User manual RAYMARINE AUTOHELM 5000 ANALOG AUTOPILOT

[. . . ] 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 and Operating Handbook ANNOGUE Autohelm" . ;-: AUTOHELM 5000 The Autohelm 5000 is a modern high performance autopilot specifically developed for sailing and motor vessels of up to 40'(13m) LOA. It is exceptionally easy to operate and its advanced micro-electronic control circuit gives outstanding steering performance. The Autohelm 5000 is distinguished by its automatic course locking capability which permits change-over from manual to automatic steering by a single push-button control. [. . . ] During the installation of the system it has not been necessary to keep track of the connection sense to the hydraulic steering circuit since operating sense of the autopilot can be corrected if necessary by reversing the polarity of* pump drive motor connections (see section 3. 3. 1). To check correct phasing of the_autopilot, switch to Duty and rotate the Steer control clockwise. If opposite rudder movement occurs, reverse the phase switch direction to correct as described in Section 3. 2. The gain control located on the back of the Control, Unit sets the rudder response of the autopilot to match the particular installation. 16. CONNECTION OF HYDRAULIC LINES TO PUMP DOWTY SEAL ' BSP FITTING Assembly for W' BSP Line Fitting Fig. 15 DOWTY SEAL I `h" NPT FllTlNG #=%I - Assembly for l/d' NPT Line Fitting ii3 IN3 50b 3 0 - 1 RECOMMENDED GAI N CONTROL SETTINGS 5- O- 1 _#" __. ii. 15 / 1 I 2 I 3 I 4 II 5 " 6 7 8 11 910 1 GAIN CONTROL AVERAGE SE-tllNG Fig. 16 13 2. 3 CABLING AND POWER SUPPLIES 2. 3. 1 SIGNAL CABLING Cable inter-connections between system subunits are shown schematically in Figs. The interconnecting multi-core cable between the control unit and drive unit is 20 feet (6m) long, and is supplied with the control unit. All other interconnecting cables are supplied with their related sub-unit and are also 20feet (6m) in length. All 7 core cables are supplied with pre-wired waterproof connectors and are extendable in 20 feet (6m) increments by the addition of standard cable extensions (Cat. Cable connector clamp nuts should be securely tightened to ensure watertight joints. All cables should be run at least 3ft (1 m) from existing cables carrying radio frequency or pulsed signals, and should be clamped at 1. 5 foot (05m) intervals. 2. 3. 2 DC SUPPLY CABLE As a general rule the DC supply cable to the drive unit should be kept as short as possible, and have a conductor area of 1 . O sq. mm per metre run to minimise voltage drop. Example: Length of cable Conductor area Cable size 2. 5 sq. mm 50/0. 25mm Up to 2. 5m Upti4m 4 scpnm 56/0. 3mm The two supply cables must run directly from the vessel's battery or alternatively from the main distribution panel, and a 20 amp fuse or overload trip should be included in the circuit. It is important not to tap into supplies to other into supplies to other equipment to avoid the possibility of mutual interference. The drive unit is supplied with 1. 5ft (0. 5m) power supply cable tails. These should be connected to the main power supply cable via a heavy-duty terminal block. The red cable tail should be connected to the positive supply and the black cable to the negative supply. If polarity is accidentally reversed the equipment will not operate, but no damage will result. The drive unit case must be bonded to the metal hull or engine frame and a heavy duty conductor (2. 5mm2) should be used for this purpose. 14 3. 0 OPERATION 3. 1 BASIC PRINCIPLES The following description of the Autohelm 5000 principle of operation will help in providing a complete understanding of its controls. The control unit houses an extremely sensitive autosetting electronic compass. When the autopilot is in operation, deviation from course is continuously monitored by the compass and corrective rudder is applied by the drive unit to return the vessel to course. [. . . ] The optimum range of adjustment is easily found by experiment. . 6. 0 OPERATING HINTS Unlike sailing yachts, power vessels do not generally suffer with violent changes in trim, and thus, provided the operating instructions are carefully followed, extremely good course holding performance will result in all weather conditions. Sailing yachts are very different since in gusting wind conditions violent changes in trim often occur. When a yacht is sailing badly out of balance, sudden gusts will generally cause it to luff violently to windward. When hand steering, the tendency is overcome by applying sufficient weather helm to maintain the original heading. [. . . ]