Digital Input Expansion Module (12 CH) – 12DI-EXP-N2K
Across Ocean Systems Ltd.
Rev 1
12DI-EXP-N2K
14 of 22
6.3
C
ABLING
R
ECOMMENDATIONS
If the ground connection is shared throughout the vessel, including the ground to Vitals, all
that is needed to activate a digital input is to connect it on the load side of the switch for the
device being monitored. Make sure that the reference terminals,
S1,
S2
, or
S3
are connected
to the appropriate reference. Ensure that there are no large ground loops.
Note that if voltage source is connected to S1, S2 or S3 to apply appropriate fuse protection
(1A) to protect the wire and the source (ABYC standard calls for protection within 1’ from the
source)
Follow recommended wiring practices and standards as per relevant local codes.