ABB S800 I/O - Page 67

*HQHUDO,QIRUPDWLRQDQG,QVWDOODWLRQ8VHU¶V*XLGH
6HFWLRQ &KHFNOLVWV
3BSE 020 923R101 57
  3RZHU6XS SO\
7DEOH  6XSSO\
,WHP &RQFHUQLQJ &KHFN
A.C. Power Mains
Connection in
cabinet
Phase
Return
Protective ground (if distributed)
1RWH
There must be no breaks in the
protective ground conductor to the PE
terminal.
Fuse Incorporated in conductors
Connection of
network
No unsuppressed load on same finale circuit
from distribution box
Use of interference-
sensitive power
supply units
Special isolation transformer for electronics
supply must be used
Internal distribution Incoming power supply (110, 230V) must be
separated from other cables by 50 mm (2") or
more
D.C. (floating
battery)
Grounding, supply Negative pole to neutral ground terminal of
cabinet directly at entry to cabinet. If
grounding of the battery is not permitted then
an isolating d.c./d.c. converter is required
D.C. (grounded
battery)
Connection Via isolated d.c./d.c. converter unless the
main d.c. power supply is grounded at the I/O
terminals
I/O Station Supply Max. power output < 90% of regulator capacity