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SMT-FTX Technical Manual - Specifications

SMT-FTX TECHNICAL MANUAL

Perfect Power Online Manuals.

 

Support for your SMT-FTX Unit.

SPECIFICATIONS

Power consumption: ~ 100mA (0,1A)
Power supply voltage: 8-36V
Reverse Polarity Protection: Yes
Momentary power supply: up to 36V, 5 MS
Signal input impedance: > 10 K Ohm
Pull up: 2K2 Oh, switched
Ambient temperature: Up to 60 Degrees C (Passenger compartment)
Relay Drives (2) : 1A (SP1, SP2)
Ignition signal output: Bipolar, capacitor based
OEM Injector drive 6 x: 1 Amp, 13-Ohm injector
Analog output drive 2x: 0.005 Amp (5 mA), 0-5 volts
Analog input range: 0-5 Volts
Narrow band input range: 0-1 Volts
Wide band input range: 0-5 Volts

 

MAPPING

 

The process means changing the SMT-FTX input to output signal relationship at various operating points differently. A map has therefore many (more than one) entries, and one particular entry applies to one selected operating point. Maps come in two ‘shapes’:

 

MAIN MAPS: 16 deflection points x 24 RPM points = 384 points
SIDE MAPS: 24 points, Sometimes 16 points = 24 (16) points

 

The SMT-FTX has the following maps:

 

  • ANA1 (RPM, TPS), AMP, ENGT
  • ANA2 (RPM, TPS), AMP, ENGT
  • NAFR (RPM, TPS), AMP, ENGT
  • WAFR MOD (RPM, TPS), AMP, ENGT
  • IGNITION (RPM, TPS), AMP, ENGT
  • OEM INJECTION (RPM, TPS), AMP, ENGT
  • AUXILIARY INJECTION (RPM, TPS), AMP, ENGT
  • BOOST CONTROL LOW, BOOST CONTROL HIGH, BOOST TARGET
  • AFR LOOP (RPM, TPS), AFR LIMIT, AMP, ENGT

 

The total of all points is 3328!

 

Of course, not all are needed for ONE, but all are needed for many different applications.
All of the above maps rely on:

 

  • RPM
  • TPS (can be manifold pressure)
  • AMP (can be airflow)
  • ENGT (Engine temperature, can be Air temperature)

 

The following sections explain how to get them.