Author Topic: what set-up did i get as standard? (Read 12448 times)

jago · « **on:** April 11, 2008, 09:38:13 pm »

hello,

according to my order i have:
1 x GenBoard v3.3
6 x Ignition drivers
8 x Injector drivers
1 x Wideband connector (not the same as mine -but will be soon)
1 x Dual channel knock sensor
1 x EGT input amplifier
1 x Idle stepper motor drive

now the questions:

What have i to do to the pcb to use it, as the vems_v3_documentation.pdf says i'll need to add things that are all fitted as it arrived

what ignition drivers are they? 12v or 5v(logic)? - they all the metal backed ones.

the wide band connectors are not the same, the one on the sensor is in-line (1x6) while the vems one is 2x3

where is the best place to add the egt? i have an egr port on cyl 6 which is 1" from the 2nd valve would this do?

jago

gunni · « **Reply #1 on:** April 12, 2008, 08:05:13 pm »

How do you plan on using it?
According to the order you should be fine for most applications.

Those are most likely 12v IGBTÂ´s

That is a good place for the EGT.

jago · « **Reply #2 on:** April 12, 2008, 08:40:36 pm »

my plan is to use it to replace the orignal set-up at first, and then one i have it running nicly to add coil packs.

my ignition set-up is ecu-ignitor-coil(it's not a normal oil filled coil, looks like a single output coil pack)

glad about that i can make a plate to cover the hole up nicly now.

rob@vems.co.uk · « **Reply #3 on:** April 13, 2008, 11:59:08 am »

I'm getting hacked off with this forum, I've only just seen this come up...

The IGBTs are 12V high current

Some external igniters are fired by bridging the gate pin with the output pin as that gives a low current, low voltage (5V) drive for an external IGBT type of driver. We recommend that you use the stepper driver for this where possible.

Regarding placement of the EGT sensor, is there a cylinder that is known for running hot?

Rob

jago · « **Reply #4 on:** April 13, 2008, 09:37:15 pm »

so would it harm the igbt if i used it and the system was not 12v? as the graph from autodata shows the out put from the igniter to be almost 10v. i'm yet to measure the input.

i dont know if any cyls tend to run hot, i'm the only one i know of who is adding vems/anything to this engine.

rob@vems.co.uk · « **Reply #5 on:** April 14, 2008, 08:34:44 am »

If you are running an external igniter then you will want to use the stepper motor driver
http://www.vems.co.uk/forum/index.php?topic=441.0

The Igniter has something similar to the IGBTs in it.

Denmark · « **Reply #6 on:** April 14, 2008, 08:43:20 am »

Quote from: rob@vems.co.uk on April 14, 2008, 08:34:44 am

If you are running an external igniter then you will want to use the stepper motor driver
http://www.vems.co.uk/forum/index.php?topic=441.0

The Igniter has something similar to the IGBTs in it.

Will this be nessery on my setup?

I have made a loop internal to make the ign output to logic level, so i dont suppose that the stepper output is needed for my setup

/Skassa

rob@vems.co.uk · « **Reply #7 on:** April 14, 2008, 06:40:51 pm »

It depends, on the Nissan S13 the igniter module fires all lovely with the logic level.

Not so with the S14 - which was part of the issue with NismoS14's setup.

Check Hillys Lotus V8 thread, he uses some driver chips that provide higher voltage than the logic level control.

jago · « **Reply #8 on:** April 14, 2008, 09:23:26 pm »

ok that's all that sorted. thank you.

jago · « **Reply #9 on:** April 15, 2008, 11:04:22 pm »

i was just looking through the vems_v3_documentation.pdf and all the parts upto 2.2.5 are pre fitted, would this mean it has been tested/ pre loaded firmware?

while reading the trigger section, i noted that i only have 1 LM1815 and both my triggers are VR. where is the best place to get it (not listed in maplin or RS) failing that can i use the cam sensor alone and still run sequential injection?

also while looking in the rescu kit what is the 1A fuse for? (blade style)

rob@vems.co.uk · « **Reply #10 on:** April 16, 2008, 08:31:07 am »

Quote from: jago on April 15, 2008, 11:04:22 pm

i was just looking through the vems_v3_documentation.pdf and all the parts upto 2.2.5 are pre fitted, would this mean it has been tested/ pre loaded firmware?

while reading the trigger section, i noted that i only have 1 LM1815 and both my triggers are VR. where is the best place to get it (not listed in maplin or RS) failing that can i use the cam sensor alone and still run sequential injection?

also while looking in the rescu kit what is the 1A fuse for? (blade style)

Yes, but dont rely on it, you will need to upload the correct firmware and config for your system.

I have no idea what your triggering setup is, a second LM1815 can be bought from the webshop, I'm sure that there are other places as other people use these chips in ECUs.

The 1A fuse is for you to use on power supply to the VEMS.

jago · « **Reply #11 on:** April 16, 2008, 06:22:37 pm »

ah i see.

right see post in triggering.

would this be where the 3A one is pictured in the documents?

jago · « **Reply #12 on:** May 06, 2008, 02:54:51 pm »

hi all,
while wiring my injector fets off board I noted that I would still need to run a wire from the middle leg of the fets back to the flyback diodes.
so bow big does the wire need to be as the current is not going down it from the injectors

rob@vems.co.uk · « **Reply #13 on:** May 06, 2008, 03:19:36 pm »

They use a wire with 0.5mm diameter core for the flyback - along with the transient suppression diode connected in-line.

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