Summary of Contents for LECHO V-Max
- Page 1 15-124 Białystok ul. Gen. Andersa 5D/4 tel. (085) 675 45 03; fax. (085) 675 52 34 www.lecholpg.pl V-Max DESCRIPTION OF CONTROLLER TUNING WITH V-MAX COMPUTER PROGRAM...
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Page 2: Table Of Contents
Table of contents: 1.Introduction. 2.Technical data 3.Controller connection 4.Lead functions description 5.V-MAX program description 6.Controller programming 7.Advanced parameters 8.Clip connection 9.Set contents 10.Contact... -
Page 3: Introduction
2. Technical data: V-Max controller has inputs that are connected directly to the already existing car electric system as well as outputs that are connected to control elements enclosed in the set. Input and output parameters are presented in the table below: Tab. -
Page 4: Controller Connection
3. Controller connection The controller connection to a car system is presented as a diagram on Fig. 1. czerwono-szary All connections should be made reliably with soldered ends. It's forbidden to connect cables “as twisted pair” since it can lead to incorrect system operation. -
Page 5: Lead Functions Description
Blue wire: This is a 12V voltage output that is used for switching on gas solenoid valves. The wire is live after the V-Max controller is switched to gas drive mode. In no other case the should the wire be live. -
Page 6: V-Max Program Description
A free COM port (RS-232C) or a free USB port. In order to change the controller's parameters a PC computer and a V-MAX software (ver. 0.9 or higher) is required. AFTER connecting the controller click COM port settings and then AUTODETECT. -
Page 7: Controller Programming
Navigation: the program is based on a tab system. You can navigate between the tabs by clicking on them, or pressing a proper key (indicated at the tab's name). Changing a parameter in any of the editing windows is applied in the controller immediately. There's no need to save it. - Page 8 A new window opens: car parameters preview window. Observe and remember voltage on TPS sensor at low revolutions run in the visualization window. Notice the limits (a chart or a bar) within which the lambda probe voltage changes. TPS standard operating conditions are 0 – 5V, 5 – 0V, 0 – 12 V, 12 – 0 V SWITCH, 0-2,5V, 2,5V-0. Standard lambda probe types are 0 –...
- Page 9 when revolutions are increased, select ASCENDING and in a reverse situation, select DESCENDING. The parameter changes within the range: select from the list. 5.The next parameter is TPS THRESHOLD. In this parameter, set voltage threshold from TPS sensor at which the stepper motor is rapidly opened to the maximum value. This is operation during changing from low revolutions to operating revolutions.
- Page 10 8. STEPPER MOTOR RANGE BELOW TPS. This parameter defines the range within which the stepper motor's piston moves on idle gear. Set the initial values equal to 10 and 240, then exit the parameters' change window, enter the visualization window and observe within what range (on gas) the stepper motor moves with the accelerator released.
- Page 11 11. STEPPER MOTOR OPENING. This parameter defines the value of the stepper motor's additional opening during operation above TPS threshold. It gives a possibility of a slight gas dose increase during normal drive. This value should be from 2 to 10 steps – at a higher value a gas overflow may take place.
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Page 12: Advanced Parameters
7. Advanced parameters Advanced parameters window 1. TPS inertness is the tolerance for TPS value change. When this tolerance is exceeded, the stepper motor's position will change. 2. Lambda probe warm-up time (in seconds). Time, during which the controller ignores the signal coming from the lambda probe. - Page 13 8. Clip (switch) connection Operation mode indication: Petrol: diodes in the switch do not light Automatic operation: R or G to G diodes flash (depending on gas level in the tank). Gas: R or G to G diodes are on continuously (depending on gas level in the tank). Reserve indication: (operates during operation on gas) diode marked R, is on continuously.