Precision Turbo and Engine NLR AMS-500 Boost Controller - Manual (Page 3)

3
Configure AMS-500 Operating Mode
Normal Mode—When the AMS-500 is configured for Normal Mode of operation it will
always attempt to reach the target pressure setting by operating the increase solenoid. If there
is not enough pressure in the system to achieve the target level the AMS-500 will keep trying
to apply pressure to the waste gate until its target is reached. When in Normal Mode the Red
LED will be on steady at power to indicate this mode is active.
Safe Mode—When the AMS-500 is configured for Safe Mode of operation it will at-
tempt to reach the target pressure level, if no increase in pressure is detected the system will
turn off the increase solenoid and open the decease solenoid. After one second another at-
tempt will be made to reach the desired target pressure. After three failed attempts the AMS-
500 will flash the Red and Green LED’s to indicate a pressure increase error and open the de-
crease solenoid. It will remain this way until power is turned off and back on to reset the sys-
tem. When in Safe Mode the Red LED will flash 4 times at power up to indicate this mode is
active.
Switching between modes of operation
1—Set all Stage1 and Stage2 switches to 0 including the Ramp Rate switch.
2—Turn AMS-500 on, the Red LED will blink once per second for 10 seconds. To
change operating mode you must wait 10 seconds with the Red LED blinking.
3—After 10 seconds the AMS-500 will automatically switch operating modes. The new
operating mode selected will be indicated by flashing the Red / Green LED’s in the patterns
listed below. Use the LED flash pattern to determine the current mode of operation.
Safe Mode—Red and Green LED’s will blink in a circular pattern.
Normal Mode—Red and Green LED’s will blink in an alternating pattern.
4—Turn power off, set switches for desired target psi and ramp rate for Stage2.
5—Turn power back on and AMS-500 is ready to operate in selected mode.
IMPORTANT—At least one Stage Programming switch must be non-zero for operation.
IMPORTANT—The AMS-500 controls the pressure on the Waste Gate so the actual
boost level obtained is a combination of the Waste Gate Spring pressure and pressure
applied by the controller
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