Ap25 Control Unit; Autopilot Computer; Rf300 Rudder Feedback Unit - Simrad AP25 Manual

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:
Supply voltage
Motor current (continuous/peak)
Clutch/bypass current
Number of control units
NMEA 0183 ports (input/output)
Solenoid output
Input for NFU control
External alarm
Radar clock/data interface
Input for NMEA compass
* 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.
20221495F
System description
AC10 AC20 (AC40)
10-28 V 10-40 V
6/12 A 10/20A (20/40A)
1,5 A* 1,5 A*
2
1
x
x
7
2
x
x
x
x
x
11