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Last update: 13.09.2007

Programmable ignition controller VCDI-21

Supported bikes:
Suzuki:
RGV250
Aprilia: RS250

VCDI-21 is upgraded VCDI-20 unit.

Technical data:

- minimum revs 200 RPM
- maximum revs 20000 RPM
- minimum supply voltage 8 Volts
- maximum supply voltage 20 Volts
- current draw 25mA
- max. supply voltage for 1 minute 40 Volts
- dimensions (LxWxH) 72x50x27mm

Circuit is protected against reverse supply voltage (wrong connection).

Features:
- two channel isolated input
- 2 custom programmable curves ( TPS33%,TPS66%,TPS100% )
- store and load function for 2 ignition curve sets
- TPS function ( 3D interpolation between programmed curves )
- programmable on/off output for solenoid (RPM and TPS dependent)
- programmable duty cycle (pulsed) output for solenoid (RPM and TPS dependent)
- shift light output
- shift kill
- map switch for changing ignition map while riding

- tachometer output
- easy and fast programming on the field, via handheld programmer
- programming while machine running - you can immediately see effects
- each curve can be set with 4 to 12 rev points
- each curve point can be programmed with 100rpm steps and 0,1deg steps
- three stage rev limit ( retard timing, reduced spark, spark off )
- signal delay compensation
- instant monitoring of rev and angle, via handheld programmer
- fast processing for high accuracy - delays from 1us
- theoretical maximum revs at 20000RPM (tested with pulse generator and oscilloscope)
- timing calculation for every 1RPM change (1000, 1001, 1002, .. .., 9805, 9806, ...)

Ignition curve example:


User Manual VCDI-21