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Installation
20221032B 91
PREVIOUS MODELS
Simrad
Drive Unit type
Drive
unit
voltage
Input
voltage
(Mains)
Drive output Interface to
steering gear
RPU100,
RPU150,
(Reversible
hydraulic pump)
12 12, 24,32 Proportional
rate
Hydraulic
plumbing
MRD100
(Reversible
mechanical drive)
12
24
12, 24, 32
24, 32
12V to clutch
24V to clutch
Proportional
rate to motor
Chain/
sprockets
MRD150 12
32
12, 24
32
12V to clutch
32V to clutch
Proportional
rate to motor
Chain/
sprocket
Table 4-4 Previous Models Drive Units
Note ! When selecting Drive Unit Voltage in the Installation Dockside
menu (see page 121), the clutch/bypass voltage must always be
set equal to the motor voltage. In a retrofit installation where,
for example a HLD2000 has a 12V motor and a 24V bypass
valve, the bypass valve solenoid has to be changed back to
standard 12V version since the drive engage output voltage
follows the motor voltage setting.
Connecting a Reversible Pump
Simrad
reversible
pump
JUNCTION UNIT
POWER PCB
TB1
TB2
TB3
Sol. -Motor
Sol. -Motor
Figure 4-15 Connecting a Reversible Pump