Simrad AP25 Manuel d'instructions Page 13

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System description
20221495F 11
1.4 AP25 Control Unit
A compact autopilot control for panel, bulkhead or bracket
mounting. Large LCD 5” display for readout of autopilot data,
mode keys and a rotary course knob. It has two Robnet2
connectors for system interconnection and expansion and two
SimNet connectors for control and data sharing with other
Simrad products. A NMEA2000 Adaptor Cable is available for
interface through a SimNet port (page
146).
1.5 Autopilot Computer
The autopilot computer is the heart in the AP25 autopilot system.
It contains the steering computer, interface to other system
components, NMEA 0183 interface and drive electronics for the
drive unit motor and clutch. Three models, AC10, AC20 and
AC40 are available.
Autopilot computer comparison chart:
AC10 AC20 (AC40)
Supply voltage 10-28 V 10-40 V
Motor current (continuous/peak) 6/12 A 10/20A (20/40A)
Clutch/bypass current 1,5 A* 1,5 A*
Number of control units 2 7
NMEA 0183 ports (input/output) 1 2
Solenoid output x x
Input for NFU control x x
External alarm x
Radar clock/data interface x
Input for NMEA compass x
* 3A on later models
1.6 RF300 Rudder Feedback unit
Rudder feedback unit with transmission link and 10 m (30 feet)
of cable. Transforms the angular travel of the rudder to a digital
signal read by the autopilot steering computer.
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