HOUSING-FRONT 5169796 - Caterpillar

For EMCP 4.3 and EMCP 4.4, PMW, voltage senders can be configured within the ranges in Table 13.
Table 13
Analog Input Ranges
PWM Sender Ranges Current Sender Ranges Voltage Sender Ranges
0 to 100% 0mA to 20mA 0V to 5V
5 to 95% 4mA to 20mA 1V to 5V
0mA to 10mA 0V to 10V
-3V to +3V
-2.5 to +2.5V
-5V to +5V
-10V to +10V
0.5V to 4.5V
-1V to +1V Analog input data ranges can be defined with positive and negative values. Event thresholds are only programmable as positive values. To prevent nuisance alarms for low warnings with negative numbers for data ranges, the "Event Response Configuration" can be disabled, if the input data is acceptable to be negative.Warnings and Shutdowns
Each of these inputs can be configured to have "HIGH S", "LOW S", "HIGH SHUTDOWNS"and "LOW SHUTDOWNS" with configurable thresholds. Any value below the bottom point on the map or above the highest point on the map will raise a corresponding diagnostic event. Also, all of the events associated with the analog inputs have programmable time delays. "Low Idle Oil Pressure" setpoints are also available under the "Engine Oil Monitor" menu.Unsupported Analog Input Sensor Ranges
There may be voltage sensors available that use ranges not explicitly supported by the EMCP 4. Depending on the situation, there may be different ways to handle the situation. The following sections give options on how to handle these situations.Sensor Range is Smaller than Setpoint Options
If the desired sensor range is smaller than one of the available setpoint options, then extrapolation may be used to support the desired sensor. For example, for a 0 to 3 VDC temperature sensor reads −30° C (−22° F) to 120° C (248° F), the only range that includes all of 0 to 3VDC. The 0 to 5 VDC range should be used. The range between 3VDC and 5VDC will never be used. To make the data accurate, set the "Minimum Data Range" to −30° C (−22° F), and determine the "Maximum Data Range" mathematically. Refer to Illustration 101.
Illustration 101 g02274673
Mathematical Extrapolation of Maximum Data Range
The maximum data range can be found graphically or algebraically. In this example, the maximum data range would be defined by the equation of the line after the slope is determined. Since the data rises by 50 degrees for every volt, increasing 2 V above the 3 V limit requires the maximum range to be 100 degrees above the sensor limit of 120 degrees, or 220 degrees total. Refer to Illustration 102.
Illustration 102 g02274694
Example calculation for extrapolation of maximum data range
Sensor Range is Larger than Setpoint Options, but Usable Range is not
If the desired sensor range is larger than one of the available set point options, but the useful range for the sensor is within the supported ranges, then interpolation may be used to support the desired sensor. For example, for a 0 to 6 VDC temperature sensor that reads −40° C (−40° F) to 500° C (932° F), the EMCP 4 will not support the analog voltages higher than 5 VDC. However, as