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Simrad NAC-3 High Current Autopilot Computer
Model: 000-13250-001The NAC-3 Autopilot Computer is the brains behind your autopilot system. NAC-3 contains the control algorithms developed to helm a yacht across a broad range of weather conditions and sea-states, alongside the electronics needed to operate a hydraulic or mechanical drive unit, while also interfacing with other components including heading sensors and rudder feedback units. The NAC-3 was designed for boats 10 metres (33 feet) or greater in length and is rated to operate high-current hydraulic drives, mechanical drive units, and solenoid valves with a current rating of 30 Amps continuous (50 Amps peak).
Specifications| Waterproof rating | IPx7 |
| Power | 12/24 V DC +10-30% |
| NMEA 2000 LEN | 1 |
| Interfaces | |
| Reversible motor control of rudder | Max continious load 30A, peak 50A for 1s |
| On/off solenoid control of rudder | 12/24V DC, common, load range 10mA to 10A, off current <1mA |
| Engage output for bypass/clutch | 12/24V DC, min 10mA, max 3A |
| Rudder angle, frequency input | 15V, 1.4 to 5kHz, resol. 20Hz/° OR NMEA2000 |
| NFU port/stbd input and mode indicator output | External open/close contact, common ret, contact current max 30mA |
| Mode input | External open/close or pulse contact for SYSTEM SELECT, common ret, close to activate, contact current max 30mA |
| External alarm output for buzzer/relay | Max 100mA, voltage level as local supply |
| Networking | |
| NMEA0183 | 1 in 1 Out |
| NMEA 2000 | 1 |
