Simrad NAC-2 User manual

204.0 mm (8.1”)
183.0 mm (7.2”)
57.0 mm (2.2”)
180.0 mm (7.1”)
190.0 mm (7.5”)
169.0 mm (6.63”)
91.0 mm (3.6”)
Dimensions Mounting
Parts included
1. 1 x NAC-2 Autopilot Computer - IPX5
2. 1 x NAC-2 Power cable - 2 m
3. 1 x NAC-2 Drive cable - 2 m
4. 1 x NAC-2 Feedback cable - 2 m
5. 1 x NMEA 2000 Network cable - 0.6 m
6. 1 x Micro-C T-Joiner
7. 4 x Fixing screws
8. Warranty card & literature pack
NAC-2
AUTOPILOT COMPUTER
INSTALLATION GUIDE
For setup instructions, commissioning guide,
product manuals, technical specifications,
certificates and declarations,
refer to the product website:
www.simrad-yachting.com
www.bandg.com
1
2
3
4
5
6
7
*988-11144-001*
System wiring example
AP44
AUTOPILOT
CONTROLLER
2
1
NMEA 2000 Backbone
Micro-C Drop cable
Micro-C Power cable
Micro-C T-Joiners
Micro-C Terminator, 120 Ohm
Drive cable
1
T T
MFD
12/24V DC
12/24V DC
12V DC
NAC-2
COMPASS
GPS
SENSOR
DRIVE UNIT
RUDDER
FEEDBACK
6
5
4
3
2
3
4
5
6
Power
NMEA 2000 Backbone
Micro-C Drop cable
Rudder Drive cable
IPX5

1 2 3 4
Connectors & Wiring
+
_
12 V DC
MAIN
POWER
SWITCH
0.9 m (3 ft)
FUSE,
20 AMP 2 m (6 ft)
1 m (3 ft)
T T
OPTIONAL
AUTO/STBY
BUTTON
RED
BLACK
YELLOW
BLUE
Key Function Color
1- 0V DC Black
2+ 12 / 24V DC Red
3Auto/ Standby button (Optional) Yellow
4Blue
14
23
32
41
Power
Socket Plug
1. Power (12 / 24 V DC)) - Max 8A/12A Continuous/Peak
2. Drive (Drive unit) - Max 8A/12A Continuous/Peak
3. Feedback (Rudder reference - Resistive feedback units only)
4. Network (NMEA 2000)
Resistive
Rudder feedback
unit
Key Function Color
1+ 5V DC Red
2Signal Yellow
3- 0V DC Black
Feedback
Socket Plug
3
1
1
3
22
Drive (Max 8A/12A Continuous/Peak)
Reversible pump Hydraulic linear drive Rotary drive Solenoid valve
Key Function Color
1Clutch GND/Solenoid Common Yellow
2Clutch Blue
3Motor_A Red
4Motor_B Black
Socket Plug
1
2
3
44
3
2
1
Auto/Stby button(optional)
Note: Navico NMEA 2000 Rudder feedback units should be connected directly to the NMEA 2000 backbone.
Helm-1 Combined
Drive &
Rudder feedback
unit
Example 1 Example 2