Simrad RF40 Manuale utente
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RF40 Rudder Feedback unit
Installation guide
The RF40 is a resistive rudder feedback unit, suitable for autopilot systems with a
NAC-1 or NAC-2 autopilot computer.
¼Note: The RF40 can not be used with the NAC-3 autopilot computer.
The RF40 might also be used with autopilot computers that have analog rudder
feedback input.
¼Note: Do not remove the transmitter lever from the feedback unit.
¼Note: The unit is factory adjusted and requires no further adjustment at
installation than described below.
Mounting location
The RF40 unit (A) mounts close to the rudder, and is mechanically linked to the
rudder tiller arm (B) or rudder quadrant.
Select a mounting location for the RF40 unit according to the illustration
• X1 = X2: min 150 mm (5.9”), max 345 mm (13.6”)
• Y1 = Y2: min 44 mm (1.7”), max 130 mm (5.1”)
X2
X1
Y1 Y2
X1 = X2
Y1 = Y2
B
A
A
B
2 |
Installation
The RF40 lever (C) has two slots for the transmitter link (D). The slots enable
maximum exibility to provide the 1:1 mechanical linkage relationship.
D
E
E
CB
Y1 Y2
1. Turn the helm to set the rudder tiller arm (B) to approximate center position
2. Mount the RF40 unit to a suitable platform
• If required:
-add blocking material under the RF40 to adjust the height of the
transmitter lever to be level with the rudder tiller arm
-cut the length of the transmitter rod (D) to move the feedback unit closer
to the rudder post
3. Rotate the RF40 lever to center position
• the marks (E) on unit and on the lever should be aligned
4. Rotate the RF40 unit so that the rudder lever is parallel with the rudder tiller arm
5. Set the transmitter link to the inner limit of the outer slot if possible
6. Drill and tap the rudder tiller arm so that the Y2 dimension is equal to the Y1
dimension
7. Attach the ball joint to the tiller arm, and connect the transmitter rod to the ball
joint at the rudder tiller arm
8. Tighten the mounting screws for both the RF40 and the transmitter rod ball
joint.
9. Observe the feedback unit while someone turns the helm through the complete
rudder travel hard-over to hard-over, and verify that the mechanical linkage
moves freely.
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Wiring
The RF40 is equipped with a 15 m (49 feet) cable with connector (A). The unit
connects to the NAC-1/NAC-2 autopilot computer’s three pins rudder feedback
socket (B).
A B
3
12
3
1 2
Function Color
1+5 V DC Red
2Signal Yellow
3-0 V DC Black
Dimensional drawings
RF40
177 mm (6.97”)
55 mm
(2.16”)
99 mm (3.90”)
65 mm
(2.56”)
Transmitter link
345 mm (13.6”)
4 |
Spare part
20193454 Transmitter link
Technical specications
¼Note: The most up-to-date specications list is available at
www.simrad-yachting.com
Physical
Dimensions See gure
Weight 0.5 kg (1.1 lbs.)
Material Arnite T06 200 PBT
Compass safe distance 1.0 m (3.1 ft.)
Mounting Horizontal, vertical or upside down
Cable 15 m (49 feet) with connector
Transmitter link Stainless 345 mm (13.6”) with 2 ball joints
Electrical
Supply voltage 5 V DC
Power consumption 2.5 mW
Environmental
Operating temperature -25 to +55 °C (–13 to +130 °F)
Storage temperature -30 to +70 °C (–22 to + 158 °F)
Waterproof rating IP56
Interface
Rudder angle +/-120 degrees
Output signal 0 - 5 V DC
Resistance value 10 K ohms
Accuracy +/-0.25° within +/-5°, otherwise +/-0.5°
Repeatability +/-0.1°
*988-12045-001*
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