Altronic VariSpark CPU-XL, Руководство по эксплуатации, Страница: 8 / 97

CPU-XL VariSpark IOM 07-21
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13.0 DC POWER HOOKUP: 293030-XX CABLE
13.1 The power connections to the CPU-XL must be in accordance with the National
Electrical Code or other applicable country code. The CPU-XL is suitable for
installation in Class I, Division 2, Group D locations.
13.2 It is necessary to split the control cable and power leads of the 293030 cable in an
engine-mounted Junction/Diagnostic Module or conduit tee. This box should be
separate from the main Junction/Diagnostic Module used to terminate the output
harness(es) to the ignition coils. Refer to Figure 12.
13.3 The CPU-XL system can be powered in one of the following ways:
A. 24 volt battery with charger.
B. DC power supply capable of furnishing 24-28Vdc at currents up to 30
amperes.
IMPORTANT: For proper operation of the CPU-XL system, voltage and current
supplied must be sufficient during all selected modes of operation. Figure 14
provides these details regarding the DC power hook-up:
1. CURRENT DRAW PER SYSTEM – formula varies depending on number of
outputs used, engine cycle and RPM, and spark number used.
2. MINIMUM WIRE GAUGE REQUIREMENTS – Chart 1 of Figure 16
gives the requirement vs. the length of run between the power source and
the CPU-XL Junction/Diagnostic Module.
3. MULTIPLE ENGINE INSTALLATIONS – It is recommended that each
engine be supplied by a dedicated power supply capable of up to 30
amperes of 24 volt DC power. If a large, uninterruptible, bussed supply is
available it can be used for multiple engines, but each igniton should be
wired back to the supply main independently of the other ignitions.
14.0 PRIMARY WIRING
14.1 There is no traditional primary wiring required for the use of the CPU-XL ignition
system. All of the necessary primary wiring is supplied pre-configured inside the
flexible conduit harnesses and the ignition rails.
15.0 SECONDARY WIRING
15.1 Mount the ignition rails as close as possible to the engine spark plugs consistent with
a secure mounting and avoidance of temperatures in excess of 185°F (85°C).
15.2 The spark plug leads should be fabricated from silicone insulated 7mm cable with
suitable terminals and silicone spark plug boots. The use of leads with resistor spark
plug boots (Altronic series 59320x-xx) is recommended to minimize interference from
emitted RFI on the operation of other nearby electronic equipment. Another option
is the use of suppression ignition cables. It is also essential to keep spark plug leads
as short as possible and in all cases not longer than 24 inches (600mm). Spark plug
leads should be kept at least 2 inches (50mm) away from any grounded engine part.
In deep spark plug wells, use rigid insulated extenders projecting out of the well.
15.3 The use of a clear, silicone grease (such as Dow Corning DC-4, G.E. G-623 or GC
Electronics ZS) is recommended for all high-tension connections and boots. This
material helps seal out moisture and prevent corrosion from atmospheric sources.
NOTE: The negative (-) of the 24Vdc
supply MUST BE COMMON WITH
ENGINE GROUND. Engines using
positive ground DC accessories
or starter motors will require a
separate dedicated power supply.
WARNING: Although the device has
internal protective fuses (3 AMP
in the Logic/Display Module, and
15 AMP in the Junction/Diagnostic
Module), two external 20 amp
fuses near the power source are
recommended for the protection
of engine and building wiring. This
will reduce the possibility of a fire
occurring in the event of a short
circuit in the wiring. See Figure 16.