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Pin Assignment for DCCD Control
Posted: Fri May 09, 2014 9:00 pm
by Pedro
Hi,
Can anyone tell me the Output Pin Assignment to control the DCCD?
I´ve already looked on the Software/Pin Assignments and couldn´t find anything specific for that function.
Cheers
Re: Pin Assignment for DCCD Control
Posted: Fri May 09, 2014 11:49 pm
by pat
Pedro,
Pretty much any output is capable of generating a suitable waveform to control the DCCD, although some must go via an external buffer / amplifier. Were you thinking of connecting directly or using an external driver box to control the DCCD current ?
Cheers,
Pat.
Re: Pin Assignment for DCCD Control
Posted: Sat May 10, 2014 5:28 am
by Pedro
Pat,
May i use one of the ignition outputs from the S8 and connect it directly to the dccd coil?
If so and if i use, for example, ignition 7, what funtion should i assign from the list on the software? Diferential pressure control centre?
Cheers
Re: Pin Assignment for DCCD Control
Posted: Mon May 12, 2014 1:01 pm
by pat
Pedro,
Yes, you can use an ignition output directly on an S8 (but not S6). If you do this without an external flyback diode then you will generate a fair amount of heat in the ECU so you should really fit one if you can. You'll want a 10 amp Schottky diode with the cathode connected to the +12V supply and anode to the output, it will become forward biased when the output transisitor turns off thus limiting the flyback voltage to VBAT+0.6V rather than about 400V!
In the I/O config you need to assign your ignition output to Differential Pressure Control (centre).
Hope this helps,
Pat.
Re: Pin Assignment for DCCD Control
Posted: Mon May 12, 2014 9:49 pm
by Pedro
Thank you very much, Pat.
Will try with the 10A Schottky diode.
Cheers
Re: Pin Assignment for DCCD Control
Posted: Thu Feb 01, 2018 8:17 am
by emi
@pat is the diode needed if i use an h-bride with and ign output in S6 plugin? thx