2 – Installation
2-12
© Teledyne Limited
DPN 402197 Issue 7.1
Figure 2-8: System interconnection diagram
Table 2-1: System interconnection diagram key
Item
Description
A
The topside computer accepts an AC electrical supply in the range 90 to 264V a.c. The power demand is a
maximum of 250VA (SDC) or 300W (HydroPACT RMC10).
B
RS232 data communications from the topside computer to the ROV umbilical (2-wire or 4-wire 20mA digital
current loop is available on installations with an SDC topside computer only).
C
Power and communications cable (or ‘ROV Tail’) from the ROV to the SEP. This cable has cores to carry the
communication signals that pass between the SEP and the topside computer, and power cores for connec-
tion to the ROV electrical distribution system.
D
All sub-sea connections are to sealed ports on the SEP. You must fit a proper blanking plug to any port that
does not have a connector before you deploy the System underwater.
E
The coil connection cables each have a single 12-way connector for connection to the SEP, and three 8-way
right-angled connectors for connection to the detection coils. You must connect the three short branches of
the cables to the correct coils in each triad as identified by their attached labels ‘vertical’, ‘lateral’ and ‘fore-
aft’.
F
Coil triads. There are three identical detection coils in each triad.
G
Altimeter cable. The SEP provides power to, and communicates with, the subsea altimeter through the sub-
sea altimeter cable.
H
Altimeter. Note that only certain types of altimeter can be connected directly to the SEP.
Electrical Supply
Communications
A
B
ROV umbilical (user supplied)
D
E
F
C
E
F
G
H
