Compatible Drive Units - Raymarine EVOLUTION EV-1 Installation Instructions Manual

Compatible drive units

The drive unit interfaces with the vessel's steering system. The type of drive required depends on
the type of vessel, the capacity of the associated steering system, and the intended use of the
system (e.g. coastal waters or offshore).
Important:
• Always choose your drive unit with safety in mind. Don't be tempted to choose a drive which
will always be working at the limits of its design capabilities.
• When determining your vessel displacement, always add 20% to the displacement of your vessel
to account for the added weight of fuel, gear, provisions and people.
• Please note that the displacement figures provided are for guidance only, and your choice of
drive unit should not be based on these figures alone. Consider also the intended duty cycle
(hours of operation) of the autopilot system, as well as the likely water conditions.
• If you are intending to use the drive unit offshore, it is especially important to consider a larger
system with spare capability, and also to ensure a backup system is in place.
• If you are in any doubt as to the correct drive unit for your vessel, contact Raymarine Technical
Support or an authorized Raymarine dealer.
Raymarine autopilot systems accommodate hydraulic, mechanical and power assisted stern drive
systems.
Drive category
Hydraulic pumps
Raymarine autopilots connect to hydraulic
steering systems using a rugged hydraulic pump
matched to the capacity of the hydraulic steering
system.
To find a suitable pump, you'll need to know
the size (in cc) of the hydraulic cylinder ram(s)
mounted to the rudder on vessels featuring
an inboard engine, or to the drive unit on
vessels featuring outboard engines. Refer to
your steering system documentation for this
information. Alternatively, you can look on the
cylinder ram itself for the brand and model
number.
Once you have this figure, refer to the
Cylinder Ram Size Chart on the Raymarine
website to determine which hydraulic
autopilot pump is compatible with
your vessel's hydraulic steering system:
http://www.raymarine.co.uk/view/?id=209.
28
Suitable
Available types ACU
Type 0.5 ACU-100
Type 1 12 V dc only ACU-150
Type 1 12 V / 24 V ACU-200
dc
Type 2 ACU-400
Type 3 ACU-400
Constant Running ACU-300
pump (solenoid)
* Max
output
7 A
12 A
15 A
30 A
30 A
5 A