04-30-2011, 10:56 PM #1
How the Cooling Mist CMGS System X "progressive failsafe" with autolearn works
This is all from Cooling Mist:
The new CMGS System X is going to be released shortly. For those of you that have our CMGS FS system and want to upgrade as well as those of you that want our new system its important that we discuss how things work.
We designed the CMGS system in 2008. It was then and is still the only progressive gauge controller on the market. It was and is important for us to innovate. In 2009 we realized that we needed a failsafe system. We then changed the flash to allow the failsafe. (V 1.04 to V1.08).
The way that failsafe works is as follows. There is a flow sensor, you set up the parameters for the failsafe. Lets say you are running a M10. You setup a flow window and a boost threshold. You may set the low flow window at 500 and the high flow window at 950 for example and the boost threshold at 12. using those numbers, anytime you are higher than 12 PSI and now within the 500 and 950 cc/m, the failsafe will trip and your map will revert. That leaves a very big range. You could have partial clog or leak and not know it. Also, you have to be past your boost threshold before it will trip.
How does the new system differ? For 1 thing you just install it and go. The system autolearns and turns your failsafe on automatically. It does have a mode to let you manually turn the system on to make it learn if you want as well. There are 2 failsafes that you can run. One option is to run the flow sensor with the FCB. The other option is to run the FCB by itself. The FCB (fault control box) looks at the pumps activity and logs atleast 4 params. From this we are able to log those numbers at dutycycle and determine if things are working correct. FCB does not care about flow. The flow sensor looks at flow. It does not care about pump pressure or any thing else. These sensors will catch many of the same errors, but running them both gives max protection. The flow sensor is not compatible with more than 70% meth so if you wish to run a higher concentration you can only run the FCB.
Ok, now that we have a basic understanding, see the charts below.
In the flow table above you see the flow rate, dutycycle as well as the accepted tolerance that is programmed. By default we have a 10% tolerance on either side (this can be adjusted by the user from 1 to 50). The bolded number is the recorded flow by the flow sensor. The high and low that you see is the window where the system will trip if the flow ends up outside those numbers. Its important to note that if you have the flow sensor you must have the FCB. The CMGS would also record the FCB information in the table below. So it would look at any errors in either failsafe and trip if necessary. We show you 30% to 100% DC, however the system logs from 25% to 100% so you are covered anytime during the process. You have the ability to set the tolerance as low as 1%, we chose 10% to be the tolerance for flow to eliminate any false alarms and trip the failsafe when there was a real problem. You can play with it and set the tolerance closer if you want to specific to your situation. The chart below and above is a CM10
In the table above we have a FCB (Fault control box, failsafe control box, etc). You see from 30% to 100% the value that is recorded in bold. This is the auto learned value. This value is made up of several pump feedback electronics that we log and sample. By logging all of these values at the specified DC, we know how the pump should or should not be working. From 25% to 59 we have a 20% tolerance in the pump settings, from 60 to 100% there is a 3% tolerance. If the actual pump values logged vary by more than that % it will trip the failsafe. You can set these in the configuration to any variance you want, however to prevent false alarms during testing 20% on the low DC and 3% on the high was perfect. At the mid to high DC where you need it most the FCB has only a 3% tolerance so anything that is not right it will pick up on it and trip the failsafe.
Which is better, the FCB or Flow Sensor?
Both work well. The FCB was designed for those of you that dont want to run any water at all. It never comes in contact with any fluid so its reliability is going to be proven very well. At low dutycycle (pre-60%) the flow sensor is going to detect faults better. After 60% both the FCB and flow sensor are outstanding. One example where the FCB is better, lets say your pump is malfunctioning and running very hot. Your system may be at full flow and flowing correctly, meanwhile your pump is overheating and the electrical draw is off the chart. The FCB would trip your failsafe and the flow sensor would not catch this. Eventually if the pump failed from overheating or what ever was causing it to malfunction, the flow sensor would catch it. The FCB would catch it long before the flow sensor.
05-01-2011, 01:46 AM #2Member
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WHEN ? !!!!!! how much to upgrade to FCB ? I have the vc2 with the flow sensor, but don't want to run the flow sensor, Thanks !
05-01-2011, 12:01 PM #3
05-01-2011, 05:44 PM #4
05-01-2011, 05:51 PM #5
05-01-2011, 06:04 PM #6
05-07-2011, 08:14 AM #7Guest Vendor
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also, there is alot of mis-information being spread on the other forum
Originally Posted by tuning god on e90
You can look at the flow table in Post #1 and see the flow range is from 260 cc/m to 810 cc/m with a M10 nozzle. That far greater than the 1 to 1.4X that Shiv is mis-informing everyone about.
Lastly, dont anyone forget the biggest part. The PWM valve that our competitor uses changes pressure to change the flow rate. The only way to change flow is to change pressure. We used to have a high speed valve system and we discontinued because the pump system will flow more, have far less of a pressure drop and you can run alot more pressure into it.
Both systems will work, just dont buy into the marketing.
Last edited by coolingmist; 05-07-2011 at 08:20 AM.