3.2.3 Required Parts
3.2.3.1 Processor’s Utilizing a Servo
• 33C type push-pull cables. The cables are measured from the end of the threads to the end
of the threads. Available in 1 foot (0,3m) increments. (If 43C type push-pull cables are
required, a 43C Conversion Kit is available from ZF Marine Propulsion Systems Miramar,
LLC. Refer to MMC-345 43C Cable Conversion Kit)
• Many engines, transmissions and inboard/outboard (I/O) drives are delivered with mounting
kits. If not, contact the engine of gear dealer or manufacture for a factory Cable Connection
Kit. Refer to MMC-280 400 Series Control Head Variations to show other connection
options.
3.2.3.2 All Remote Stations
• An engine STOP switch must
be located at each Remote Station.
3.3 DC Power Source
One of the most important (and often overlooked) items for proper operation of your control system is a
clean, dedicated, and reliable source of DC Power.
The wiring used to supply power from the power source (battery) through the various components (fuses,
distribution panel, relays, etc.) to the Processors must be sized for a voltage drop of 10% or less using 10
amps as the maximum current draw. Refer to ABYC Standard E-11, Table X to determine the appropriate wire
gauge for the necessary conductor length.
When using ZF Marine Propulsion Systems Miramar, LLC supplied 14 gauge power cable, and in accordance
with ABYC Standard E-11, the distance from a 12 volt power source (battery or DC Distribution Panel) shall
not exceed 15 feet (4,6m). In 24 volt systems, the maximum cable length is 20 feet (6,1m).
It is recommended by ZF Marine Propulsion Systems Miramar, LLC that an Automatic Power Selector (APS)
and a second power source (battery) be used. Refer to S-214 Automatic Power Selector Model: 13505 for
examples of power supplies.
3.3.1 Processor Power
The items listed below will help ensure optimum performance from your control system.
• The Processor requires a battery source of 12 or 24 VDC.
• Two 5 ampere (when isolated power supplies are required) or one 10 ampere trip-free thermal
circuit breaker(s) with manual On/ Off actuation
• The use of an APS (Automatic Power Selector) is strongly recommended.
• Power should come from the vessel’s DC Distribution Panel.
• Do not
use engine starting batteries on a 12 VDC system, unless an APS is installed.
• The cables feeding power from the battery to the Processor must be sized large enough to
keep voltage drop, due to current flow, below 10%. Refer to S-214 Automatic Power Selector
Model: 13505.
The Processor’s power cable(s) maximum lengths are listed in
MMC-288 References and Parts Source
and examples of the various wiring options are shown in S-214 Automatic Power Selector Model:
13505. Ultimately, it is the boat builder or installer’s responsibility to ensure that the vessel’s wiring
meets the requirements of American Boating & Yachting Council standard E-11, for AC and DC
Electrical Systems on Boats.
WARNING: An Engine STOP Switch MUST be installed at every remote operating station. Refer to CFR 46,
Section 62.35-5 (US Coast Guard) and ABYC P-24.5.8.
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