Simrad RF25 Manuel utilisateur

Instructions

RF25 Rudder Feedback (P/N 22014302)

GENERAL

The RF25 is designed for connection to the

SimNet network. It is equipped with

transmission link and 5 m (16 feet) of SimNet

cable with connector. It transforms the

angular travel of the rudder to a digital signal

read by the autopilot steering computer. The

RF25 transmits the rudder angle even if the

autopilot is switched off.

INSTALLATION

The RF25 Rudder feedback unit mounts close

to the rudder, and is mechanically linked to

the rudder tiller arm or rudder quadrant. Refer

to the figure below for recommended

mounting arrangement.

Do not remove the transmitter lever from the

feedback unit. The unit is factory adjusted and

need no further adjustment at installation than

described below.

Turn the helm to set the rudder tiller arm to

approximate centre position.

Set the mounting location to be in accordance

with the figure. The centre of the feedback

unit should be in line with the centre of the

rudder post. Mount the feedback unit to a

suitable platform using the screws provided. If

necessary, add blocking material under the

feedback unit to adjust the height of the

transmitter lever to be level with the rudder

tiller arm.

Due to space limitations, it may be necessary

to cut the length of the transmitter rod to

move the feedback unit closer to the rudder

post.

Rotate the feedback transmitter lever to

centre position. (Use the alignment mark to

line up the transmitter lever to be opposite the

cable entry into the feedback.)

Carefully observe the alignment marks. A

rudder feedback alarm may be the result if the

alignment instructions are neglected.

Note that the transmitter lever has two slots

for the transmitter link. The slots enable

maximum flexibility to provide the 1:1

mechanical linkage relationship. As a starting

point, set the transmitter rod to the inner limit

of the outer slot if possible. Drill and tap the

rudder tiller arm so that the Y1 dimension is

equal to the Y2 dimension (Use 4.2 mm drill

and 5 mm tap). Attach the ball joint to the

tiller arm, and connect the transmitter rod to

the ball joint at the rudder tiller arm.

Tighten the mounting screws for both the

feedback unit and the transmitter rod ball

joint.

Observe the feedback unit while someone

turns the helm wheel through the complete

rudder travel H.O. to H.O. and verify that the

mechanical linkage moves freely.

Page 2 of 2

ELECTRICAL CONNECTION

RF25 Rudder Feedback Unit

8-16V SimNet supply SimNet

T-joiner

SimNet backbone

SimNet drop cable

RF25 connection to SimNet

TECHNICAL SPECIFICATIONS

Dimensions:...................See figure

Weight:.........................0,5 kg (1,1 lbs)

Material: .......................Arnite T06 200 PBT

Environmental Protection: IP56

Safe distance to compass: 1,0 m (3,1 ft.)

Temperature range:

Operation:..............–25 to +55 °C

(–13 to +130 °F)

Storage:.................–30 to +70 °C

(–22 to + 158 °F)

Mounting: .....................Horizontal, vertical,

or upside down

Supply and interface: ......8-16V via SimNet

Power consumption:........0,4W

SimNet Network load factor (NL): 1

SimNet ports (input/output): 1

Cable supplied:...............5 m (16’) SimNet

cable with connector

Rudder angle: ................±120 degrees

Output signal: ................SimNet/NMEA2000

PGN127245

Accuracy: ......................±0.25° within ±5°,

otherwise ±0.5°

Repeatability:.................±0.1°

NMEA compliant

Transmitter link:.............Stainless 345 mm

(13.6") with 2 ball

joints.

Ball joint stud for rudder arm requires 4.2 mm

diameter hole and 5 mm tap.

SPARE PARTS

22014286 RF25 Rudder Feedback

w/accessories

20193454 Transmitter link

44133122 Transmitter rod

M5x325mm

20193624 Ball joint Ass'y (2)

RF25 Dimensions

Transmitter Link – dimensions

20222552 / A

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