User manual MULTIVOX SQ-01

[. . . ] When a new version of the software is installed, it is recommended that the old versions are uninstalled completely and the new cd-roms used. The new cds contain a package "EncPak IE" with a file "Install. htm". This file contains the correct links to further files on the cd-rom which allow updating of computers with the Internet Explorer files needed to proceed with the programming of the control boxes. The minimum requirements for the Personal Computer are: 486 processor, 8Mb RAM, SVGA 640X480 graphics card with 256 colours, CD ROM reader (or Internet connection), at least 10Mb available on the hard disc (this figure depends on the number of auto cards in the file, since each auto card requires about 600Kb). [. . . ] 5 1 - TYPE OF LAMBDA SENSOR Allows setting of type of lambda sensor fitted to the vehicle, to obtain a correct interpretation of the signal. The following values can be set: A - 0 - 1 Volt; B - 0 - 5 Volt; C - 5 - 0 Volt; D - 0. 8 - 1. 6 Volt. 2 ­ NUMBER OF LAMBDA SENSORS If two Lambda sensors are fitted, allows setting and visualisation of both signals. Software handbook LANDI RENZO S. p. A. 11 3. 1. 3 Gas level 1 2 3 Fig. 6 1 ­ TYPE OF GAS LEVEL SENSOR Allows setting of the type of gas level sensor installed. The following gas level indicators can be set: A - A. E. B. ; B - 0 - 90 ohm; C - Landi Renzo; D - Non standard; E - Non standard inverted. By selecting the option "NON STANDARD" or "NON STANDARD INVERTED" it is possible to customise the settings for the type of gas level sensor used by setting the relevant thresholds. 12 LANDI RENZO S. p. A. Software handbook 2 ­ AUTOMATIC RETURN TO PETROL If this control is activated, two conditions are possible governing the return to petrol: - the lower pressure read for a certain period (point 3 fig. In this case an automatic return to petrol takes place accompanied by an audible (fast intermittent buzzer) and visual signal (petrol and gas led lit up). - from the series of calculations, the time on gas is greater than the maximum admissable (Tmax_inj_gas = (120000/rpm) -Time_closure_inj_gas [ms]), once this time related to this action has passed, there is a momentary changeover to petrol. This is a temporary situation, and as such there is a visual signal of functioning on petrol on the commutator, but no audible signal. 10 The line K open loop can be used to manage the open loop when functioning with gas. When Tinj benz assumes a value higher than that shown in fig. 10 point 1, the coefficient of K used to calculate the related Tinj gas is no longer that of the main map but as in point 2. 5 ­ LAMBDA SENSOR This is the value in Volts supplied by the Lambda sensor (if connected). 6 - EXIT 24 LANDI RENZO S. p. A. Software handbook 3. 3 DIAGNOSIS 1 2 Fig. 17 The functioning diagnosis page allows the viewing of any possible malfunctions of components and system which may occur while functioning with gas. If an error is seen, after resolving the problem which caused the error, zero the system by pressing key 1. The malfunctions which may be indicated are: GAS INJECTOR DIAGNOSIS While functioning with gas an error is signalled on the corresponding injector if for a certain consecutive number of injections (10) situations of open-load or short circuit occur in the coil of that injector. LOW PRESSURE DIAGNOSIS While functioning with gas an error is signalled if the pressure read stays for a certain time (low pressure time for return, which can be set from Tools in the Gas Level page) at a level: - less than 0. 4 bar for normally-aspirated engines and 1 bar for turbo engines running on LPG - less than 1. 54 bar for normally-aspirated engines and 2. 6 bar for turbo engines running on Methane when at the same time the gas level is not on reserve. HIGH PRESSURE DIAGNOSIS While functioning with gas an error is signalled if the pressure read stays for a certain time (5 seconds) at a level: - higher than 1. 4 bar for normally-aspirated engines and 2. 85 bar for turbo engines running on LPG - higher than 2. 5 bar for normally-aspirated engines and 4. 1 bar for turbo engines running on Methane . Software handbook LANDI RENZO S. p. A. 25 SAFETY RELAY DIAGNOSIS An error is signalled if in the absence of lock (and thus with the relay disabled) there is downstream from the relay a voltage greater than 6V for more than 150 seconds. A diagnostic error is also signalled if while running, downstream from the relay a voltage of less than 6V for 5 seconds is read. ELECTROVALVE DIAGNOSIS It is possible that short or open circuits in the gas electrovalve coils are diagnosed when functioning with gas. Bearing in mind that the wiring of the two electrovalves is connected in parallel to the same contact, it is possible to enable the check only at the drive outlet (reduction unit electrovalve check). The error is signalled when for 5 seconds the absorption of current measured does not fall within the working range. [. . . ] Exit the screen with the guide keys and NEVER with key 7, except in extreme circumstances such as the program freezing. 32 LANDI RENZO S. p. A. Software handbook 3. 6 SAVE PRESENT CONFIGURATION Fig. 24 By accessing SAVE PRESENT CONFIGURATION it is possible to save the 3, 4 cylinder or 5, 6 or 8 cylinder file in the relevant archive, depending on the type of fuel used. Recognising the type of control box connected, the program automatically saves the file relating to 3, 4 cylinders or 5, 6 or 8 cylinders. Selecting the type of fuel in the "CHANGE TO GAS" page (paragraph 3. 1. 1) will determine whether the METHANE file is saved in the METHANE archive or the LPG file is saved in the LPG archive. [. . . ]