2 – Installation
DPN 402197 Issue 7.1
© Teledyne Limited
2- 15
colours. Refer to this table as you make the connection to the ROV electrical distribution system. All
cores in the cable are 1.34mm² cross-section.
Lay the power and communications cable from the ROV electrical distribution system to the SEP.
Route the cable along fixed ROV frame members and use cable clips to secure it at regular intervals.
Avoid applying any sharp bends or other points of mechanical stress along the cable.
Connect the power and communications cable to the ‘Power/Comms’ port on the SEP. Tighten the
knurled locking collar by hand only.
Do not over tighten this connector.
CAUTION
It is very important to provide a good ground connection on pin number 2 of the
cable. A poor or a missing connection will severely degrade the performance of
the 350 system. You must make all connections to the ROV using waterproof
connectors or splices of good quality.
2.3.3.2 Alternative Communication Methods
WARNING
There is a risk of death or serious injury by electric shock when you work inside he
SEP. Only a competent engineer who has the relevant training and experience
should open any part of the 350 system. Power-off and isolate the equipment from
the mains supply voltage before you open any part of the 350 system. Observe all
relevant local and national safety regulations while you perform any maintenance
work on the 350 system.
Re-fit all safety covers and ground connections to the 350 System before you re-
connect the equipment to the mains electrical supply.
Many components are susceptible to damage due to electrostatic discharge. You
must take precautions against such damage: These precautions include the use
Table 2-2: Power and communications cable
Connector Pin Number
(and Wire number)
Function
Core colours
1
(N)
Supply neutral line/L2
Blue
2
(E)
ROV ground
Green/Yellow
3
(L)
Supply 110V live/L1
Brown
4
(wire number 1)
Comms 1
Orange
5
(wire number 2)
Comms 2
White
6
(wire number 3)
Comms 3
Red
7
(wire number 4)
Comms 4
Yellow
Pin 8
(no connection)
Linked internally to the cable screen
Screen
(wire identity S)
Link this wire to the cable screen
Green
