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Related Manuals for VEMS v3 ECU
Summary of Contents for VEMS v3 ECU
- Page 1 12/16/2012 Installation Instructions and Setup Guide Jason Russell...
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Page 2: Table Of Contents
Table of Contents Initial Information ............................4 Legal Disclaimer ............................4 Planning Guide ............................4 Getting Started ............................5 Power up on the bench ..........................5 Grounds ..............................5 Power Grounds ..........................5 Sensor Ground ........................... 6 +12V Supply ............................. 6 Connecting serial port .......................... - Page 3 Single coil ............................16 Coil pack ............................17 Coil on plug (COP) ..........................18 Using the Stepper Motor Driver to control Ignition ................18 Ignition Setup ............................19 Index engine ............................20 Injector Model ............................21 Injector Outputs ............................. 22 Secondary Outputs ..........................
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Page 4: Initial Information
Initial Information Legal Disclaimer The authors, advisors, manufacturers, website maintainers or anyone involved in shipping or support are NOT responsible for consequences - even if it's proven that any injury, damage or inconvenience is directly caused by their advice. No applicability of the hardware, firmware, other software, instructions, or documentation for a particular purpose is claimed. -
Page 5: Getting Started
Common Ground point or to the sensor ground branch, that is EC36pin26. Connect Power Grounds to the Common Ground point, or anywhere you like (except the sensor-ground branch) Failure to connect Sensor Ground and Power Ground will damage your VEMS. Even on the test • bench ! -
Page 6: Power Grounds
This may prevent the car from starting even if the engine cranks over. Once you have connected and checked the continuity of ground you can connect your VEMS unit to the EC36 plug and apply the power supply. There is little point in connecting power until... -
Page 7: Connecting Serial Port
Connect the serial port 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). •... -
Page 8: Connect Essential Sensors
The trigger is the engine management system's most fundamental sensor, without one VEMS cannot calculate engine speed or crank angle. If you are connecting VEMS to an engine that has an existing engine management system, if not then a triggering method will need to be put in place. -
Page 9: Configuring The Crank Trigger
VEMS is available configured for Hall sensors, these are more noise tolerant and require a +5V (or sometimes +12V for some sensors) supply. EC36-pin27 Hall signal • EC36-pin26 Ground • EC36-pin28 +5V • Configuring the crank trigger Crank Trigger configuration can be accessed from the Base Setup menu in the Primary Trigger Settings option. -
Page 10: Configuring The Secondary Trigger (Cam)
Just Show. You can have it disable injection if you wish, but it is not recommended. Temperature Sensors VEMS uses two temperature sensors: Inlet Air Temperature which is used in speed/density systems to calculate the amount of fuel required. And Coolant Temperature which is used to meter the required amount... -
Page 11: Iat - Inlet Air Temperature
MAT – Manifold Air Temperature Also known as IAT, Inlet Air Temperature EC36-pin2 Signal • EC36-pin26 Ground • You can configure a custom sensor curve if needed under the Inputs menu with the MAT sensor curve item. -
Page 12: Clt - Coolant Temperature
CLT – Coolant Temperature EC36-pin14 Signal • EC36-pin26 Ground • You can configure a custom sensor curve if needed under the Inputs menu with the Coolant Sensor Curve item. -
Page 13: Tps - Throttle Position Sensor
The standard Bosch CLT sensor curve is included in the Defaults section, and is close to many other sensors. TPS – Throttle Position Sensor The throttle position sensor is used by VEMS to provide fuel requirements in Alpha-N configuration and acceleration enrichment. •EC36-pin29 TPS (+5v) out •EC36-pin1 Wiper out (0-5v) -
Page 14: Secondary Sensors
Secondary Sensors WBO2 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+) • There are 2 standards that are the most common. You must make sure the + and - are connected properly. Everything is the same between the standards other than the colors. -
Page 15: Knock
Although VEMS will work with a variety of knock sensors the ones that have been tried and tested are Bosch, although other 2 or three wire sensors may work.Do not use a single wire knock sensor as they use the common ground of the block to create the circuit, using the block will inject too much noise into the sensitive knock circuitry. -
Page 16: Primary Outputs
Some Bosch type sensors are 3 wire type, pin3 is the cable's shield. On either type of sensor the shield should be grounded near or on the engine block. Primary Outputs NOTE: VEMS acts as a switch between the Component (injector, relay, ignition coil) and ground. VEMS does not provide the power to these components. Connecting Ignition Components The unit can be ordered with one of five possible Ignition Channel Options. - Page 17 Option 2+6 Two channels are high current, the other 6 are logic level: Option 4+4 Four high current channels, Four logic level: Option 6+2 Six high current channels, two logic level:...
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Page 18: Example Coil Connections
The following connections suggest the pin numbers as a suggestion only. The actual connections will depend on the Ignition Channel Options as above. Single coil In some instances you will want to keep the distributor, in this case VEMS can be configured to use the original coil as shown. -
Page 19: Coil Pack
Coil pack Connecting a two coil (4 cylinder wasted spark) Additional coil packs, for applications such as 8 cylinder wasted spark... -
Page 20: Coil On Plug (Cop)
Coil on plug (COP) Individual Coil connections are shown, the pins connect to the negative '-' side of the coil. Using the Stepper Motor Driver to control Ignition In some cases it has been found that we need to drive external ignition amplifiers (ignitors) using the higher current stepper motor driver. -
Page 21: Ignition Setup
•Coil 00 EC36-pin35 to Stepper A EC18-pin4 •Coil 01 EC36-pin33 to Stepper B EC18-pin10 •Coil 02 EC36-pin34 to Stepper C EC18-pin5 •Coil 03 EC36-pin36 to Stepper D EC18-pin11 Ignition Setup Set the dwell and number of ignition channels used on the Base Setup → Ignition settings menu. Set the firing order in the Base Setup →... -
Page 22: Index Engine
If you have a coil on plug or coil near plug coil setup, you can still run wastespark by enabling the Dual Output Mode. With this setting, each ignition entry will be two pins. You must make sure they are on opposing cylinders in the firing order. -
Page 23: Injector Model
Injector Model Choose the number of primary injectors, usually the number of cylinders. Divider is usually 1. For high impedance injectors, PWM DC should be 100% and Peak Time should be 25.4ms. -
Page 24: Injector Outputs
Injector Outputs Setting the injectors like this will work fine, it's not important which injector fires when except for emissions. You can set the injectors to firing order, but it is generally recommended to wire up the injectors to the cylinder firing order. For instance, Injector 1 goes to the first cylinder that fires. Injector two goes to the second cylinder that fires. -
Page 25: Inputs
Idle Air Controller Setup is under the Starting/Idle menu in the Idle Control General item. There are 3 main types of supported idle controllers. A simple On/Off type where it just opens a valve to activate high idle, a PWM type where it has more granular control of the valve, and a stepper type that uses a stepper motor to adjust the idle valve opening. -
Page 26: List Of Authorized Resellers
List of Authorized Resellers... -
Page 27: Appendix
Appendix Connector pinout...
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