Distributed by Any reference to Raytheon or RTN in this manual should be interpreted as Raymarine. The names Raytheon and RTN are owned by the Raytheon Company.
Installation & Operating Handbook Nautech Limiied, Anchorage Park, Portsmouth Hampshire, PO3 STO, England. Telephone (0705) 693611, Telex 86384 NAUTEC G.
CONTENTS 1. 1.1.1 1.1.2 1.1.3 1 .1.4 1.1.5 1 .1.6 1.2 1.2.1 1.2.2 General Description Course Computer Control Unit Fluxgate Compass RuddepReference Transducer Auxiliary Alarm Radio Navigation Interface Hydraulic Drive Units Type 0 Hydraulic Drive Type 1 Hydraulic Drive 2. Installation 2.1 .l Course Computer 2.1.2 Control Units and Radio Navigation Interface 2.1.3 Fluxgate Compass 2.1.4 Rudder Reference Transducer 2.1.5 Accessories Hydraulic Drive Unit 2.2 2.2.1 Type 0 Installation 2.2.
1. GENERAL DESCRIPTION Congratulations on choosing the Autohelm PowerPilot. It offers outstanding self steering capability for a wide range of modern powercraft equipped with hydraulic steering. The PowerPilot uses microprocessor based technology and easy to use control pads to give you total command under autopilot control without the need for constant adjustments.
1.1.4 Rudder Reference Transducer 213mm (8.37in) The rudder reference transducer provides the course computer with a precise rudder position. It is mounted on a suitable base adjacent to the rudder stock. The interconnecting cable connects directly to the course computer connector unit. -1 82Smm 1.1.5 Auxiliary Alarm (Cat. No. 2035) The autopilot is provided with an automatic off course alarm system which sounds from all control units and provides sufficient audible warning under most conditions.
2. INSTALMTION WARNING The Autohelm PowerPilot requires correct installation if it is to provide accurate safe self steering. Whilst designed for simple installation we strongly recommend that the system should be installed professionally or alternatively professional advice be obtained if you intend to install the system yourself. The manufacturers can accept no liability for any claims arising from incorrect installation or product useage. 2.1.
Removing a Control Unit l Using a flat lever gently unlock the securing pads starting at one corner. l Do not use excessive force. 0 The unit may be re-attached by pressing it’back onto the security pads. 2.1.3 Fluxgate Compass Thread the interconnect cable through the 17mm (518in) hole, peel off the backing from the pads (Fig. 5). l Press the unit onto the mounting surface maintaining pressure for 30 seconds to ensure a strong bond.
the rudder reference unit arm and tiller arm. If it is more convenient, the rudder reference unit may be mounted upside down (label downwards), but if this is done, the red and green wires must be reversed in the connector unit. It is important to ensure that dimensions A and B (fig. 11) are the same at both points and that when the rudder is amidships the unit arm is opposite the cable gland and makes an angle of 90° with the connecting bar. Fig.
2.2 HYDRAULIC DRIVE UNIT General guidelines The hydraulic drive unit should be mounted clear of spray and the possibility of immersion in water. It should be located as near as possible to the hydraulic steering cylinder. It is important to bolt the hydraulic drive unit securely to a substantial member to avoid any possibility of vibration that could damage the inter-connecting pipework. There are three basic types of hydraulic steering system, and these are illustrated in Fig. 15.
. I 2.3 CABLING AND POWER SUPPLIES 2.3.1 Signal Cabling Cable interconnections between all sub system modules are shown schematically (in Figs 1 and 12). All peripheral units connect to the connector unit where they are permanently hard wired to colour coded connector blocks situated on a central printed circuit board (Fig. 19). The end face of the connector unit is fitted with ten blanking discs (Fig. 20).
3. OPERATION The power supply must be led from the main distribution panel and protected by means of a 25 amp fuse or current overload trip switch. A separate 5 amp fuse must be fitted in the electronic power supply cable. It is very important that both the electronic and heavy duty power supplies are isolated by a switch in the positive supply line.
3.2.3 Operating Mode indication and Course Display 3.2.4 Off-Course Alarm When the autopilot is set to Auto mode a built in off-course alarm is automatically set up. The off-course alarm will sound from all control units when the vessel deviates for any reason from the original course by more than 15“ for over 20 seconds. If an auxiliary alarm is fitted this will also be sounded after a one minute delay to allow the watchkeeper to take corrective action.
4. SEA TRIALS left in this condition the rudder will eventually be driven hard over. If, however, the vessel were moving through the water, the progressive application of additional helm would eventually return the vessel to the correct course with the necessary standing helm applied. Return to course can be simulated by keying - 10 (to return to the current heading). The progressive application of standing helm will cease when the fluxgate senses that the course error has been removed. 3.3.
5. OPERATING HINTS 4.2 RUDDER CONTROL ADJUSTMENT The rudder control setting recommended on page 22 will provide stable control for initial sea trials. However, power craft can vary widely in their response to the helm and further adjustment of the rudder control setting may improve the Autohelm’s steering characteristics.
6. MAINTENANCE 7. FAULT LOCATION PROCEDURE The autopilot is one of the most used and hardest working items of equipment on board, and therefore must receive its fair share of attention and routine maintenance. Regular inspection of the installation is recommended in the following areas where applicable. 1. Check that Hydraulic Steering systems are free from leaks and trapped air. Bleed when necessary to remove air from the system. 2.
8. WARRANTY, AFTER SALES SERVICE LIMITED WARRANTY Nautech or its appointed Distributors or Service Centres will, subject to the conditions below, rectify any failures in this product due to faulty manufacture which becomes apparent within twelve months of its purchase date. Equipment used in the country of purchase should be sent directly to the authorised Distributor for that country or its appointed Service Centres.
10. 9.
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