Electrical Load Switch

Electrical Load Switch

The Electrical Load Switch is used to determine when there is a significant electrical load on the charging system. This switch can be used as an idle up condition to help stabilise the idle rpm due to load on the alternator. This switch source is commonly found in older OEM alternators.

This node allows you to assign the input for the Electrical Load Switch. 

Generally, Electrical Load Switches use an Analog or SPI Input. Any available AVI or SPI can be used.

If using an Analog Input, ensure that the on and off voltages have been set appropriately so that the ECU detects the state of the switch correctly.

If using a SPI Input, set the sensor type to 'Hall Effect' (digital), and enable the pull-up. If the sensor pulls to ground when active, set the Edge Select to Falling. If the sensor goes open circuit when active, set it to Rising.

    • Related Articles

    • Electrical Load Switch

      The Electrical Load Switch is used to determine when there is significant electrical load. Wiring Tab Connections Electrical Load Switch Input Connection Type SPI Edge Select Sensor Type Pullup AVI Switch On Voltage Switch Off Voltage Example 1 ...
    • Alternator Control

      Alternator Control The Alternator Control function allows for the ECU to control the charging voltage of alternator that supports this function. This is done with a duty signal that is sent to the voltage regulator to alter the charging rate.  A ...
    • Alternator Control Wiring

      Edit - Click to assign / reassign an available output as Alternator Control Output. Clear - Click to reset Output assignment. Active State - The logic level of the output when the it is On. Low is driven to 0v; High is pulled to the pull up voltage ...
    • Alternator Control Base Output

      Base The amount of duty cycle required to have the Battery Voltage meet the Target Voltage. The alternator control operates in closed loop, so it is possible the actual duty being used by the Nexus R5 ECU may not match the Base Duty value. If not, ...
    • Alternator Control Target Voltage

      TargetThe Target Voltage that you wish to have the Alternator Control aim for. Typically this will be 13.8 to 14.4V. Too low will not charge the battery, and too high can cause battery damage.