Simrad Autopilot AP26 - Manual (Page 62)

Simrad AP26 and AP27 Autopilots
60
20221586B
PREVIOUS MODELS OF DRIVE UNITS
Model Autopilot
computer
Drive unit
voltage
Input
voltage
(Mains)
Drive output Interface to
steering
gear
RPU100 (1,0l)
RPU150 (1,5l)
RPU200 (2,0l)
(Reversible
hydraulic
pump) AC20
AC20
AC20 12V
12V
24V 12,24,32V Proportional
rate
Hydraulic
plumbing
RPU1 (1,4/2,0l)
RPU3 (3,8/5,0l) AC10
AC10 12V, 24V
24V, 24V Solenoid
valves, on/off
Hydraulic
plumbing
MRD100
(Reversible
mechanical
drive) AC40
AC20 12V
24V 12,24,32V
24,32V 12V to clutch
24V to clutch
Proportional
rate to motor Chain/
sprockets
MRD150
(USA only)
AC20 12V
32V
12, 24V
32V 12V to clutch
32V to clutch
Proportional
rate to motor Chain/
sprocket
Note ! When selecting DRIVE UNIT voltage in the Installation setup,
the clutch/bypass voltage is always set equal to the motor
voltage. If a retrofit installation where e.g. a HLD2000 has a
12V motor and a 24V bypass valve, the bypass valve solenoid
has to be changed back to standard 12V version.
Connecting a reversible pump
Simrad
reversible
pump
AUTOPILOT COMPUTER
POWER PCB
TB1 TB2 TB3 TB4 TB5
TB6
So
l. -M
ot
or
So
l. -M
ot
or
Figure 3-5 Connecting a reversible pump