AC STAG-4 QBOX BASIC User Manual page 31


Fuel level emulator (FLE)
FLE-FC – emulator type designed for vehicles (mainly French models), in which float
resistance is kept within 0 – 600Ω.
FLE-JC – emulator type designed for vehicles (mainly Japanese models), in which
float resistance is kept within 10Ω - 550Ω.
Prior to selection of the emulation type, connect the controller to the float circuit
(figures 7÷9) using a dedicated harness, type W-EPP-1 (STAG-300 QMAX PLUS) or
W-EPP-2 (STAG-4 QBOX/QNEXT PLUS).
In the case of FLE-FC emulation, connect only the yellow line, without cutting
the float circuit.

Fuel pressure emulator (FPE)
emulator, required for vehicles that generate fuel pressure errors when the engine is
fuelled by gas. In order to use the option, connect the controller to the petrol pressure
control circuits as shown on figure 8, according to recommendations presented in Table 1.
Next, perform emulator calibration (Figure 23). In order to initiate the procedure, press the
Start button and start the engine that has been warmed up earlier. The calibration is an
automatic process and takes about 3 minutes. Correct calibration will end with the
"Completed successfully" message.

AUX output configuration
output. This output can provide voltage close to that of the battery. Output current capacity
of 0.25A.
Possible configurations:
TAP
blue wire of the TAP harness should be connected to the AUX output.
F
UEL PUMP CONTROL
S
ECOND SOLENOID VALVE CONTROL
solenoid valve control.
A
CTIVE WHEN ENGINE IS RUNNING
signals are detected.
A
CTIVE WHEN PETROL IS USED
the PETROL mode.
A
CTIVE WHEN GAS IS USED
GAS mode.
In QBOX/QNEXT controller harnesses, the AUX output (pin 2L) is unassigned.
1
This applies to new hardware versions of the controllers (STAG-300 QMAX PLUS, STAG-4 QNEXT PLUS,
STAG-4 QBOX PLUS from version 3/B0)
2
The function is present only in STAG-300 QMAX PLUS controllers
3
This applies to new hardware versions of the controllers (STAG-300 QMAX PLUS, STAG-4 QNEXT PLUS,
STAG-4 QBOX PLUS from version 3/B0)
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1 – fuel level emulator installed in the petrol tank.
2
Fig. 23 Calibration of the fuel pressure emulator
3 – enables operating mode to be selected for universal control
– If a TAP (timing advance processor) is installed in the vehicle. The
CONTROL
– If the autogas system contains a fuel pump cut-off relay.
– the AUX output will be actuated if the controller is in the
within this document, in particular photographs, drawings, illustrations, trademarks, etc
– this option activates the integrated petrol pressure
– the AUX output performs a role of the second
– the AUX output will be actuated if engine rpm
– the AUX output will be actuated if the controller is in
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