Haltech E8 - Manual (Page 56)

Haltech E11/E8 Instruction Manual
BAC Low - The BAC low output is used to control the BAC valve when the target opening is 0% to 50%
open. When the valve target position is 0%, the output duty is 100%. When the target is 50% open, the
output duty is zero to allow the spring to return the valve to its default position.
BAC Inverted - For 3-wire BAC valves that do not have a spring to return the valve to the centre position,
use BAC and BAC Inverted to control the valve. Connect the BAC output to the coil that pulls the BAC
valve open. Connect the BAC Inverted output to the coil that pulls the BAC valve closed. The BAC
Inverted signal is a complementary signal to the BAC signal. If the BAC output is set to 70% duty, then the
BAC Inverted signal is set to 30% duty. All idle control tuning and setup is done with the BAC output.
Refer to tuning section for details on how to tune your idle control.
Battery Light
This feature allows a warning light to be connected to alarm the vehicle operator that the vehicle battery
voltage is below a certain voltage. The prescribed warning voltage level can be set in the edit menu of the
battery light setup.
Boost Control Closed Loop
Closed loop boost control allows the user to set a predefined boost level in the “closed loop boost control”
map. The ECU will then adjust the control duty cycle of the boost control solenoid to adjust the actual
boost level until the actual boost level equals the desired boost level.
Figure 52
Refer to section tuning for details on how to setup and tune closed loop boost control.
Page: 56 Copyright © Haltech 2008