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andy thorp

Overspeed light possible?

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There is no direct option to switch an Aux Out on speed.  If you want to use speed then you will have your Digital Input configured and wired as speed.  This means you can use gear detection.  You could set up an output to switch for example on if gear = 4 and RPM is greater than 2000.  In any gear, RPM is directly related to speed.

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Hi Ashley, Tried a whole day to get the gear selection going but only got gear = 0. Speed works well and I have set up a condition of rpm and gear for aux output 8 to switch. It does fine if I remove the gear-greater-than requirement and only rely on engine rpm, but then it comes on at the wrong speed in 4th gear. It does the calibration thing ok and says it is finished for each gear but when I go to ctrl F5 it says speed is ok (same as vehicle speedo) but gear is 0. Only thing i forgot to do was calibrate first gear, as it doesn't go over 15km/h in first (this is a commercial vehicle). I'll try tomorrow making it a 4 speed and ignoring 1st. (we are also data logging operation so need to know which gear it is in). Any ideas, im out of em! another problem that I need to solve rather urgently is that the software only displays open loop idle mode. The old option of open loop/ *not available isn't even there. This is the with V3.28 software. When I open an example setup (subaru V7 base map) the correct items are there along with a whole load more stuff that I don't have like more digital and analogue inputs that would be real useful... How do I get these options enabled. Please could you advise asap as this is rather urgent. I only have till tuesday to get this working properly. Firmware is upgraded to latest version too. Map was made about 6 months ago on the then-current firmware/software. Pls help Cheers, Andy.

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OK, I'm not sure why you are having trouble with the gear position setup... it has worked flawlessly in the past... You should be able to just skip  first gear and set up the others as normal...  Have a try doing it so you start in 2nd gear (calling it first) and let me know how you get on.  Note that if there is any inconsistency in the speed signal, gear calibration may fail.  I assume you have had a look at the gear calibration procedure in PCLink help...

What ECU are you using?  All G3 ECU's with firmware version V1.3.6 have closed loop idle now available.  Make sure your firmware is not too old (check under help menu in PCLink).  Also note that WRXLink G3 ECU's have their own special closed loop system that differs from EVOLink G3, Link Plus G3 and LEM G3 ECU's.

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maincode firmware version 1.3.6 BootCode Firmware Version 1.1 BAP calibration 65533 MAP calibration 1 Support BOard Revision 0 Main Board Revision 1.7 ECU Type LinkPlus G2 ECU Serial Number 1152 LinkID 1012 ECUMinSpec 3.28 Does G2 mean that I am using the wrong firmware? I haven't yet understood the difference between a G2 and G3 :) I found that by selecting idle solenoid that I can get closed loop going but of course I am using a stepper (6 wire Mitsubishi) and the options disappear if I change back to stepper. In a desparate attempt to stabilise idle I tried to make a on-off controller by wiring the aircon on signal to a aux output so that the idle would step up if the rpm goes below a threshold. The aux output and the aircon signal switch correctly but the steps count does not increase at all. I have set it to increase by 20 and 50 (max) but nothing changes. COuld you pls give me some advice on what I am possibly doing wrong. I tried the steering and the engine fan options too but none will increase the step count, although each shows it is switching in the runtime displays. Now Im confused and only have two days to sort it out :|

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Difference between G2 and G3 is mainly hardware.  Closed loop stepper is not available for G2 ECU's, it is a G3 only feature...  Firmware for G2 and G3 ECU's are exactly the same, you have the correct firmware.

As for the idle step up, yes you have descovered a firmware bug.  With all the changes to G3 idle, G2 idle has inhereted a small bug.  If you roll back to firmware version 1.3.5 (download from our www) you will solve this problem.  I have bench tested V1.3.5 today and all is OK.  There are no other new features available for G2 in V1.3.6 so you wont lose anything by rolling back.  This problem will be fixed in the next firmware update, sorry for the inconvenience. 

Did you get gear detection working?

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Thanks for the info. I rolled back to 1.3.5 and the idle up for the aircon works, but not the steering or fan options. I cant actually find the fan option on the selection of digital inputs either. At least the aircon can cycle now without loading up the engine, but I have no antistall function. The driver will just have to learn to rev the engine before taking off for now. These guys are so used to diesel engines with good idle torque that they just let the clutch out and stall it all the time. As far as gear detection goes, no luck. The speed reading doesn't seem to go from the input value (displayed correctly) to the gear detection bit. I tried making a speed limiter by leaning out the fuel at 95km/h on the dual fuel table and it worked very well, but I needed gear detection to stop it coming in in 4th gear. Then I tried using the 4D table with speed and engine rpm as axis. This would have worked better than the other way of doing it, but again the speed signal doesn't get sent through to the 4D table. The speed reads correctly on the runtime display but the table only moves in the first row (0 km/h) I have just left it off for now and will try sending them some software update if/when available. Thanks very much for your help with these problems. Although we didn't get it fully working this time I think it has been a good learning experience for the people I am working with regarding the reality of implementing new and untried systems...

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We are working on a firmware update to fix the A/C step problem.  I am not sure why you are having trouble setting up gear ratio status???  We will enable the manual gear ratio table in the next firmware release.  Why can you not use the standard vehicle speed limit in the Limits menu?  Gear detection is not required for that.  Do not lean the motor at high load in case the driver keeps up it at this point and damages the engine!   The G2 isn't exactly a new and untried system... There have been thousands sold and with very few problems...  Some of the issues you have are a result of a major firmware upgrade for the release of new G3 ECU's, but some issues such as gear detection not working are a bit of a mystery.  Most people use gear detection (especially for motorsport) with no issues!!!  I would like to keep working with you to get these issues sorted and get your vehicle completely up and running...

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Hi Ashley, Could you pls give me an update on the idle steps issue and also on how you are going with the 4D table using speed on the Y axis. Just a note on the method of speed limiting I am using- the fuel we are using has wonderful properties in that it detonates only around lambda 1 and is completely free from detonation >lambda 1.2. This allows us to very safely use leanout as a power limiter. The fuel economy gets better right up to the point of lean missfire about lambda 1.6 so in the best interest of not wasting fuel, we run it as lean as poss, unthrottled at all but low power/idle. If I set a spark cut speed limiter, the driver will just sit on the limiter all day and tip half the contents of the fuel tank down the exhaust pipe...

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OK, we have already fixed these problems in the current FW version...  I did some more looking into your gear detection problem.  The ECU requires decending gear ratios.  Because you cant calculate 1st gear, and get a ratio of 0, second gear wont work (because first gear is not higher!).  We will enable the manual gear ratio entry table, you can then enter the ratios directly from the runtime value at the bottom of the screen.  The GP outputs on Gear </> have also been made visible.  Download firmware tomorrow (not today) and all your bits will be sorted.

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Thanks Ashley. Does the 4d table with speed vs engine rpm work ok on your test bench? I would prefer to use this as speed limiting because it gets away from the gear detection thing (easier to setup without having to know much about the vehicle). It also allows me to use the dual-fuel table for other functions like low temp power limiting to stop them thrashing a cold engine. Could you pls check that the digital inputs have the option of steering and engine fan available, and that they actually increase the step count in the idle speed control when activated. If possible, could you please change the limit of max 50 idle steps increase to say 120? 50 is not enough for what I am doing.

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Yup, the 4D table has been fixed to work on speed (there was a problem).  All idle up steps have been checked and a few fixed.  They all worked with closed loop idle (which you should be using), but had problems sometimes in open loop idle mode.  Fan step is internal and requires no digital input and power steer step works on a DI.  There is possibly a reason why the step count is set to 50, we cannot up it without checking that it will not cause a problem elsewhere (such as a maths error).  I will however add it to our list of customer requests.

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