Actisense EMU-1 Engine converter analog to Digital

Discussion in 'Reviews' started by SKybolt, Oct 19, 2020.

  1. WSchlesner

    WSchlesner New Member

    3
    May 3, 2021
    Stamas Center Console, Inboard Diesel
    440 Yanmar Inboard Diesel
    Have you gotten the boat out at all this Spring yet since getting in the 3rd EMU-1? Wanted to see how they all perform together.

    I’m working on getting a single EMU-1 configured for my Center Console and saw what you’ve been doing and wanted to reach out. I’ve been in contact with them and they fixed my issues so far by having me roll back my firmware.

    You may also know my fathers business as he is on the island often working since he is a diesel mechanic. East Coast Diesel Services. Our boat is down in Fenwick, DE.
     
  2. SKybolt

    SKybolt Well-Known Member SILVER Sponsor

    Nov 11, 2014
    Kent Narrows, MD
    Reel Nauti
    460 EC
    Detroit 6v92TA
    (Low profile's)
    Alison Gears
    Westerbeke
    12.5kw Genset
    That's funny, I have your fathers bis. card on the dash of my truck. Just spoke with him two weeks ago.

    No I have not gotten to the trial run yet. I have been servicing the engines and waiting for my swim platform to arrive, after that I will test run everything outside of the slip.

    On a side note, Actisense is on the 2nd beta release candidate and have fixed a number of items that were not working correctly. So my testing will be of that firmware and not the version you currently have.
     
  3. Richard Vaughn

    Richard Vaughn New Member

    6
    Jan 2, 2021
    1990 Ocean Yachts 48 M/Y
    6-71 TIB Detroit Diesels
    Did you run new wire to each sensor? If so what is required and where is a good source to purchase it?
     
  4. WSchlesner

    WSchlesner New Member

    3
    May 3, 2021
    Stamas Center Console, Inboard Diesel
    440 Yanmar Inboard Diesel
    That is funny! Let us know how it goes once you get out on the water, looking to see how well the three work together.

    Do you have them all displayed on the same unit or do you have multiple different displays?

    I'm looking forward to the new software, I tried to get on the beta testing to help provide feedback. But they want to keep it small so hopefully it will be soon. A few of my fathers close friends have some older engines and would like to get this which is why we are doing it on our boat first to make sure that it all works out well. So far from rolling back to 0.70 there haven't been any issues except for configuring the gauges you have to upgrade and then downgrade again.
     
  5. WSchlesner

    WSchlesner New Member

    3
    May 3, 2021
    Stamas Center Console, Inboard Diesel
    440 Yanmar Inboard Diesel
    This is my current setup for the EMU-1. The engine harness comes up to the harness bar and then over to the EMU-1. I have to clean up some of the wires but it works at the moment now. Each alarm has their own wire to the buzzer alarm and to the sensor that triggers the alarm. My father understands more on the engine side while I work more on the electronic side of things.
     

    Attached Files:

  6. SKybolt

    SKybolt Well-Known Member SILVER Sponsor

    Nov 11, 2014
    Kent Narrows, MD
    Reel Nauti
    460 EC
    Detroit 6v92TA
    (Low profile's)
    Alison Gears
    Westerbeke
    12.5kw Genset
    I put in new senders with isolated grounds for temp, temp alarm and oil pres. kept the existing oil alarm. I used 16/6 marine wire, one run for each engine. I also used shared wire for the ground which originates with the EMU-1 and is the ground used for all electronics. So the senders are isolated from the engines grounds. I had purchased the wire a while ago just for this when I was using the Chetco G2 but never used it until now. So not sure where I purchased it.
     
  7. SKybolt

    SKybolt Well-Known Member SILVER Sponsor

    Nov 11, 2014
    Kent Narrows, MD
    Reel Nauti
    460 EC
    Detroit 6v92TA
    (Low profile's)
    Alison Gears
    Westerbeke
    12.5kw Genset
    I have everything configured and set up for three engines (instances 0, 1 and 2) and all on the NMEA 2000 bus. There are two GMI 20's dedicated for each engine as multi-gauge like the newer rays have. The GMI's power up with the EMU's that are powered off of each engine breaker. So nothing special to do when starting the engines. The generator EMU is powered off of the Fireboy engine safety breaker. I also have two DSM410's that are for a system monitor and generator display. The DSM's power up on their own separate breaker as do the rest of the electronics on another. All of this can be displayed on the Garmin MFD's as well.

    EDIT: added helm pic
    Zoomed-Dash.jpg
     
    Last edited: Jul 12, 2022
  8. SKybolt

    SKybolt Well-Known Member SILVER Sponsor

    Nov 11, 2014
    Kent Narrows, MD
    Reel Nauti
    460 EC
    Detroit 6v92TA
    (Low profile's)
    Alison Gears
    Westerbeke
    12.5kw Genset
    Just a follow up on my sea trials. So I have taken a few trips in the past few weeks and haver verified that this setup works great. I almost trust the digital gauges more then my remote electrical ones tied to the same sender (temperature) as the digital seem to match the mechanical ones on the engines perfectly. The tach's are still a little jumpy, but I am still on the beta RC1 firmware release there is a second (RC2) and also a final release that I have not tried out yet. So I am hoping there final release is a bit more stable of a tach reading. But all in all I could not be happier with this setup and their configuration software works perfectly!

    I still need to create a temperature curve for the generator as that was not calibrated and doesn't seem to have any canned curves that work right. But that can be done at the dock so should be very straight forward and only a few hours of calculations.

    On a side note for the generator, I added a pulse generator circuit I picked up from Amazon for $8 to be used as a tach signal to be able to log generator hours (didn't care about the tach reading as that is not being used). I hooked that up a week or so ago and it seems to work perfectly. So now all engine hours are being logged digitally and readouts can be displayed both system monitors (Maretron DSM 410) as well as temperature, oil pressure and voltage alarms.

    I will post back regarding the newer firmware releases and whether that fixes the RPM jumping around. I will also test with and without my clamping circuit mod.
     
    Last edited: Jun 1, 2021
  9. Richard Vaughn

    Richard Vaughn New Member

    6
    Jan 2, 2021
    1990 Ocean Yachts 48 M/Y
    6-71 TIB Detroit Diesels
    Anyone in the Boston, MA area have NGT-1 interface I could buy/rent/borrow?
     
  10. SKybolt

    SKybolt Well-Known Member SILVER Sponsor

    Nov 11, 2014
    Kent Narrows, MD
    Reel Nauti
    460 EC
    Detroit 6v92TA
    (Low profile's)
    Alison Gears
    Westerbeke
    12.5kw Genset
  11. SKybolt

    SKybolt Well-Known Member SILVER Sponsor

    Nov 11, 2014
    Kent Narrows, MD
    Reel Nauti
    460 EC
    Detroit 6v92TA
    (Low profile's)
    Alison Gears
    Westerbeke
    12.5kw Genset
    So I had the chance to upgrade to the latest firmware and found it to be pretty nice with the exception of the tach signal being a bit bouncy. All of the other parameters were rock solid and am growing to trust this more then the electronic temp gauge. Going to attempt to figure out why the tach signal is bouncy. It's as if the averaging is not working. I might even try a tooth counter or optical sensor to see if that is any better.

    Either way I am extremely happy with these EMU-1's and very glad I switched. The only thing left is to plot the generator temp. that is off as I forgot who's sender I used when I replaced it. Might switch to a VDO and use a standard curve.
     
  12. Richard Vaughn

    Richard Vaughn New Member

    6
    Jan 2, 2021
    1990 Ocean Yachts 48 M/Y
    6-71 TIB Detroit Diesels
    A few places have the ISO version available like Tackledirect. The USB version I'm told should in the US by the end of the month. What's the difference from the USB? I assume it comes with a pigtail instead of the USB. Would I be able to use it?
     
  13. Richard Vaughn

    Richard Vaughn New Member

    6
    Jan 2, 2021
    1990 Ocean Yachts 48 M/Y
    6-71 TIB Detroit Diesels
    I installed one EMU-1 in the engine room and wired coolant temp & alarm, plus oil pressure & alarm to both engines in parallel with the gauges. The instructions say to mount the EMU-1 close to the gauges when wired in parallel but doesn't say why. Is it just to make the wiring easier or does it affect the performance?
     
  14. SKybolt

    SKybolt Well-Known Member SILVER Sponsor

    Nov 11, 2014
    Kent Narrows, MD
    Reel Nauti
    460 EC
    Detroit 6v92TA
    (Low profile's)
    Alison Gears
    Westerbeke
    12.5kw Genset
    It has a 9 pin din connector instead of a usb connector.
     
  15. SKybolt

    SKybolt Well-Known Member SILVER Sponsor

    Nov 11, 2014
    Kent Narrows, MD
    Reel Nauti
    460 EC
    Detroit 6v92TA
    (Low profile's)
    Alison Gears
    Westerbeke
    12.5kw Genset
    The EMU-1 isn't engine room worthy I don't think. It's not waterproof and the heat may affect it over time. JMO.

    The reason for close to gauges is so there isn't long leads connecting the two together possibly causing interference and voltage drops which would cause the gauge and the EMU to read differently. Remember the gauge supply's the voltage bias for the sender, and the sender provides the ground potential for the signal. The two together provide a voltage that the EMU reads.

    I mounted all three EMU's behind the helm and accessible from behind in galley, made life real easy.
     
  16. SKybolt

    SKybolt Well-Known Member SILVER Sponsor

    Nov 11, 2014
    Kent Narrows, MD
    Reel Nauti
    460 EC
    Detroit 6v92TA
    (Low profile's)
    Alison Gears
    Westerbeke
    12.5kw Genset
    Just a mid season follow up, these EMU's have worked out perfectly. So well in fact I don't stare at the temp gauge like I use too. Between the alarms and the digital warnings (in MFD's) I am content with trusting the EMU's now. Makes for a much nicer cruise. So many options for such an old boat.
     
    scooper321 likes this.
  17. SKybolt

    SKybolt Well-Known Member SILVER Sponsor

    Nov 11, 2014
    Kent Narrows, MD
    Reel Nauti
    460 EC
    Detroit 6v92TA
    (Low profile's)
    Alison Gears
    Westerbeke
    12.5kw Genset
    Still working perfectly but I had one annoying thing going on. Every time I started the engines the EMU's would reboot and sometimes lockup. This was a bad situation given I would have to re-start the engine(s) every time this happened. I finally got this fixed and thanks to another thread around here about electronics dying when the engine starts. I started playing around with idea's and this came about and works great, at least so far with limited testing. Will see how the rest of the summer goes.

    Removed schematic - being revised as long term it pulsed a bit. I added the GMI20 to the mix and changed the current draw so this now needs to be revised.

    I had tried the one farad cap with a diode but that kept everything powered on too long after switching off, it took too long for the cap to drain and then the low voltage alarms would start sounding until it was fully drained. Bad idea for this situation, great for higher current draw applications like MFD's.
     
    Last edited: Jun 16, 2022
    dtfeld likes this.

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