Raymarine 150 - Page 42

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Step 9: Integrate the System 33

Step 9

Isolated control unit, single power supply

If you have two control units, we recommend that you connect one to

each SeaTalk terminal. In the following illustration:

• the course computer provides power to the SeaTalk system

• one control unit is connected on its own to SeaTalk A so it is

isolated against any possible failure of SeaTalk B

If the SeaTalk B line fails, the isolated control unit will switch to

Standby mode as a safety measure. By pressing

auto on the isolated

control unit you can regain full autopilot control.

* Note: Depending on the number of SeaTalk units and the total length of SeaTalk

cabling, you may need to provide power supply to each end of the SeaTalk bus

(‘ring-main’ style). Refer to the instrument handbook for more information.

Control unit

D5391-2

ST60

instruments

Single control unit, single power supply

SeaTalk bus

SeaTalk A

Extra connection on larger SeaTalk systems*

Course computer

power supply

(via breaker/fuse)

Isolated control unit, single power supply

Second

control unit

Isolated

control unit

D5392-2