__        __
 \ \      / /
  \ \ /\ / / 
   \ V  V /  
    \_/\_/   
             

         
         
 ##  ##  
  ####   
   ##    
  ####   
 ##  ##  
         

         
         
 ##  ##  
 ##  ##  
 ##  ##  
  #####  
    ##   
 ####    

         
 ####### 
 ##  ##  
    ##   
   ##    
  ##  ## 
 ####### 
         

         
         
 ##   ## 
 ## # ## 
 ####### 
  #####  
  ## ##  
         

IMPORTANT: enter the case-INsensitive alphabetic (no numbers) code AND WRITE SOME SHORT summary of changes (below) if you are saving changes. (not required for previewing changes). Wiki-spamming is not tolerated, will be removed, so it does NOT even show up in history. Spammers go away now.


Visit Preferences to set your user name
Summary of change:
= VEMS v3.3 installation instructions = These instructions are written for a typical Windows Installation. The EC36 is the larger Econoseal 36pin plug, and EC18 is the smaller Econoseal plug. == Step One - Connecting Power == The first thing to do is to get a power supply upto the *EC36-pin25 3A Fused +12v supply *EC36-pin26 Signal Ground ''NOTE: Signal Ground pin has many connections (CAS, TPS, IAT, CLT ...) make provision for this in your wiring loom.'' The 3 Power Grounds * EC36-pin5 * EC36-pin21 * EC36-pin32 * EC36-pin22 ''this pin is optional, but usually used as an extra GND signal.'' These (at least the first 3) must be connected to BATTERY- (preferrably with 3..4 separate wires that meet as close to the BATTERY- as possible). Failure to do this may result in damage to the VEMS module. http://vems.hu/www.vems.co.uk/VEMSUserManual/ConnectingPower.png Make sure the EC36-pin5 connection does not break during operation. This is the reason for using separate wires: even if 1..2 breaks for some reason (eg. a screw comes loose), at least 2 remains connected. Before you put any power through the unit use a multimeter to ensure that pins are wired correctly. There is little point in connecting power until the serial connector or LCD screen has been connected. == Step Two - Connecting Serial Port == To allow the connection of the VEMS unit to your PC a serial port plug must be connected as follows. * EC18-pin14 to DSUB9-pin3 * EC18-pin15 to DSUB9-pin2 * EC36-pin26 to DSUB9-pin5 (GND). http://vems.hu/www.vems.co.uk/VEMSUserManual/ConnectingSerialPort.png == Step ??? - Connecting the LCD == GenBoard/BuildProcedures/LCDconnect == Step Three - Testing the unit == There are a number of programs that can be used to configure your VEMS system, the easiest to use and install is the MegaTune package, the latest version of which can be obtained from: http://www.vems.hu/wiki/index.php?page=MegaTune <<INSERT INSTALLATION INSTRUCTIONS>> First connect your VEMS serial cable (see Step Two), and make sure that there are no applications that use the serial port running on your PC, applications such as Palm Pilot HotSync. Connect the EC-18 connector with the serial port to VEMS. And then connect the EC-36 connector with the power supply. Navigate to the directory that you installed MegaTune into and double click on the megatune.exe application, and you will be presented with a window: http://vems.hu/www.vems.co.uk/VEMSUserManual/SelectProject.png Select the VEMS Standard 12x12 (Default) option and click OK. http://vems.hu/www.vems.co.uk/VEMSUserManual/MTMainScreenWrong.png On the Menu bar select Communications->Settings... http://vems.hu/www.vems.co.uk/VEMSUserManual/CommunicationSettings.png Select the com port that VEMS is connected to, and click the 'Click to test' button, if all is well you will see the success message http://vems.hu/www.vems.co.uk/VEMSUserManual/CommunicationSettingsTested.png This shows that your VEMS module is alive and communicating with the PC, close the Settings window and you should see something similar to this: http://vems.hu/www.vems.co.uk/VEMSUserManual/MTMainScreen.png Close MegaTune and disconnect VEMS from its power supply. == Step Four - Connecting the primary trigger (CAS) == Mechanical considerations (need to be written somewhere and referenced from here) The VR sensing circuitry is very sensative to electrical noise, sheilded cable (coax) must be used and good grounding is vital. * EC36-pin27 VR+ (central wire in coax) * EC36-pin26 VR- (sheild and ground) http://vems.hu/www.vems.co.uk/VEMSUserManual/ConnectingPrimaryTrigger.png Sheilding should be grounded to engine block close to the VR Sensor === Step Five 'A' - Connecting the secondary sensor === With the same considerations with the primary trigger regarding electrical noise. * EC36-pin13 VR+ (central wire in coax) * EC36-pin26 VR- (sheild and ground) http://vems.hu/www.vems.co.uk/VEMSUserManual/ConnectingSecondaryTrigger.png == Step Five - Configuring the system to suit the sensor == [insert config file fragment] == Step Six - Testing the crank sensor == Use MegaTune. Spin the engine. Watch the rpm value. What to do if it doesn't work. == Step Seven - Connecting the Water Temp. (CLT) Sensor == * EC36-pin14 Signal * EC36-pin26 Ground (also ground to the engine block close to the sensor) == Step Eight - Connecting the Air Temp. (IAT) Sensor == * EC36-pin2 Signal * EC36-pin26 Ground (also ground wire to the engine block close to the sensor) == Step Nine - Configuring the temperature sensors == Use EasyTherm to build tables. Upload tables. == Step Ten - Testing the temperature sensors == Using MegaTune. Check ambient temperature with thermometer Check sensors reading on MegaTune or Motuner, compare with thermometer. Apply known heat (boiling water) and check reading. Apply known cold (ice) and check reading. == Step Eleven - Connecting the Throttle Position Sensor (TPS) == * EC36-pin28 +5v out * EC36-pin1 Wiper out (0-5v) * EC36-pin26 Ground (also ground wire to the engine block close to the sensor) == Step Twelve - Configuring and testing the TPS == MegaTune TPS setup. Steps and screen shots. == Step Thirteen (Optional) - Connecting WBO2 Sensor == * EC18-pin13 to WB6-pin1 (Nerst Cell Signal) * EC18-pin7 to WB6-pin5 (WBO2 Pump-) * EC18-pin18 to WB6-pin4 (WBO2 Heater) * EC18-pin9 to WB6-pin6 (WBO2 Pump+) http://vems.hu/www.vems.co.uk/VEMSUserManual/ConnectingWBO2Sensor.png Before we plug the wide band in we need to do some tests and calibration, the first is 'Pump Zero DC', you will need to take a reading with a DVM across pins 5&6 of the Wideband connector. The ideal voltage is zero, to adjust the voltage you will need to change the values of ''wbo2_pump_pw_zero'' in config.txt Ideally the value should be between 0x64 to 0x66 and the values make a big difference, for example at 0x65 I measured 0.10v changing to 0x64 resulted in a reading of -0.17 and 0x66 took the reading up to 0.5v == Step Fourteen - Testing WB02 Sensor == Fresh air reading Configure value to read fresh air O2 level == Step Fifteen (Optional) - Connecting EGT Sensor == Temp. compensated cable, blah blah blah. Before we can rely on the sensor's readings we need to calibrate VEMS. This is best done using boiling water as we know that at sea-level this boils at 100degreesC. Make sure that the sensor does not touch the sides of the vessel containing the boiling water as this will result in an inaccurate reading. At 100degreesC the voltage fromt the sensor (measured across pins 1&8) should read:4.095mV and AD597's output (pins 4&6) will be 1005mV. Calibration is required to enable VEMS to display and log the temperature value correctly, there are two values in the Config file that are used to do this: egt1_cal=40 # EGT calibration multiplier egt1_offs=00 # EGT offset (signed e.g. 0xF0 is -1) (The change values are quite small so try increasing in steps of +/-0x5 initially.) The EGT reading should be on the LCD screen's first page, to show EGT alone you can use Bray terminal to change to page 8 by using the command: Manmde08 Put the first few centimeters of the thermocouple onto some ice and watch the value on the scree drop. Adjust the calibration values until the egt reading is zero. Then using a known temperature heat source (like boiling water) to Check that the egt value is correct across a wide range. Example EGT Sensor ---- Flyback - EC36pin23 '''very important''' that EC36pin23 is connected directly (wihtout fuse in between) to all injectors (the injector common + signal). The injector common + signal is connected with a 10A fuse to a switched +12V supply (often called node15). ----
Optional: Add document to category:
Wiki formatting: * is Bullet list ** Bullet list subentry ... '''Bold''', ---- is horizontal ruler, <code> preformatted text... </code> See wiki editing HELP for tables and other formatting tips and tricks.