Nitrous Express 2 Dial Progressive Controller (15835) - Manual (Page 3)

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2.0—Controller Description and Basics of Operation
The NX #15385, Nitrous Controller was designed to be a cost effective and accurate
controller for the Application of Nitrous Power. By using the latest technology a .0000025
second resolution timer system is available for precise control of the solenoids. The pro-
gramming switches are simple to use and provide binary coded information to the 32Mhz
Microcontroller. By using binary coded switches with positive detent positioning the user
selected values will not change with system voltage and/or temperature changes. The
switches are only read during a power on condition and any accidental changes will not be
recognized during operation.
The activation input has been designed to provide a ground while the activation sig-
nal is OFF to provide compatibility with Timing Retard Activation Inputs of popular Igni-
tion Systems.
The Starting Percent (initial power) is adjustable from 20% to 50% in 2% incre-
ments. When the activation signal is applied, the controller will activate the solenoids using
the selecting starting percent of power. Note, if the build time switch is set to 0.0 the Nitrous
will immediately go to full power regardless of the start percent setting.
The Build Time (Time in seconds to Full Power) is adjustable from 0.0 (Instant Full
Power) to 8.0 seconds in 0.5 second increments. A short build time will apply the nitrous
power much more aggressively than a long build time.
An internal 20 second Timer will begin when the activation signal is applied. After
the 20 second timeout period the controller will wait 2 seconds before resetting the Progres-
sive Timer. The activation signal Must be Removed to complete the Progressive Timer Re-
set.
The controller can be installed to provide Hold and Wait Timer Function or Reset
Timer with Activation Signal.
The Hold and Wait method will remember where the Nitrous Power was at if the
user lifts the throttle (removes the activation signal) and then Re-Applies it.
The Reset Timer method will Reset the controller every time the activation signal is
removed and re-applied. This method allows the Nitrous Power ramp to be used with each
gear change.
Note - that after the 20 second internal timer has elapsed the Nitrous Solenoids will
be turned OFF. The activation signal must be removed after the 20 second timer has
elapsed or the controller will continue to wait in an OFF condition. When the activation sig-
nal is removed all Timers are Reset and the controller is ready for operation again.
Instructions are provided for each method of installation as well as for Single and
Multiple Solenoid installations.
Test Procedures and Trouble Shooting guides have been included. Please see the Ta-
ble of Contents on Page 2 for further information.