Dimensions
Mounting
211.0 mm (8.31”)
65.5 mm (2.58”)
IPX5
195.0 mm (7.68”)
INSTALLATION GUIDE
196.0 mm (7.72”)
92.0 mm (3.62”)
NAC™ -3
Parts included
System wiring example
AUTOPILOT
CONTROLLER
Power
GPS
SENSOR
MFD
COMPASS
NMEA 2000® Backbone
Micro-C Drop cable
2
Rudder Drive & Feedback cable
NAC™ -3
T
www.simrad-yachting.com
1
T
12/24V DC
4
RUDDER
FEEDBACK
6
1
2
3
4
5
6
For setup instructions, commissioning guide,
product manuals, technical specifications,
certificates and declarations,
refer to the product website:
NMEA 2000® Backbone
Micro-C Drop cable
Micro-C Power cable
Micro-C T-Joiners
Micro-C Terminator, 120 Ohm
Rudder drive & Feedback cable
www.bandg.com
1
4
5
2
6
3
5
3
Trademark
12V DC
®Reg. U.S. Pat. & Tm. Off, and ™ common law marks.
Visit www.navico.com/intellectual-property to review
the global trademark rights for Navico Holding AS.”
1. 1 x NAC™ -3 Autopilot Computer - IPX5
2. 4 x Fixing screws
3. 1 x Micro-C Drop cable (male) - 0.6 m
4. 1 x Micro-C T-Joiner
5. 7 x Connectors
12/24V DC
6. 1 x 30 Amp fuse
DRIVE UNIT
*988-11145-003*
7. Warranty card & literature pack
Drive units (Max 8A/12A Continuous/Peak)
DRIVE
SIMNET
SCREEN
TERMINATION
REMOTE
SCREEN NMEA0183
TERMINATION
2
3
CHECK POLARITY
INSTALL FUSE
3
MODE
CONNECT WIRES
+
POWER SWITCH
OFF
FUSE NOT
INSTALLED
INSTALL
FUSE
FUSE
INSTALLED
OPTION 2
SOL
GND
MOTOR
SOL-1
MOTOR
SOL-1
MOTOR
SOL-2
RET
Remotes
+-
STEADYSTEER™
SYSSEL
• OPEN – Normal operation, can be controlled by controller.
• CLOSED to OPEN – Activates Auto mode, regardless of previous state.
• CLOSED - Disengaged. Cannot be controlled by controller.
NMEA 0183
RX1
NMEA0183
• Manual steering overrides the active mode.
• If Auto mode or NoDrift mode was active before going into manual
steering, they will automatically re-engage at the new course.
• For any other modes, the autopilot goes into Standby mode.
Rudder Feedback (Frequency rudder feedback)
External I/O
IEC61162-1/2
(NMEA0183)
DEVICES
PORT
RUDDER
GND
S9
STBY AUTO
SIMR
SIM
RAD
S9
S35
SIMRAD R3000X
RUDDER
FEEDBACK
SENSOR
G
S D
Supply
DRIVE
ENGAGE
FRQ -
STBD
NMEA 2000®
BACKBONE
LAMP
REMOTE
NET-L
BLU
DISENGAGE
SWITCH
Option 1 - Disengage switch
_
S9
NET-H WHT
MANUAL
ALARM
Rx_A
Rx_B
Tx _A
Tx_B
Network
BLK
AUTOPILOT
Option 2 - SteadySteer™
SIMNET / NMEA 2000®
RED
External Alarm
RET
12/24 V DC
NET-C
SYSSEL
RET
+
NET-S
RET
OPTION 1
SYSSEL
POWER SWITCH
ON
FRQ +
DO NOT
INSTALL FUSE
_
POWER SWITCH
ON
_
ROTARY DRIVE
NOTE:
* Solenoid valves, 12 or 24V DC,
powered from NAC-3 Autopilot
NAC™ -3 Autopilot cannot operate externally powered solenoids unless installing isolating relays.
NAC™ -3 Autopilot ne peut pas commander des électrovannes sans utiliser un relais isolé.
NAC™ -3 Autopilot kann keine extern gespeisten Magnetventile ansteuern sofern keine isolierten Relais installiert sind.
NAC™ -3 Autopilot kan ikke kobles mot magnetventiler med eksternt tilført spenning uten at man benytter eksterne releer.
Mode/Function Selector
POWER ON
SOLENOID VALVE*
+
POLARITY LEDS
Power
+
MOTOR
SOL-2
MOTOR
SOL-1
DRIVE
HYDRAULIC LINEAR
DRIVE
MODE
RUDDER
DRIVE
ENGAGE
POWER SWITCH
OFF
SOL-2
SOL GND
REVERSIBLE PUMP
ALARM
TO VESSELS
MAIN
GROUND
1
CLUTCH / BYPASS
Ground the NAC™ -3 before
any other connectors
30 A FUSE
SUPPLY
MOTOR
MOTOR
SOL-1
Grounding
MOTOR
SOL-2
-
+
Terminal layout
DRIVE
DRIVE
ENGAGE
CMD
DRIVE
RET
Terminal access
RET
CMD
CMD
RET
ENGAGE SIGNAL
">