Mallory Ignition ACCEL 3 stage rev_limiter 49345 - Manual (Page 3)

T HE 3-S TAGE R EV - LIMITER - A N O VERVIEW
our new A CCEL 3-S TAGE R EV - LIMITER is a computer module. It is meant to be installed
etween the ignition trigger device (distributor pickup, crank trigger, etc.) and an A CCEL +
nition module. It controls the signals that tells your A CCEL + ignition when to fire.
n addition to the trigger input, your A CCEL
-Stage Rev-limiter uses two additional
puts to select rev-limit values. Both of
ese inputs may be connected to any type
f switch to activate selected rev-limits.
ou can then adjust their rev-limiting
nges with the key pad.
our A CCEL 3-Stage Rev-limiter can also
ctuate, through two 2-pin connectors, two
xternal devices (Typically a N
2 O solenoid and an A CCEL Shift Light). Both of these two
evices are actuated by setting their engine RPM values on the key pad.
P RECAUTIONS AND W ARNINGS
The A CCEL 3-Stage Rev-limiter can only be used with A CCEL ignition modules.
We strongly suggest that you deactivate any N 2 O system during installation and
initial programming, to prevent accidental activation.
The A CCEL 3-Stage Rev-limiter will cause a small, fixed timing retard in the trigger.
This is due to computational delay. Engine ignition timing must be checked and
re-adjusted, to account for this delay, after your 3-Stage Rev-limiter is installed.
Use caution when selecting and changing values.
This flexible product makes it easy to select values that could damage your engine.
Start with safe values and carefully evaluate their effect. Make small changes.
M ODES OF O PERATION
Your new A CCEL 3-Stage Rev-limiter has three different modes of operation.
1. Programming The Programming and Control modes overlap in the sense
2. Control
that the engine’s rev-limit control is still performed while in the
Programming Mode. In Programming Mode the LED’s display the
value you are programming and the ‘programming dot’ blinks in the upper left corner of
of the display. In Control mode the display shows current RPM.
3. Diagnostics – See Pg. 11.