500R DFCDI

FEATURES

Externally selectable high or low main (1st) spark energy gives this product extremely wide applicability.

The high energy setting is well suited to high boost forced induction and drag racing engine applications. The low energy setting is conducive to good ignition system reliability and longevity, making it ideal for road use and endurance racing.

Single or double spark selection (or spark train duration of multiple discharge versions**) is controlled by trigger pulse duration. Double spark operation at low engine revs (typ < 4000 RPM) promotes combustion stability for smoother part load engine operation. Since little or no improvement in engine performance results from double sparking at high RPM, it can be inhibited to reduce ignition coil heating, power consumption and also allow the 500R to deliver full spark energy to the main (1st) spark at higher RPMs. With the multiple discharge version**, pulse train length can be lengthened at lower RPMs to further improve light load combustion stability, especially when the engine is operating with lean mixtures or exhaust gas recirculation (EGR).

A positive going 12 volt square wave pulse output is provided for use as a Tachometer Gauge trigger.

This Ignition is capable of full ignition energy output up to a spark repetition rate of 800 Hz (Equivalent to 12,000 RPM on an 8 cylinder engine). Operation at reduced spark energy is possible up to 1.5 KHz (22,500 RPM with 8 cylinder engine). Rapid cold engine starting is aided by its ability to produce full spark energy at any battery voltage above the lower operating limit.

High efficiency circuitry ensures cool running and reliable operation in hot environments.

This product includes design measures that enhance electromagnetic compatibility (EMC), and lower conducted and radiated electromagnetic interference (EMI) emissions. Thus any nearby electronics are unlikely to be affected by, or effect this Ignition system. These measures include:

• Interference tolerant trigger input circuitry which minimizes the possibility of erroneous triggering and damaging cross triggering between ignition channels.
• Ignition outputs include suppression measures to reduce radiated electromagnetic interference and coupling of ignition primary pulses into adjacent wiring.
• Multi-stage power supply filtration protects the vehicle’s power supply from power converter switching noise.

** Multiple discharge version only available on special order.

BENEFITS

• High RPM operation – RPM range of the 500R CDI exceeds the mechanical limit of almost all production and race
  engine types.
• Smooth operation – Maximized individual spark pulse duration and the follow-up 2nd spark reduces the loss of
  combustion stability normally associated with CD ignition.
• Easy starting – Low start-up and operating voltage of the 500R ensures that the exceptional cold starting
  performance typical of a CD ignition is maintained under the most difficult conditions.
• Improved dynamics – CD ignition, unlike conventional inductive ignition, does not require the energy storage
  period to commence at a predetermine time (dwell time) prior to spark initiation. Its energy storage period
  occurs immediately after a spark completion, and once complete, it is ready for immediate firing at any time.
  Sudden engine RPM change and/or ignition timing change does not affect spark energy. Also sudden ignition timing
  adjustment need not be constrained. Lively low inertial engines receive most dynamic benefit from CD ignition.
• High power operation – When compared to conventional inductive ignition, the 500R CDI, operating in high power
  mode with CDI compatible coils, will give higher loaded peak voltage and a dramatic increase in spark discharge
  current. This allows operation at higher cylinder pressure with larger spark plug gaps. Maintenance of smooth
  low RPM part load operation is usually possible without heavy load misfire. Increased discharge current and
  faster rise-time allow reliable firing of shunted (fouled) spark plugs at larger gaps and enable the use of more
  heat tolerant Cool Heat Range Spark Plugs.
• Ignition coil friendly low power mode – The low power mode provides sufficient spark energy to support engine
  modifications that extend torque and RPM capabilities of many engines, without overstressing the factory fitted
  inductive ignition coil/s.
• Compatible with other onboard electronics – Reduced radiated and conducted electromagnetic interference (EMI)
  emission means less likelihood of disturbance to other Engine management system components, Dash/data loggers,
  Communication equipment and Infotainment systems.
• Simplified installation – No requirement for shielded or tightly twisted wiring. As the 500R has no requirement
  for a short direct battery connected power supply, its mounting location is not constrained by wiring length.

SPECIFICATIONS

Contact with the primary or secondary ignition circuits when high voltage is present, will result in SERIOUS PERSONAL INJURY OR DEATH.

During installation, all ignition system primary and secondary circuitry should be insulated to prevent possible human contact.

DISCONNECT THE VEHICLE BATTERY AND 500R CDI PRIOR TO COMMENCING WORK ON ANY IGNITION SYSTEM COMPONENTS.