2. B&G
  3. NAC-3
NAC-3

B&G NAC-3 Installation guide

  • Hello! I am an AI chatbot trained to assist you with the B&G NAC-3 Installation guide. I’ve already reviewed the document and can help you find the information you need or explain it in simple terms. Just ask your questions, and providing more details will help me assist you more effectively!
  • What is the maximum continuous and peak drive current for the Simrad NAC-3?
    What is the power input range for the Simrad NAC-3?
    What type of connectors does the Simrad NAC-3 use?
    How many fixing screws are included with the Simrad NAC-3?
    Does the Simrad NAC-3 come with a warranty?
211.0 mm (8.31”)
195.0 mm (7.68”)
65.5 mm (2.58”)
92.0 mm (3.62”)
196.0 mm (7.72”)
Dimensions Mounting
Parts included
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
6. 1 x 30 Amp fuse
7. Warranty card & literature pack
NAC
™
-3
INSTALLATION GUIDE
Trademark
®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
2
3
4
5
6
*988-11145-003*
For setup instructions, commissioning guide,
product manuals, technical specifications,
certificates and declarations,
refer to the product website:
www.simrad-yachting.com
www.bandg.com
System wiring example
AUTOPILOT
CONTROLLER
2
1
NMEA 2000® Backbone
Micro-C Drop cable
Micro-C Power cable
Micro-C T-Joiners
Micro-C Terminator, 120 Ohm
Rudder drive & Feedback cable
1
T T
MFD
12/24V DC
12/24V DC
12V DC
NAC™ -3
COMPASS
GPS
SENSOR
DRIVE UNIT
5
6
4
3
2
3
4
5
6
Power
NMEA 2000® Backbone
Micro-C Drop cable
Rudder Drive & Feedback cable
RUDDER
FEEDBACK
IPX5
-2
MOTOR
MOTOR
+
-
CLUTCH / BYPASS
DRIVE
30 A FUSE
POLARITY LEDS
DRIVE
ENGAGE
SUPPLY
NMEA0183
ALARM
MODE
SCREEN
TERMINATION
REMOTE
SIMNET
RUDDER
Terminal access Drive units (Max 8A/12A Continuous/Peak)
Rudder Feedback
External Alarm
Mode/Function Selector
External I/O
NMEA 0183
Terminal layout Grounding
Network Remotes
Power
1
2 3 3
+
_
CONNECT WIRES
CHECK POLARITY INSTALL FUSE POWER ON
POWER SWITCH
ON
POWER SWITCH
ON
TO VESSELS
MAIN
GROUND
Ground the NAC
™ -3 before
any other connectors
SCREEN
TERMINATION
POWER SWITCH
OFF
SIMNET / NMEA 2000®
REMOTE
RUDDER
DRIVE DRIVE
DRIVE
ENGAGE
DRIVE
ALARM
RUDDER
FEEDBACK
SENSOR
NMEA 2000®
BACKBONE
POWER SWITCH
OFF
12/24 V DC
DO NOT
INSTALL FUSE
FUSE NOT
INSTALLED
INSTALL
FUSE
FUSE
INSTALLED
+
_
+
_
RED
BLK
WHT
BLU
NET-S
NET-C
NET-H
NET-L
GND
PORT
STBD
LAMP
S9
SIMSIMRRADAD
S35S35
SIMRADSIMRAD R3000XR3000X
STBY AUTO
S9S9
S9S9
FRQ +
FRQ -
MOTOR
SOL-1
MOTOR
SOL-2
SOL GND
SOL
SOL-1
MOTOR
SOL-1
MOTOR
SOL-2
SOL
GND
CMD
RET
MOTOR
SOL-1
MOTOR
SOL-2
REVERSIBLE PUMP HYDRAULIC LINEAR
DRIVE
ROTARY DRIVE
SOLENOID VALVE*
* Solenoid valves, 12 or 24V DC,
powered from NAC-3 Autopilot
NOTE:
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.
NMEA0183
Rx_A
Rx_B
Tx _A
Tx_B
IEC61162-1/2
(NMEA0183)
DEVICES
+
RET
+-
(Frequency rudder feedback)
MODE
SYSSEL
MANUAL
AUTOPILOT
RET
SYSSEL
RET
STEADYSTEER™
DISENGAGE
SWITCH
OPTION 1
OPTION 2
SYSSEL
RET
DRIVE
ENGAGE
ENGAGE SIGNAL
D
G
S
CMD
RET
CMD
RET
Supply
RX1
Option 1 - Disengage switch
• 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.
Option 2 - SteadySteer™
• 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.
/