40 (I.D. 1.5"), RS485
B1 (min.)
25 mm
d1
B1
Ground connection
Valve controller
∅
B2 (min.)
d1 (
25 mm
4.5 mm
B2
L
Ground strap
∅
)
d2 (
)
customized
Chassis (FE)
(Functional Earth)
289917EA
2011-07-07
System
PE
d2
13/69
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