ROLLER GP- 4304195 - Caterpillar

Engine Speed Control
When an external signal is used for speed control the ECM and wiring is as shown below.4-20 mA Speed Control Input
Illustration 63 g03857263
Illustration 64 g03849999
Minimum engine high full speed should match the desired engine operating speed when 4 mA is applied to the speed control input.
Maximum engine high full speed should match the rated or the maximum operating speed when 20 mA is applied to the speed control input.
For 4-20 mA control the (+)4-20 mA signal is connected to EIC pin 10, the (-)4-20 mA signal is connected to EIC pin 11.0-5 VDC Speed Control Input
Illustration 65 g03857272
Illustration 66 g03850000
Minimum engine high full speed should match the desired engine operating speed when 0 VDC is applied to the speed control input.
Maximum engine high full speed should match the rated or the maximum operating speed when 5 VDC is applied to the speed control input.
For 0-5 VDC speed control the (+) 5 VDC signal is connected to EIC pin 10, the (-) 5 VDC signal is connected to EIC pin 11.Global CAN Data Link
Illustration 67 g03857275The Global CAN Data Link is accessed on EIC pin 34 (Global Data Link -), EIC pin 42 (Global Data Link Shield), and EIC pin 50 (Global Data Link +).If the wire length to the connected system exceeds 1 meter, the CAN terminating resistor (120 ohm) should be moved to the end of the new trunk line.Other Engine Interfaces
Fuel Quality (LHV) Input
Fuel quality is an important user set configuration value. The fuel quality is normally a fixed constant indicating the energy content of the fuel, however the engine has the capability to use an analog input for fuel quality when needed.The parameter defaults to a configured value set in Cat ET. Alternatively, when fuel quality is known to vary significantly a 4-20 mA input to the ECM can be configured to receive the fuel quality value from instrumentation on site. The site will require a means of measuring the actual fuel lower heating value (LHV) and provide a corresponding signal to the ECM.Fuel Quality – Fixed Value
Illustration 68 g03850113When using a fixed, configured value the ECM is set up as shown in Illustration 68. Most installations will use this configuration. The fuel quality is set as a constant in the ECM. The "Fuel Quality" field is set to the lower heating value of the actual engine fuel, based on a recent gas analysis.Variable Fuel Quality
When engine fuel lower heating value changes over a wide range the LHV setting in the engine can be updated by a 4-20 mA input.Fuel Quality – 4-20 mA Input
Illustration 69 g03857289
With OCP
Illustration 70 g03857291
Without OCP
Illustration 71 g03850114
The Fuel Quality Sensor LHV Lower Setpoint is the value of the Fuel LHV when 4 mA is applied to the input.
The Fuel Quality Sensor LHV Upper Setpoint is the value of the Fuel LHV when 20 mA is applied to the input.
When using a local instrument to provide the Fuel Quality setting, a 4-20 mA signal from a customer instrument measuring fuel LHV is required. The following settings in