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Type: Posts; User: Paul Benkovitz

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  1. After a quick search I found...

    After a quick search I found https://www.perle.com/lp/ethernet-modem.shtml I am not sure this will fit your application but there may be more out there. It might be cheaper than a whole new system.
  2. I believe you have it sorted. A trick I use is to...

    I believe you have it sorted. A trick I use is to set the color to something not used like purple, then I let the expression change it to what I want. If it changes to normal but not alarm then the...
  3. It looks like they are calling the "common" a...

    It looks like they are calling the "common" a ground bu it doesn't show the common being bonded. Does that happen in the board? It also shows the gnd/common being daisy chained between boards. That...
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    I have had experience with a system that the...

    I have had experience with a system that the shield was not landed on the controllers. Landing the shield helped a lot. If the building is that small why not just run new cable? If the existing cable...
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    There is a replacement smoke kit...

    There is a replacement smoke kit for british cars, so maybe someone will make one for HVAC.
  6. You can use it with one pressure switch with one...

    You can use it with one pressure switch with one set of contacts. On the first hand drawn schematic you need to move the jumper from 1 and 4 to 1 and 5. This enables power to the compressor control...
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    If I wanted to do that in i-Vu/ALC I would put...

    If I wanted to do that in i-Vu/ALC I would put the overrides in the graphics with a general boolean that could disable overrides in the properties section. I would also have to set any restricted...
  8. You may want to click the black triangle and ask...

    You may want to click the black triangle and ask to have this post moved to controls.
  9. Are you using 2 different pressure units on...

    Are you using 2 different pressure units on purpose? Even if the pressures are all mbar they are still high. Your building pressure monitors may need to be calibrated. Wind at night might also be...
  10. I am not familiar with the board but have you...

    I am not familiar with the board but have you tried a power cycle of the controller. Leave the power off for at least 30 seconds.
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    I have to assume that the MSVs are set to network...

    I have to assume that the MSVs are set to network visible or you would never even see them. You may have to see the program to know what each number means.

    I have seen MSV's words in i-Vu from a...
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    You can get a pressure switch with a low water...

    You can get a pressure switch with a low water cutoff to prevent that from happening. It is a pain after a long power failure because it has to be be held on manually to get the pressure back up.
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    You can connect directly to the board using the...

    You can connect directly to the board using the Rnet terminals and a USB dongle with a laptop running Microsoft Windows. I forgot what the buss is but I can look it up at home as I made my own. You...
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    I am using ((G - D)/E) + D D = output G =...

    I am using ((G - D)/E) + D

    D = output
    G = input
    E = Amount of smoothing, 1 is none, 10 is max.

    It then goes through a ramp set at .05 increase/decrease every 30 seconds.
  15. Thread: IVU 8

    by Paul Benkovitz
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    This sounds great. I am still working in 6.5. Are...

    This sounds great. I am still working in 6.5. Are the create your own microblock included?
    I created a time limited override microblock just to see if I could but of course I can't use it on 6.5.
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    I was going to apply but since I am an...

    I was going to apply but since I am an electrician I have no EPA licence. I have no DDC certs of any kind as I was self taught. I was going to try to send screenshots of some of my programming as...
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    It sounds like the canned VAV program filters...

    It sounds like the canned VAV program filters more when there is no change of damper to prevent hunting, and less or none when there is a change of damper to prevent overshoot. In a fully...
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    That is why they they will have to pry the...

    That is why they they will have to pry the command line out of my cold dead hands. Even the desktop environments on Linux screw things up in updates, but the command line is constant. Just make sure...
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    The only time I ran into a DC buss over voltage...

    The only time I ran into a DC buss over voltage was when a drive was trying to start an already spinning motor. That drive didn't have a catch option so I had it brake before starting. You can also...
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    I self taught by reading the manuals ,going...

    I self taught by reading the manuals ,going through existing programs to learn how they work and how to make them better. I did have digital logic experience from college and a strong background in...
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    This is real, you will sometimes see NAN, "Not A...

    This is real, you will sometimes see NAN, "Not A Number"
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    If you are logged in Google it filters your...

    If you are logged in Google it filters your results based on the past, usually to your detriment. I find the DuckDuckGo tends to fail at technical terms. I keep a separate browser with no Google...
  23. I get that error on i-Vu but it works after I try...

    I get that error on i-Vu but it works after I try again in a few minutes. That is connecting directly with a cable. Perhaps remote will take longer.
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    4-20ma can be easily converted to 2 to 10VDC with...

    4-20ma can be easily converted to 2 to 10VDC with a 500 ohm resistor. The hard part will be a regulated power supply to power the sensor. You will need the minimum voltage the sensor runs on plus...
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    We had one. It was a replacement and it one end...

    We had one. It was a replacement and it one end came off. It dumped the circuits refrigerant into the air stream, set the fire alarm off and before the fire dampers shut allowed enough refrigerant in...
  26. Thanks for the update.

    Thanks for the update.
  27. Everyone thanks for the help. I have completed...

    Everyone thanks for the help. I have completed the lead/lag program and I have created a working temporary override for analog outputs. My plan is to use this in the graphics so that limited users...
  28. I forgot to add that I believe the color is set...

    I forgot to add that I believe the color is set up to go out anytime the connection is lost as a warning that there is a problem.
  29. It sounds like the routers may be fine and the...

    It sounds like the routers may be fine and the problem is with the MS/TP loops on both routers. The only thing I can think of that would affect both loops at the same time is RF interference. That...
  30. I assume that the pro version runs Linux. If not...

    I assume that the pro version runs Linux. If not then this may not be correct. If so I am not sure you want the t option.

    From the Ping man page.
    -t ttl Set the IP Time to Live. You...
  31. The problem may be with the VPN. Try pinging for...

    The problem may be with the VPN. Try pinging for a long time to see if ping times get longer. Check out the logs on the i-Vu controller, that may tell you something. I heard pro has network tools,...
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    Have the contractor redo the speed test on the...

    Have the contractor redo the speed test on the cable. Perhaps an unshielded power cable was run near by or someone tye-wrapped the cable somewhere. If they didn't do a speed test then you know what...
  33. Thanks, I will program my own, then share the...

    Thanks, I will program my own, then share the inputs with the microblock and see how I did. I am not sure if the bug is Trudium only but if not I will find it.

    One of those tridium features I...
  34. Ahh, I have already done one for real. It used...

    Ahh, I have already done one for real. It used glycol for the primary side with a bypass valve to prevent the water side from getting too cold from winter free cooling. The secondary side uses a...
  35. Thanks for the idea. Do you mean a secondary...

    Thanks for the idea. Do you mean a secondary chiller? If so will it be on demand? I will give it some thought on how it the system will work and I will send it to you to critique.

    As for pro...
  36. I was under the impression that controls was...

    I was under the impression that controls was going all pro. I don't have any certs ( I am self taught) and I don't even do DDC in my job at the moment.
  37. I need ideas for a practice programming project

    After I was removed from the i-Vu system I built I have continued programming to learn more and use what I learned. I just finished a RTU program with 4 compressors( 2 digital), hot gas reheat, gas...
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    The i-Vu manual states this: "The lstat output...

    The i-Vu manual states this:
    "The lstat output turns on when the lead and standby outputs are swapped as a result of the swap input turning on. When the go input is off, both outputs are turned...
  39. You will either need a WattMaster Modular...

    You will either need a WattMaster Modular Service Tool Or a CommLink 5 with Prism 2 software on a computer. I didn't link the Commlink because wattmaster.com is blocked on this internet.
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    I keep biofilms out of the sink tanks at work...

    I keep biofilms out of the sink tanks at work with Enviro Care Liqui Bac. Maybe it would help in the condensate pan.
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    So AAON actually did something innovative? The...

    So AAON actually did something innovative? The units I have seen have trays for the upper coils piped down to the lower pan area. Of course I also see them with one or more compressors tripped out so...
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    I would only touch it if it is out of warranty....

    I would only touch it if it is out of warranty. Some times manufactures turn on needed parts with stage one. I restaged a gas burner unit and I had to seperate the inducer fan enable from stage 1 in...
  43. I just fixed a broken plastic pan with "Double...

    I just fixed a broken plastic pan with "Double Bubble" epoxy and cable management covers for support. This pan was broken in 1/2 with a hole to patch and a corner broken off. It actually works. I was...
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    We have a system that can close OA dampers. there...

    We have a system that can close OA dampers. there are CO2 detectors in the rooms, they both increase airflow at the VAV and tell the RTU to add more OA. What really happened is that the detectors...
  45. I have seen Schneider stats with 2 wires only...

    I have seen Schneider stats with 2 wires only that have display and temperature level controls.
    S-link Sensors
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    I know I am late to the party but I had to...

    I know I am late to the party but I had to correct this. In i-Vu (probably ALC also) you can set up almost any sensor to output the correct temperatures. You must go to the "Device Driver" menu of...
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    As an electrician, I am pretty sure that the...

    As an electrician, I am pretty sure that the extra switch was in the NEC and has been removed.
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    I though " at least they didn't reuse the lead...

    I though " at least they didn't reuse the lead pipe" then I saw the second photo.
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    I was only able to test it using a single stage...

    I was only able to test it using a single stage cooling unit and I never completed the testing. It was holding setpoint pretty well but i remember the numbers being crazy high. I no longer have...
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    Like I said it hasn't been tested fully yet but I...

    Like I said it hasn't been tested fully yet but I believe it should work.

    I could post a screenshot but you would need to know i-Vu/ALC micro-blocks to understand it.

    P,I and D base lines are...
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