VALVE GP-CONTROL 2019354 - Caterpillar

Illustration 65 g03857291
Without OCP
Illustration 66 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 the ECM are used, and the signal is wired as shown. The (+)4-20 mA signal is applied to OCP TB1-12 or EIC terminal 12, the (-)4-20 mA to TB1-13 or EIC terminal 13. If the OCP is not used, the connections are made to the EIC terminals 12 and 13 respectively.Ambient Based Rating Outputs
There are two 4-20 mA analog outputs to support the application of the ambient based rating feature of the G3600 A4 engine.Percent of Max Load (Actual Engine Percent Torque)
Illustration 67 g03850115
Illustration 68 g03850117This signal communicates the actual engine load, as a percentage of the full power rating of the engine. The full power rating will depend on which rating the engine is configured for and can be found in the engine ECM by viewing the "Rating Number" parameter as shown in Illustration 67.The output is scaled 0-110 percent of engine rating, for 4-20 mA and is torque-based. Engine speed can be used to derive the power being produced by the engine.
Illustration 69 g03857489
With OCP
Illustration 70 g03857491
Without OCP
The signal is available at the EIC and the OCP (if equipped). The connection for this signal is on OCP TB1-28 (+4-20 mA) and OCP TB1-29 (-4-20 mA), or EIC terminals 28 (+4-20 mA) and 29 (-4-20 mA).Percent of Available Load (Engine Load Factor)
Illustration 71 g03857496
With OCP
Illustration 72 g03857497
Without OCP
This signal communicates the actual engine load, as a percentage of the power capability of the engine under current operating conditions of temperature and cooler performance. The full range (denominator) of the signal varies depending on the inlet manifold air temperature (IMAT) being delivered to the engine. IMAT depends ambient temperature, cooler performance, and engine load.The output is scaled 0-110 percent for 4-20 mA and is torque-based. The customers control system and operating practices must be designed to keep the Percent of Available Load signal below 100 percent as ambient temperature increases.The signal is available at the EIC and the OCP (if equipped). The connection for this signal is on OCP TB1-30 (+4-20 mA) and OCP TB1-31 (-4-20 mA), or EIC terminals 30 (+4-20 mA) and 31 (-4-20 mA).Load Signal Monitoring
Illustration 73 g03850118The ambient based rating load signals can be viewed in Cat ET under Fuel Flow parameters.Percent of Max Load is represented by "Actual Engine - Percent Torque"Percent of Available Load is represented by "Engine Load Factor"
Table 1
Data Link Options - Ambient Based Rating Signals Data Link Modbus
Signal Name Electronic Technician J1939 OCP Network Manager (A5N2)
Percent of Max Load Actual Engine - Percent Torque SPN:513 40427 44658
Percent of Available Load Engine Load Factor SPN:92 40851 40138 Schematic of the Engine I/O
Illustration 74 g03850119