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Summary of Contents for Si-tex SP120
- Page 1 SP120 Autopilot User Manual v1 SI-TEX Main Office Address: 25 Enterprise Zone Drive, Ste 2 Riverhead, NY 11901 Tel: +1-631-996-2690 Email: service@si-tex.com Web: www.si-tex.com IMPORTANT: PLEASE RETAIN ON BOARD...
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Page 3: Table Of Contents
Contents Warnings SP120 Autopilot System Block Diagram Of Full System Installation Of System Components Display Unit Compass Rudder Feedback Unit GPS Wiring Connections Hydraulic Reversing Motor Connection Mechanical Reversing Motor Connection Initial Operational Settings Motor Direction – Automatic Set Up Motor Direction –... -
Page 4: Warnings
(SP120R only). manual mode when the vessel is stationary as the system will In addition the SP120 has to be continue to drive the rudder to the connected to a drive unit which end of its travel and damage the controls the rudder actuator system system can result. -
Page 5: Block Diagram Of Full System
The SP120 display provides full control of the autopilot system and indicates different modes for heading, course to steer and rudder angle. The system requires a supply voltage of 12 Volts DC. SI-TEX Marine Electronics - SP120 Autopilot 3 of 22... -
Page 6: Installation Of System Components
Installation of Display Unit System Components: Position: The SP120 Head unit should be mounted in a position accessible to the steering position and protected Ensure you have all the components of the autopilot. from direct rain or salt water • Select a dry position Tools required: •... -
Page 7: Compass
(bow) pointing in the same direction as the boat’s bow. Use non-magnetic screws (304 / 316 grade stainless steel) • Run cable to SP120 display position (keep away from other cables) • Connect compass cable to SP120 compass socket... -
Page 8: Rudder Feedback Unit
The direction indicated on the top of the RFU is correct b) No undue mechanical strain is placed on the feedback or linkage 6 of 22 SI-TEX Marine Electronics - SP120 Autopilot... - Page 9 Pin 4 TX Data (heading information) Pin 5 + GPS Input (Positive) Pin 6 - GPS Input (Negative) Note: Pin locations are relative to pin 1 which always has a dot adjacent. SI-TEX Marine Electronics - SP120 Autopilot 7 of 22...
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Page 10: Gps Wiring Connections
GPS Wiring Connections Notes: 1. With SP120 in MANUAL yellow Pin connections from rear of plug, motor wires are both at + 12 VDC solder connection side. 2. Yellow/black wire will give Pin 5 negative voltage out when port + GPS Input (Positive) rudder movement is required. -
Page 11: Initial Operational Settings
• If process is successful display will show dOnE (Done) The initial set up of the SP120 is • Press either MODE or AUTO to done once the system installation cancel the installation process is complete and power has been •... -
Page 12: Sensitivity
“S” i.e. : understeer through too little rudder Compass Heading applied. • Switch on power to SP120 • Check display heading - example H • Check this heading against a known accurate bearing • If display reading differs from known heading*, the compass can be calibrated. -
Page 13: Compass Calibration
360º. Press MODE or AUTO to return • Switch on power to SP120 SP120 to MANUAL operation. • Press MODE button until display reads CCAL •... - Page 14 “Adjusting the PID control” The number of this parameter below for further information. represents the degrees per minute Range: 0 to 99 allowed. Recommended: 20 Range: 0 to 400 Recommended: 250 (260o/min) 12 of 22 SI-TEX Marine Electronics - SP120 Autopilot...
- Page 15 Range: 0 to 99 so it could be recommended to Recommended: 5 select the difernt routine. 0 is for PID. 1 is for a conventional Bang Bang Linear system. SI-TEX Marine Electronics - SP120 Autopilot 13 of 22...
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Page 16: Adjusting The Pid Control
(parameter 8) above. desired direction from the current direction of the vessel, the larger this value is. It provides a more responsive system when the boat is too far from its desired direction. 14 of 22 SI-TEX Marine Electronics - SP120 Autopilot... -
Page 17: Sp120 Default Settings
0 to 99 G. Control Calculation Period 0 to 99 H. Heading offset. -10.0 to +10.0 I. Baud Rate GPS 4800 4800 - 57600 J. Baud Rate Compass 4800 4800 - 57600 SI-TEX Marine Electronics - SP120 Autopilot 15 of 22... -
Page 18: Setting Up Your Gps Unit
• an “arrival zone” of more than 0. 05 NM (Nautical Miles) is set so that the GPS can detect when the vessel has reached a waypoint; then the SP120 will be able to steer from each waypoint to the next without intervention. 16 of 22... -
Page 19: Definition Of Terms
When receiving information from a Wind Direction System, the autopilot can steer a vessel based on the wind direction. This is especially useful for sailboats. *** Will be the displayed number for heading etc. SI-TEX Marine Electronics - SP120 Autopilot 17 of 22... -
Page 20: Testing Procedure
6. Check that rudder moves in correct direction 7. Check Rudder direction follows change request 8. Check Course change provides sufficient Rudder movement 9. Check magnetic heading display on SP120 10. Return steering to centre 18 of 22 SI-TEX Marine Electronics - SP120 Autopilot... -
Page 21: Trouble Shooting
• Check boat master switch for autopilot SP120 does not follow • Check circuit breaker (if applicable) waypoint route • Check in-line fuse of SP120 red • Check GPS plotter waypoint setting wire • Check GPS and AUTO selected on • Check all wiring connections SP120 •... -
Page 22: Warranty
Warranty SI-TEX products are thoroughly SI-TEX shall not be liable for damage inspected and tested before shipment or loss incurred resulting from the use from the factory and are warranted and operation of this product. to be free of defects in workmanship... - Page 23 (This page intentionally left blank) 21 of 22...
- Page 24 SI-TEX Main Office Address: 25 Enterprise Zone Drive, Ste 2 Riverhead, NY 11901 Tel: +1-631-996-2690 Email: service@si-tex.com Web: www.si-tex.com...
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