4 channel driver on microsquirt module

http://jbperf.com/quad_ign_inj/index.html

4 channel driver on microsquirt module

Postby jeremy245 » Thu Jun 12, 2014 1:47 pm

hello all, I want to use 4 driver injectors and 4 driver ignition on my ms2 .

I've a microsquirt module v2.2 ( http://www.microsquirtmodule.com/index.htm ) .

Could you please tell me how should I proceed to connect the 4 channel driver board on my ms2 .

Thank you in advance.
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Re: 4 channel driver on microsquirt module

Postby jbelanger » Fri Jun 13, 2014 5:06 pm

I'm in the middle of moving to another city so I can't reply right now. I'll get back to you next week.

Jean
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Re: 4 channel driver on microsquirt module

Postby dontz125 » Sat Jun 14, 2014 1:29 am

I assume you've noticed that this is a bit of a mess. Certain pins on the MicroSquirt Module (uSM) can be wired directly to the mating pins on the 4-channel Driver (4D). Others need a few interposing components.

Connect uSM IGN1 and IGN2 (one wire each) to 4D Ignition 1 & 2.
Connect uSM WLED and ALED to 4D Ignition 3 & 4. Remove the R330 base resistor on the 4D for these circuits; replace with a jumper link. Use the R330 resistor as a pull-up resistor to 5V (uSM VRef).

Delete 4D Q5 and Q6, as well as the associated resistors. Connect uSM INJ1 and INJ2 (two pins each; 5 is overkill) directly to the large pads of Q5 and Q6.
Connect uSM PT6 and PT7 to 4D Injector 3 & 4.
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Re: 4 channel driver on microsquirt module

Postby jeremy245 » Sun Jun 15, 2014 1:19 pm

Ok thank you very much, yes I saw that it was more complicated than expected.
Fortunately you are here to help me and I thank you.
Electronics this is not my field.
Well I 'm trying to do this without losing myself and without bullshit .
Jeremy
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Re: 4 channel driver on microsquirt module

Postby jeremy245 » Tue Jun 24, 2014 1:31 pm

If I understood, I must connect like this:

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Re: 4 channel driver on microsquirt module

Postby jbelanger » Tue Jun 24, 2014 1:36 pm

That is correct.

However, I would use 1K resistors instead of 330R because that's what I use with the IGBTs provided in my kits. If you use BIP373s purchased somewhere else then use 330R pull ups. You can use the unused R3 and R4 resistors for this purposes.

Jean
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Re: 4 channel driver on microsquirt module

Postby jeremy245 » Mon Jul 07, 2014 6:47 am

hello, I made the connection of the board.
I tried to make a coil jumostatique operate using only ign1 and ign2 but there is no ignition :?

After checking everything looks plugged in, I test for continuity with a multimeter, everything is good.

I wonder if it would not be a problem because of microsquirt module that can directly manage the coils according to the instructions.

Here are the electrical diagram of the module:

Image

The BAT54SWT1G may be my problem ?

Thank you.

Jérémy.
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Re: 4 channel driver on microsquirt module

Postby jbelanger » Mon Jul 07, 2014 11:14 am

If everything is correctly connected, it should work fine. Have you tried the test mode?

Jean
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Re: 4 channel driver on microsquirt module

Postby dontz125 » Mon Jul 07, 2014 12:37 pm

The MicroSquirt Module can NOT drive the coils directly. Trying will either accomplish nothing, or damage your Module.

The BAT54 protects the processor pin from voltage spikes, and should not interfere with the ignition signal to the coil driver transistor.
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Re: 4 channel driver on microsquirt module

Postby jeremy245 » Mon Jul 07, 2014 3:45 pm

ok , I misread the manual I actually saw direct ignition coil driving and I thought ...

No I have not tried the test mode.

I just check the gnd I forgot yesterday.

Is it normal that I have 87k ohms between the input gnd pin ( inj side) and gnd out of db15 ? :shock:
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Re: 4 channel driver on microsquirt module

Postby jbelanger » Mon Jul 07, 2014 5:11 pm

The ground on the DB15 needs to be connected to the car ground and is for the high current ground for the injectors and coils; the ground on the input side needs to be connected to the MS board and is the logical ground. If the DB15 is not connected, the high current ground is not connected and there is only a connection through the injector and coil drivers so a high resistance is normal.

If the DB15 is connected to the board with the other end connected to the car ground and the MS is also connected to the car as it should for normal operation, you should see a reading of 0 Ohm between the two grounds.

Jean
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Re: 4 channel driver on microsquirt module

Postby jeremy245 » Sat Jul 12, 2014 4:53 pm

hi, it's work perfectly with good gnd =)

thank You.

Jérémy.
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Re: 4 channel driver on microsquirt module

Postby nicolasronan » Sun Jun 26, 2016 5:03 pm

Hi Jean,
On the V1.1 board we can use TC4427 or BIP373.

What is the difference ? i have read, tc4427 is for logic coil but can we use too, with coil without amplifier integrated ?
what is the avantage of use one or other ?

Sorry for my english
Ronan
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Re: 4 channel driver on microsquirt module

Postby jbelanger » Wed Aug 03, 2016 8:42 pm

The TC4427 is only for logic level coils. For basic coils (high current coils), you need to use BIP373s or IGBTs which is what I provide in my kits for high current coils.

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