-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
WH
T
BL
U
NET-
S
NET-
C
NET-
H
NET-
L
GN
D
PORT
STBD
LAMP
S9
SIM
SIMRRAD
AD
S35
S35
SIMRAD
SIMRAD
R3000X
R3000X
STBY AUTO
S9 S9S9
S9
FRQ
+
FRQ
-
MO
TOR
SOL
-1
MO
TOR
SOL
-2
SOL GND
SOL
SOL
-1
MO
TOR
SOL
-1
MO
TOR
SOL
-2
SOL GND
CMD
RET
MO
TOR
SOL-
1
MO
TOR
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.
