Rudder angle indicator User`s Manual
Contents
1. a Woo m A NSOd a umd id A9E 8 9A a gt Iz OFFSET MODEL DNR 104 Figure 4 DNR 104 DNR 104P indicator is supplied with SS plate Bolt on 4 hole on the plate 4 5 5 108 120 168 6 J 180 Figure 5 DNR 104P2. TESTING After wiring the rudder angle sensor Rudder Angle Indicator and then check that all wiring conforms to what is shown in Figure 6 switch on the master switch or breaker supplying power to the rudder angle indicator system Move the rudder to determine if the rudder angle indicator move in the correct direction If the rudder angle indicator moves the wrong direction reverse the white and red wires coming from the rudder angle sensor to the rudder angle indicator Figure 6 ADJUSTMENTS Move the rudder to the dead ahead position If the deal ahead is precisely known and the Rudder Angle Indicator is off adjust the length of linkage by rotating the ball joints on the both ends of the linkage Move the rudder to hard over port and starboard and check the indication is as expected Two factory pre calibrated trim controls are provided on the rear of rudder angle indicator e The offset control allows some adjustment of the dead ahead rudder indication making it easier to adjust the system while on sea trials If the indication is more than 10 degree off adjust the rudder angle sensor linkage rather than the offset trim control e The span control allows some adjustment of the Rudder Angle Indicator indication at the hard over rudder position This system is calibrated at the factory to be accurated within 3 degree if installed as per instruction If the Rudder Angle Sensor linkage geometry is not correct rudder tiller arm and r
3. der angle sensor arm is same height A as the rudder tiller arm A like Figure 2 5 B dimension should be same like Figure 2 Figure 2 Installation of Rudder Angle Sensor Figure 3 Dimension of Rudder Angle Sensor If the locking screw in the rudder angle sensor arm has been loosened or the arm removed from the rudder angle sensor re attached the arm and check the potentiometer When the rudder is dead ahead the electrical resistance between the black wires and the white should be 2 5k oh The potentiometer can also be centered mechanically be aligning the notch on the sensor shaft Careful to check the installation for any mechanical obstructions or binding of the linkage and correct it now before it becomes a problem The rudder angle sensor is supplied with 10 meter of shield cable Run the cable from the rudder angle sensor towards the rudder angle indicator ensuring that it is protected by a hose or conduit wherever it passes through fish or cargo holds or any other area where it could be damaged Rudder Angle Indicator Operating Power 8V 36VDC Dimmer Switch to adjust brightness Additional terminal for ON OFF of LED light function Span To adjust a maximum angle Offset To adjust a center angle DNR 104 indicator by itself can be mounted simply by drilling 86mm hole and securing with supplied mounting bracket B85 www seafirst co kr elelelele e 44O NO G31
4. udder angle sensor arm are not equal in height parallel or linkage rod is not 90 degrees when centered indication of the hard over positions will be off It is better to correct the linkage but if this is not possible the span control can be used Making a large correction for the linkage problem by using the span control can introduce errors in indication at the half deflection position and unequal indication at the hard over position RUDDER ANGLE INDICATOR SYSTEM RAI S series SEAFIRST PORT SEAFIRST ENGINEERING CO Address 205 1735 1 Song Jung Dong Gang Seo Gu Busan Korea Tel 82 51 831 1640 Fax 82 51 831 1641 http www seafirst co kr SEAFIRST GENERAL Seafirst Rudder Angle Indicator RAI S System consists of a Rudder Angle Sensor and Rudder Angle Indicator This system RAI S is suitable to install only one Seafirst Rudder Angle Indicator 08z souejsip XEN we JOTI LAVHS esqqnd Figure 1 RAI S system e Rudder Angle Indicator DNR 104 DNR 104P e Rudder Angle Sensor DSR 110 A9E 8 3a dAO NO G31 RUDDER ANGLE SENSOR 1 Rudder Angle Sensor is installed in the stern of the vessel close to tiller arm 2 A mounting base may have to be fabricated by installer to position the rudder angle sensor properly 3 Mount the linkage supplied with the rudder angle sensor at 90 degree from tiller arm like Figure 2 Bolt the ball joint to the tiller arm 4 The rud
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