Simrad B&G NAC-2 - Page 8

In Out NMEA 2000 PGN
HDT x 10** 127250
HSC x 127237
RMA x
129025
129026
127258
RMB x
129283
129284
RMC x
127258
129025
129026
129033
ROT x 127251
RSA 5 127245
THS x 127250
VBW x 128259
VHW x
127250
128259
VLW x 129026
VTG x 129026
ZDA x 129033
* When magnetic heading source.
** When true heading source.
NMEA 2000 PGN description
59392 ISO Acknowledgement
59904 ISO Request
60160 ISO Transport protocol, Data transfer
60416 ISO Transport protocol, Connection management, RTS
group function
60928 ISO Address claim
65240 ISO Commanded address
42
Supported data | NAC-2/NAC-3 Commissioning Manual
Introduction
NAC-2 and NAC-3 autopilot computers
The NAC-2 and NAC-3 autopilot computers contain the electronics
needed to operate a hydraulic steering pump or mechanical drive
unit, while also interfacing with rudder feedback units and NMEA
2000 devices.
The NAC-2 is designed for boats up to 10 metres (33 feet) in length
and is suitable for low-current pumps, mechanical drive units, or
solenoid valves (8 amps continuous/16 amps peak).
The NAC-3 is designed for boats 10 metres (33 feet) or greater in
length and is rated to operate high-current pumps, mechanical
drive units, and solenoid valves (30 amps continuous/50 amps
peak).
Autopilot controllers
The NAC-2 and NAC-3 autopilot computers can be controlled by
various Simrad and B&G control units. This can be dedicated
autopilot controllers (e.g. AP44), Multifunction displays (MFDs) and
autopilot remote controllers (e.g. OP12) used in combination with
instrument systems, or any combination of the above.
Autopilot functions
NAC-2 and NAC-3 include a large range of functions, but not all
autopilot controllers have access to all options. E.g. autopilot
systems including only an autopilot remote controller (without
display unit) do not have access to turn patterns.
The user interface
The autopilot functions are presented slightly different on the
different displays.
This manual shows screen examples from both MFDs and AP44.
Autopilot computer setup
When the autopilot installation is completed, the setup of the
autopilot computer must be performed. Failure in setting up the
autopilot correctly may prohibit the autopilot from functioning
properly.
1
Introduction | NAC-2/NAC-3 Commissioning Manual
7
F-278 REV A
988-11233-001 Rev.1