Specifications 113
Specifications
ST4000+ autopilot system
Nominal supply voltage: 12 V DC
Operating voltage range: 10 V to 15 V DC
Note: reduced voltages will severely degrade drive performance.
Autopilot power consumption Standby: 0.72 W
Auto: 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), EN60945:1997
Compass and rudder position sensor: 94/25/EC, EN28846:1993
Control unit
Operating temperature: 0 °C to +70 °C (32 °F to 158 °F)
Water protection: waterproof to CFR46
Overall 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 keypad
Liquid Crystal Display (LCD): shows heading, locked course and navigational data, data pages
(as selected - see page 104); three brightness levels + off
Input connections: SeaTalk, power, fluxgate compass, rudder position sensor and
NMEA 0183
Output connections: SeaTalk and motor drive
Drive unit
Maximum boat displacement:
Wheel drive:
Tiller drive:
8,500 kg (18,700 lb)
6,500 kg (14,300 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 CFR46
0 °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)
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