hello, as allways, having some problem with evo trigger, I'm getting less primary trigger at 6500rpm
(http://s4.postimg.org/bqblc60mh/error.jpg) (http://postimg.org/image/bqblc60mh/)
(http://s27.postimg.org/kic139qlb/error3.jpg) (http://postimg.org/image/kic139qlb/)
(http://s12.postimg.org/jc6gwaouh/evo8_error.jpg) (http://postimg.org/image/jc6gwaouh/)
maybe anyone knows how it can be fixed?
there is configuration and logs with errors :)
http://vems.hu/vemstune/bugreports/reports.php?cmd=view&key=3I3PfU
r30 is 2.7k r56 is still in place, on dyno it were running fine with 8500 rpm limiter, on street when car is accelerating fast with low gears no problem, in hi gear like 5 when acceleration is slower it starts getting trigger errors at 6500 rpm :)
imho that would be electrical noise(so bad wiring or ground).
btw to small injectors? What impedance they are?
Quote from: MWfire on November 14, 2014, 01:48:20 PM
imho that would be electrical noise(so bad wiring or ground).
it has oem evo wiring coils changed to audi ones, coils grounded to head, stock ecu had 2 big ground wires I have soldered them to vems 5 grounds, and sensor ground like in vems manual. thinking not use stock grounds, but connect them direct to chassis.
it seems to be low ressitance with resistor pack, 1200cc and we are running them 100% dc and more seems it can cause problem too because of to weak ground link.
Quote from: MWfire on November 14, 2014, 01:49:28 PM
btw to small injectors? What impedance they are?
(http://s22.postimg.org/ymrsfexbl/Page_1_evo_VIII.jpg)
really thanks for that advise, never had problem like this :)
btw, it has 6 wire idle conntrol stepper valve, which has 2 + wires in the middle of each coil, can they be disconected? because now it somehow feeds car dash trough stepper chip when ignition is turned off. I can see dash lights little bit working with ignition off, disconect ec18 connector and dash goes black.
ok, it seems grounding does not helps :) it seems that there is a loose wire or something :DDD totaly no problems on dyno with load even inj dc 120% on road random eroors sometimes even on light load :) work sux sometimes :D
http://vems.hu/download/VemsTune/bugreports/attachments/3I3PfU/v3.3_u009579-2014-11-14-21.24.58.triggerlog trigger log :) looks very nice
is it worth to convert it to simple coil 4+1 trigger? or better is to make something like 12 tooth coil trigger? next week I'll have one more evo for testing, will see how it works :)
More tooth is better.
Don't use 4+1 tirgger.
primary trigger is vr and sec hall?
Quote from: Kamuto on November 14, 2014, 03:00:45 PM
btw, it has 6 wire idle conntrol stepper valve, which has 2 + wires in the middle of each coil, can they be disconected?
Yes
A six wire stepper motor is a Unipolar motor, Vems controls a Bipolar motor. I have successfully run a Unipolar motor with the Bipolar driver that Vems has.
The unipolar motor is made up of four windings in two pairs......... Three wires per pair.......... common wire is the centre of a pair of widnings and would normally be supplied with 12v from a fused power source, and the unipolar driver then alternates the grounds.
You can disconnect the common 12v supply, simply turning the Unipolar motor into a Bipolar motor. Just be sure that each pair of windings are disconnected from each other as the stepper motor I had was five wire, but six pin, and the 12v was common to all. you need to end up with two independent widings for this to work correctly.
For example, a Unipolar motor would normally look like this
A 12v C
| | |
|--~~~~~--|--~~~~~--|
|<--------------------------------------Just be sure that there is no common link between all four windings
|--~~~~~--|--~~~~~--|
| | |
D 12v B
And by disconnecting the common 12v centre tappings you end up with a Bipolar motor like this
A C
| |
|--~~~~~-----~~~~~--|
|--~~~~~-----~~~~~--|
| |
D B
Quote from: MWfire on November 16, 2014, 11:35:03 AM
More tooth is better.
Don't use 4+1 tirgger.
primary trigger is vr and sec hall?
both of them are hall, crank maybe optical, but anyway it does not matter now, engine dead at this moment, not sure it was trigger error or just little bit lean on one cylinder :)
got it working with connected ones, but it works like Shit :) it looses steps or something
Quote from: Sprocket on November 17, 2014, 12:22:30 AM
Quote from: Kamuto on November 14, 2014, 03:00:45 PM
btw, it has 6 wire idle conntrol stepper valve, which has 2 + wires in the middle of each coil, can they be disconected?
Yes
A six wire stepper motor is a Unipolar motor, Vems controls a Bipolar motor. I have successfully run a Unipolar motor with the Bipolar driver that Vems has.
The unipolar motor is made up of four windings in two pairs......... Three wires per pair.......... common wire is the centre of a pair of widnings and would normally be supplied with 12v from a fused power source, and the unipolar driver then alternates the grounds.
You can disconnect the common 12v supply, simply turning the Unipolar motor into a Bipolar motor. Just be sure that each pair of windings are disconnected from each other as the stepper motor I had was five wire, but six pin, and the 12v was common to all. you need to end up with two independent widings for this to work correctly.
For example, a Unipolar motor would normally look like this
A 12v C
| | |
|--~~~~~--|--~~~~~--|
|<--------------------------------------Just be sure that there is no common link between all four windings
|--~~~~~--|--~~~~~--|
| | |
D 12v B
And by disconnecting the common 12v centre tappings you end up with a Bipolar motor like this
A C
| |
|--~~~~~-----~~~~~--|
|--~~~~~-----~~~~~--|
| |
D B
Quote from: Kamuto on November 17, 2014, 04:24:39 PM
Quote from: MWfire on November 16, 2014, 11:35:03 AM
More tooth is better.
Don't use 4+1 tirgger.
primary trigger is vr and sec hall?
both of them are hall, crank maybe optical, but anyway it does not matter now, engine dead at this moment, not sure it was trigger error or just little bit lean on one cylinder :)
when you have trigger error, then ign and inj are disabled. So that is safety feature.
Probably engine is dead duo to small injectors.
Did you try to use hall dirac filter on both input triggers?
Quote from: MWfire on November 18, 2014, 11:44:47 AM
Quote from: Kamuto on November 17, 2014, 04:24:39 PM
Quote from: MWfire on November 16, 2014, 11:35:03 AM
More tooth is better.
Don't use 4+1 tirgger.
primary trigger is vr and sec hall?
both of them are hall, crank maybe optical, but anyway it does not matter now, engine dead at this moment, not sure it was trigger error or just little bit lean on one cylinder :)
when you have trigger error, then ign and inj are disabled. So that is safety feature.
Probably engine is dead duo to small injectors.
Did you try to use hall dirac filter on both input triggers?
no, havent tried it :) will try on another one :) btw, if it's hall on both triggers it not noise I think? yes i have measured knock activity on trigger error, it could not be blown because of this :) I said guy don't be hard on it because triggers need to be chanded and injectors too but he tried max speed in 5 gear or something :)
Hall can also have problem with noise. You can fix that with stronger fitler(software(hall dirac filter) or put 10nF condesantor in parallel for both inputs.)
Quote from: MWfire on November 18, 2014, 02:12:45 PM
Hall can also have problem with noise. You can fix that with stronger fitler(software(hall dirac filter) or put 10nF condesantor in parallel for both inputs.)
will try to scope signal next week :) anyway 2 tooth is not very reliable,
Hello Kamuto,
We support both bipolar stepper motors though stepper chip and unipolar motors through p259, these is some documentation about this on: http://vems.hu/vt/help/v3/v3_idle_stepper_hardware.html
Regarding your trigger it might be some noise issue, but when i take into account the other effects (dashlights dimming/tuning on) i would highly recommend you debug any wiring issues first.
Best regards, Dave
Quote from: VEMS on November 19, 2014, 08:55:25 AM
Hello Kamuto,
We support both bipolar stepper motors though stepper chip and unipolar motors through p259, these is some documentation about this on: http://vems.hu/vt/help/v3/v3_idle_stepper_hardware.html
Regarding your trigger it might be some noise issue, but when i take into account the other effects (dashlights dimming/tuning on) i would highly recommend you debug any wiring issues first.
Best regards, Dave
dashlight was p259 who controls main engine relay :) your new diodes somehow cause it :) moved it on injector channel ant it's fine. p259 channel is working, if I shut off car, dash not dimming, if I turn ignition on and off dash is off but you can see few ligths are getting supply from somewhere :) so that's not noise. got that issue with p259 before on 3.8 boards, if one relay end has +12 when ignition is switched off p259 will trigger it with no ignition, that sucks really, had to rework all wiring to relay supply from ignition switch.