Specification
13
3.8 INPUTS
3.8.1 DIGITAL INPUTS
Number
4 configurable digital inputs
(7 when Analogue Inputs are configured as digital inputs)
Arrangement Contact between terminal and ground
Low Level Threshold 3.2V minimum
High Level Threshold 8.1V maximum
Maximum Input Voltage +60V DC with respect to plant supply negative
Minimum Input Voltage -24V DC with respect to plant supply negative
Contact Wetting Current 6mA typical
Open Circuit Voltage 15V typical
3.8.2 ANALOGUE INPUTS
3.8.2.1 OIL PRESSURE
Measurement Type
Resistance measurement by measuring voltage across sensor with a
fixed current applied
Arrangement Differential resistance measurement input
Measurement Current 11mA ±10%
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 0 bar - 17.2 bar (0PSI - 250PSI) subject to limits of the sensor
3.8.2.2 COOLANT TEMPERATURE
Measurement Type
Resistance measurement by measuring voltage across sensor with a
fixed current applied
Arrangement Differential resistance measurement input
Measurement Current 11mA ±10%
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 - 250°C (32°F - 482°F) subject to limits of the sensor