D3-DU 3xx/A, /BConnections and wiring
Project engineering manual V1.09
54
© KEBA 2021
6) Tighten screws again and close the cover.
The modules are now connected with 24 V rails.
WARNING!
Warning of electric shock!
Operation without closed cover flap and without seperating strip in the D3-
DP 3xx/x is not permitted!
6.3 Grounding
1) Ground each device!
Connect the PE connections (screw socket M4) on the supply module,
the axis modules and the controller (e.g. with grounding bracket) in se-
ries as shown in the following figure. Make a connection from one of the
devices to the PE rail (main earth) in the cabinet.
As the leakage current is > 3,5 mA, the following applies to the PE con-
nection: Use protective conductors with the same crosssection as the
mains cables. If the crosssection of the mains cable is < 10 mm
2
the PE
connections are to be doubled, or a protective cable with a minimum
crosssection 10 mm
2
copper is to be laid.
2) Also connect the PEconductor terminals of all other components, such
as main filters etc. in a star configuration with the PE bar (main earth) in
the cabinet.
These further components are only required for the supply module.
Information
Material of the cooler or cold plate: aluminium with high conductive trans-
parent passivation.
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