Eddyfi Technologies TSC U41, User Manual

Page: 18 / 72

System Overview
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Figure 1-5
ROV Connections
1.
Decide on the communications protocol to be used through the ROV system.
2.
Ensure all mains switches are OFF.
3.
Connect the topside unit to the mains supply using the RCD protected lead. If the local
supply is 230Vac then the included transformer will be required.
4. Connect the computer to the U41D topside unit, using the Ethernet cable. If the
computer needs to be powered from the mains supply, instead of running from the
internal battery, connect the mains lead to the 110-120Vac output connector on the
topside unit. For more advanced connection options, see Configuring the
communications on page 8.
5.
Connect the test and integration deck cable to the topside unit and subsea bottle.
6.
Test the main cable RCD by turning ON the mains supply to the lead (with the topside
unit still switched OFF). Press the Reset button and verify that the red indicator is
showing. Press the Test button and confirm that the red indicator is removed. Press the
Reset button again and check that the red indicator reappears and remains. If this does
not function, or if during operation the RCD trips repeatedly, suspend all operations, turn
off mains supply and seek specialist advice. Note that in this configuration, the topside
unit does not provide DC power to the instrument via the umbilical, this instead comes
from the ROV supply.
7.
Check to insure the 110v indicator panel is illuminated.
8. Turn on the power to the U41 system by pressing the power switch on the topside unit
panel. If the blue indicator light in the switch does not light, press the reset button in the
Safety Trip area.
9.
The subsea bottle will take approximately 20 seconds to initialise. Switch on the computer
and start the ASSIST™ software.
10.
Configure the communications between topside unit and subsea bottle to match the
protocol decided in step 1. See Operation with ROV on page 11. Check that the subsea
bottle can be connected to using the new protocol.
11. Power down the topside unit, remove the deck cable and secure the subsea bottle to the
ROV.
12.
Temporarily connect the free end of the Eddyfi supplied subsea communications whip to
the ROV subsea cable, supplied by the ROV team. The power wires and the
communication protocol wires, decided in step 1, must be connected.
13.
Power up the ROV port and test that the correct power voltages are present on the
bottle end of the Eddyfi supplied subsea whip, see Umbilical on page 18 Power down
the port.