autogaz AC STAG-50 Assembly instructions

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STAG-50, STAG-100, STAG-150
LAMBDA SENSOR CONTROLLER
INSTALLATION & PROGRAMMING MANUAL
version : V1.77 -V1.79
Manufacturer:
AC Spółka Akcyjna.
15-181 Białystok, ul. 42 Pułku Piechoty 50, Poland
tel. [phone], fax [phone]
www.ac.com.pl, e-mail: [email protected]

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SET COMPONENTS
1. STAG-50 or STAG-100 or STAG-150 - lambda sensor controller
2. Actuator (stepping motor) & base plate
3. A group of wires
4. Installation set:
- control panel
- fastening screws
- temperature sensor
- connectors, screws
5. Programming & operation manual
APPLICATION OF THE CONTROLLER
The STAG-50/100/150 lambda sensor controller has been designed for controlling of
operation of engines adapted for LPG and fitted with a lambda sensor. The control
panel enables manual, automated or emergency switching over working mode
(gasoline / LPG) as well as visual monitoring of LPG quantity.
INJECTOR EMULATOR LPG LEVEL INDICATION
STAG-50 - only LPG reserve indication (1 LED)
STAG-100 single-point emulator full indication (5 x LEDs)
STAG-150 four-point emulator LPG reserve or full indication
CONTROLLER OPERATION
After starting of the engine and reaching of required rpm (in the automatic mode green LED blinks) LPG
supply is switched on (green LED shines constantly). The LPG output is controlled with a actuator and
depends on lambda sensor indications. All STAG-50/100/150 parameters are set with an external tester
or a PC (AcLpgWin software).
CONTROL PANEL FUNCTIONS
The control panel contains:
 working mode switch (gasoline / LPG) - B/G key
 working mode indicator - green LED
 LPG quantity indicator: five LEDs
After switching on the ignition switch (without starting the engine) LPG supply may be switched on in
the normal (automatic) mode or emergency mode (starting up of the engine with LPG). Next functions
are switched on by pressing the working mode selector.
 green LED does not shine - running with gasoline
 green LED blinks - automatic mode (LPG supply begins after starting the engine, reaching
required rpm and, alternatively, reaching the temperature set at the pressure regulator).
 green LED shines constantly - emergency mode (starting up the engine with LPG). The function is
available only with switched ignition switch but without starting up the engine.
The last working mode is stored and recalled automatically during next engine start-up.

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WIRING DIAGRAM AND INSTALLATION MANUAL
The STAG-50/100/150 controller should be mounted within the engine room in the place, which is not
exposed to high temperature, water and fuel.
CAUTION!
It is recommended to install the controller vertically using its mounting eye and a screw, placing
sockets downward to avoid water penetration. Install bundle protecting rubbers carefully to seal the
entire housing.
Electrical connections should be soldered, carefully insulated and protected from humidity to avoid
shorting.
CONTROL PANEL FIXING & INSTALLATION
The control panel should be mounted within the driver's cab in the range of driver's sight.
First check fitting of the lower panel part, then drill two openings Ø 1,8 mm for fastening the panel and
one Ø 5 mm for the bundle. Fix the lower part of the panel (together with a plate) with screws
(installation set) in the chosen place and cover it with panel's upper part. Check the working mode
switch function.
50 100 150 CABLE COLOUR DESCRIPTION
11 15 11 BLACK GND
1 2 1 BLACK-RED +12 V BATTERY
15 13 15 RED +12 V IGNITION SWITCH
19 14 19 BROWN RPM - 5/12 V PULSES
14 1 14 BLUE LPG SWITCH ON
12 8 12 YELLOW-GREEN TPS
18 10 18 WHITE LPG LEVEL SEN SOR
20 9 20 ORANGE TEMPERATURE SENSOR
- 16 - YELLOW EMULATOR RELAY ( SWITCHING OVER )
- 17 - WHITE-GREEN EMULATOR RELAY ( CLOSED )
- 18 - GREEN EMULATOR RELAY ( OPEN )
10 15 10 BLACK SWITCHBOARD LED-100 or LED-50 ( new ) * (GND)
8 6 8 WHITE-RED SWITCHBOARD LED-100 or LED-50 ( new ) *
4 5 4 WHITE-GREEN SWITCHBOARD LED-100 or LED-50 ( new ) *
9 4 9 GREY-BLACK SWITCHBOARD LED-100 or LED-50 ( new ) *
- 3 14* GREEN-RED SWITCHBOARD LED-100 (+12V)
10 - - BLACK SWITCHBOARD LED-50 ( old ) (GND)
8 - - GREEN-RED SWITCHBOARD LED-50 ( old )
4 - - YELLOW SWITCHBOARD LED-50 ( old )
9 - - BROWN SWITCHBOARD LED-50 ( old )
5 12 5 PURPLE LAMBDA SENSOR
13 11 13 GREY CAR COMPUTER ( SIMULATION )
- 7 - option – WHITE-BLACK RESERVED CONNECTION
- 23 option – BLUE-BLACK RESERVED CONNECTION
-
6 19 6 BLUE-BLACK ACTUATOR
7 20 7 WHITE-BLACK ACTUATOR
17 21 17 ORANGE-BLACK ACTUATOR
16 22 16 VIOLET-BLACK ACTUATOR
* STAG-50 only LED-50 , STAG-100 only LED-100 , STAG-150 - LED-50 or LED-100

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STAG-50 installation diagram

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STAG-100 installation diagram
RELAY FUNCTIONS IN STAG-100
Connect wires Cut/Connect Connect
resistor ”Relay” parameter
Emulation of single-
point injector
yellow
white-green
Injector power supply
point ~20Ω Emulation of injections
Emulation of multi-
point injector
yellow
white-green
+12 power supply of
all injectors ~100Ω Emulation of injections
Fuel pump cutoff yellow
white-green
Pump power supply
circuit Emulation of injections
External emulator
controlling
yellow
green
+12V
Emulator
Emulation of injections
Error erasure yellow
green
+12V
Computer Memory erasure

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STAG-150 Installation diagram.
OUTLETS OF STAG 150 EMULATOR WIRE SET
No. WIRE COLOUR DESCRIPTION
1 (option) BLACK FRAME POWER SUPPLY OF EXTERNAL EMULATOR
8 (option) BLUE + 12V POWER SUPPLY OF EXTERNAL EMULATOR
2 YELLOW INJECTOR 1 - POWER SUPPLY
9 YELLOW-BLACK INJECTOR 1 - COMPUTER
3 GREEN INJECTOR 2 - POWER SUPPLY
10 GREEN-BLACK INJECTOR 2 - COMPUTER
4 RED INJECTOR 3 - POWER SUPPLY
11 RED-BLACK INJECTOR 3 - COMPUTER
5 BLUE INJECTOR 4 - POWER SUPPLY
12 BLUE-BLACK INJECTOR 4 - COMPUTER
14 (option) RESERVED CONNECTION
Near the STAG 150 emulator socket, there is an emulator resistance switch. When the switch is not
pressed, the resistance is 100Ω, and when it is pressed the resistance is 50Ω.

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STAG-50/100/150 - PROGRAMMING WITH A PC AND AcLpgWin SOFTWARE
To set STAG-50/100/150 parameters using a PC it is indispensable to connect the PC through a RS socket
and a RS-232 interface to the STAG-50/100/150 programming socket and start the AcLpgWin.exe
software.
During communication appears the screen PARAMETERS and transmission percentage indicator .
If after a few trials the software cannot establish communication with the controller then instead of the
transmission percentage indicator appears the window CONNECT, which should be activated to renew
communication. If there is no communication check RS-232 connection, change the serial port number
or activate auto-search (V1.76 only).
If the communication is established appears the window PARAMETERS, oscilloscope function is on.

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or -control panel - working mode change (mouse click )
- open help file
- window layout
- open gauges window
- controller parameters readout
- grid on
- start / stop oscilloscope
- oscilloscope time base change
- save visualisation file
- open visualisation file
- oscilloscope on / off; graph colour change
- save controller configuration file
- open controller configuration file
- restore manufacturer’s parameters

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On the oscilloscope you can see basic STAG controller signals:
lambda sensor, lambda simulation, TPS and actuator positions .
Below the graph, there is a signal table.
You can enable each graph and select its colour in the “Graph” column.
Apart from the oscilloscope, signal values are displayed in the “Values” column and visualised as line
graphs.
Gauge windows – display signals, it is possible to change
their position, size and shape ([-][+][O] buttons)
Additionally, in V1.77 version the windows of additional gauges are also accessible. They are displayed
by clicking a list below the “Gauges” button or by double-clicking relevant line in the signal table. It is
possible, separately for each such window, to change its position (using left mouse button), size ([-] [+]
buttons), shape ([O] button) and close ([X] button).
KEYBOARD SHORTCUTS
F1 - full function switch names / abbreviations
F2 - screen SETTINGS
F3 - screen PARAMETERS
F4 - screen CONFIGURATION
F6 - screen VERSION
F7 - parameter table activation for the screen PARAMETERS
F8 - working mode change GASOLINE / AUTO / LPG
NOTE: working mode change is possible also with mouse
F9 - font change
F10 - start of communication with the controller
QUICK CHANGE OF PARAMETERS
To change parameters and their values it is possible to use mouse buttons through
clicking on selected parameter as well as keyboard keys:
UP / DOWN - parameter change
RIGHT / LEFT - parameter value change

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STAG-50/100/150 ADJUSTMENT PARAMETERS
IGNITION COIL - according to the connection of rpm pulse and ignition type it is indispensable to
choose such type of coil to obtain the same rpm indication at the tachometer and
software window. In certain vehicles it is indispensable to use an ignition pulse adder.
COIL SIGNAL – change of the rpm detection voltage threshold. Set suitable detection level
depending on rpm pulses voltage value.
TPS - after connection of a throttle opening sensor choose its type and voltage range.
TPS THRESHOLD – voltage level, which causes switching over from idle operation to operation
with load
ADJUSTMENT FROM TPS - adjustment from TPS on / off
TPS HISTERESIS - removal of voltage noise from the TPS sensor
ENRICHMENT - number of actuator steps proportional to accelerator's pressing
WEAKENING - number of actuator steps proportional to accelerator's loosing
ACTUATOR SPEED - actuator speed during enrichment / weakening
OPEN - additional opening of actuator after reaching of TPS level
TPS LEVEL - TPS voltage level causing mixture enrichment – additional opening of the actuator
ACTUATOR AT THE POSITION - number of actuator steps during additional opening
ACTUATOR SPEED - actuator speed during opening
CUT OFF - additional closing of actuator during accelerator's loosing and reaching TPS level
downward. This function works if rpm falls to the set level.
RPM LEVEL - rpm level activating CUT OFF function
ACTUATOR AT THE POSITION - number of actuator's steps during CUT OFF execution
ACTUATOR SPEED - actuator speed during CUT OFF
LAMBDA SENSOR TYPE - lambda sensor operation range
LAMBDA SENSOR - lambda sensor type:
STANDARD – zirconium
RESISTIVE (-) – load from the frame
RESISTIVE (+) – load from the positive pole (+)