Specifications 101SpecificationsST4000+ autopilot systemNominal supply voltage: 12 V DCOperating voltage range: 10 V to 15 V DCNote: reduced voltages will severely degrade drive performance.Autopilot power consumption Standby: 0.72 WAuto: 10 W at 25% duty cycle(depending on boat trim, helm load and sailing conditions)CE approvals: Autopilot system conforms to: 89/336/EC (EMC), EN60945:1997Compass and rudder position sensor: 94/25/EC, EN28846:1993Control unitOperating temperature: 0 °C to +70 °C (32 °F to 158 °F)Water protection: waterproof to CFR46Overall dimensions: width: 110 mm (4.33 in)height: 115 mm (4.53 in)depth: 41 mm (1.62 in)(see next page for other dimensions)Keypad: Eight button illuminated keypadLiquid Crystal Display (LCD): shows heading, locked course and navigational data, data pages(as selected - seepage 92); three brightness levels + offInput connections: SeaTalk, power, fluxgate compass, rudder position sensor andNMEA 0183Output connections: SeaTalk and motor driveDrive unitMaximum boat displacement:Wheel drive:Tiller drive:GP Tiller Drive8,500 kg (18,700 lb)6,000 kg (13,000 lb)7,500 kg (16,500 lb)Helm speed: Wheel drive:Tiller drive:9 rpm (designed for systems with 1–3.5 turns lock to lock)4.0 sec (lock to lock)Operating conditions:Wheel drive:Tiller drive:-10 °C to +55 °C (14 °F to 131 °F); waterproof to CFR460 °C to +60 °C (32 °F to 140 °F)Overall dimensions:Wheel drive:Tiller drive:outer diameter: 361 mm (14.2 in)depth: 171 mm (6.7 in) (without spoke clamps)midstroke length: 620 mm (24.5in); diameter: 44 mm (1.7in)(see next page for other dimensions)81131_7.book Page 101 Wednesday, March 17, 2004 3:59 PM