Raymarine Autohelm 4000, User Manual

Since the autopilot is microprocessor

based it is very important that voltage
losses in supply cables are minimised.
Supply cables should therefore be as short
as possible and of no less size than shown

in the following table.

Lead Length

Copper Area

AWG

Up to 

 (8ft)

1 

16

Up to 

14

To avoid the risk of confusing the power

supply and motor cables the power supply

cabling should be completed before
wiring the drive unit.

DRIVE UNIT CONNECTION

The drive unit is supplied with 

of two core cable which is passed through
the pedestal or guard rail and connected

back to the control unit socket as follows:

l 

Drill 

 diameter hole 

front face of the pedestal.

l 

Select one of the two grommets

supplied and use it  where the drive
unit cable passes through the pedestal

l 

 the cable 

down 

 pedestal 

 close lo the 

 base using

 clip provided.

l 

Run the cable back to the control unit

socket (Fig. 16) and connect as follows:

Fig. 16

DRIVE UNIT

EARTH

POWER SUPPLY

(Blue)

(Pre-wired at

\

Factory)

If it is necessary to extend the drive unit

cable, the 

 should be as short as

possible and of no less size than shown in

the following table.

Extension Cable

Copper Area

Length 

A W G

Up to 

1 

16

Up to 

 (13ft)

2 

14

Having attached the cable to the

control unit socket, the socket may be
screwed 

 place using the four self

tapping screws provided (Fig. 17).

Fig.17 

Accessory Connection

The 

 4000’s accessories plug

into the 

 unit to facilitate stowing

and servicing. To ensure reliable

connection each plug incorporates a
locking ring which should be turned
clockwise to secure.

The 

 should be connected   

the socket marked 

Vane 

and the 

held remote to the socket marked

Remote.

 ATTACHMENT

The 

 attachment is normally

mounted centrally on the after rail where
it can be sited in clear wind on both tacks.

The 

 mounting mast is clamped

to the after rail by the two ‘U’ bolts

to allow the 

 head 

plugged into the top of the mast (Fig.’ 19).

 cable can then be

back and 

 into the 

Note 

The 

 head is supplied

with the vane detached for ease of

packing. The vane is easily assembled to

the head and secured by means of the

circlip provided (Fig. 20). Care should be
taken to ensure that the small 

 is

provided (Fig. 

 The interconnecting

cable should be brouqht throuqh the slot

correctly located in the groove.

 UNIT 

 E

(to be wired on

installation)

 UNIT

‘PIN 3

(Blue to PIN 2)

(Brown)

8