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Navigation: Advanced

Custom sensor deviation tracking

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In combination with the custom user tables and the advanced warning system, you can compare almost any value with any other value, and do almost anything with it from lighting a warning light, put a warning on MDash, complete shutdown the engine or even set another rev-limiter, your fantasy is the limitation in MaxxECU.

Since there is to many combination what can be done, we make a simple example by using an Oil pressure sensor to be compared with an Oil pressure target table, if the difference is to much, do something to warn the driver about the problem.

 

Another function you might look for: fuel pressure deviation tracking.

 

 

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1. Activate an input as an pressure sensor. Found in Inputs --> AIN (0-5V).

 

 

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2. Create a custom User table and fill with your desired oil pressure target. Preferable, do a run and check your current target. Advanced --> User tables --> User table.

 

 

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Optionally, you can add an oil temperature sensor, wired to an available AIN (temperature) and add a 4D axis to your usertable, to have a correct oil pressure table with compensation for a lower pressure with a hotter oil. But in this example, for less complicity, we skip the 4D part and the oil temperature compensation.

 

 

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Now, these RealTime Data values is available in the system to be used as conditions t o do whatever you can imagine.

 

 

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3. Now, we add a second User table in Advanced --> User tables --> User table. And in the above example, the load axis is the actual Oil Pressure from the sensor and the Speed axis is your oil pressure target.

 

 

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4. We now have a RealTime Data value that contains the difference between our actual oil pressure, and our oil pressure target, this value can be used in the whole system to activate an output or input, or even as a condition value in the advanced warning system.

 

 

Use the deviation value to light up a bulb/led wired to a GPO

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1. Assign the User output 1 to the GPO 1 output, where you have wired a red big warning light in your dash.

 

 

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2. In the above example we just pay attention to oil pressure deviations over 2500RPM, as the second condition, we use the user table containing the oil pressure deviation, if it differs more than 1bar, the output with the wired warning light will light up and warn the driver for an oil pressure issue.

 

 

Use the deviation value in the warning system to warn and cut the engine

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1. In the above example, if the oil pressure deviation values is to high, at level 1 (1bar away from target) you get a warning on MDash (and also on the warning system light level 1 output), if the oil pressure reaches level 2 (2bar away from target) the engine will shutdown (if engine power cut conditions are met of course) and also activate the warning system light level 2 output..