Specifications
13
3.5 INPUTS
3.5.1 DIGITAL INPUTS
Number 11 configurable inputs
Arrangement Contact between terminal and ground
Low level threshold 2.1V minimum
High level threshold 6.6V maximum
Maximum input voltage +50V DC with respect to plant supply negative
Minimum input voltage -24V DC with respect to plant supply negative
Contact wetting current 7mA typical
Open circuit voltage 12V typical
3.5.2 ANALOGUE RESISTIVE INPUTS
3.5.2.1 OIL PRESSURE
Configurable if engine ECU link provides oil pressure measurement
Measurement type Resistance measurement by measuring voltage across sensor with a fixed
current applied
Arrangement Differential resistance measurement input
Measurement current 15mA
Full scale
240Ω
Over range / fail
270Ω
Resolution 0.1 Bar (1-2 PSI)
Accuracy
±2% of full scale resistance (±4.8Ω) excluding transducer error
Max common mode
voltage
±2V
Display range 13.7 bar (0-200 PSI) subject to limits of the sensor
3.5.2.2 COOLANT TEMPERATURE
Configurable if engine ECU link provides coolant temp measurement
Measurement type Resistance measurement by measuring voltage across sensor with a fixed
current applied
Arrangement Differential resistance measurement input
Measurement current 10mA
Full scale
480Ω
Over range / fail
540Ω
Resolution
1°C (2°F)
Accuracy
+/-2% of full scale resistance (±9.6Ω) excluding transducer error
Max common mode
voltage
±2V
Display range
0°C -140°C (32°F - 284°F) subject to limits of the sensor