I havent been Metasys trained although the boss has promised for the past 9 months i would be sent for training. Anyway, i have a situation where the 2nd floor of one of our buildings will not cool down. There is a setting, if memory serves, in Analog Inputs, thats set at 100 degrees and the S/A temp is above 80 degrees. The other rtu in that building that services the ground floor has a setting of 64 in that same Analog Inputs tab with no temp issues. Any and all help would be appreciated as im getting hounded about this, and not sure how to fix it. The Metasys version is 4.1.5.0900, and it has NAE controllers
LOL I work with this EMS outfit they splane me stuff and im like whhhhaaaaaatttt? and they still let me play with the numbers on the site lol once I had an remote operator put an offset of 75 degrees in instead of lowering the set point to 75 degrees and turned on all the duct heaters in a hospital ER set off smoke detectors and kinda had a circus soooo yeah I like the EMS guys to do their thing.
Call JCI to take care of it. Your boss will be more than happy to send you to Metasys class after he gets done paying their bill at $150/hour...
aint analog input the reading you getting from the unit suoppling? i think you looking in the wrong place. look at the setpoints and then set them there. not even clear on what type of equipment ya have?
analog input is simply a sensor reading a value, either voltage or current. your problem is most likely someone changed a setpoint and you just have to find it. Bas inputs are either digital or analog in techie speak. digital is contacts opening or closing, analog is a varying signal either 0-10 vdc or 4-20 ma. Bas outputs are the same thing, digital or analog. Digial is a light switch, on/off. analog is a signal 0-10 vdc or 4-20ma depending upon which techie sets it up, and no they dont all do it the same. Remeber, computers are glorified light switches, either toggle or dimmer it makes it easier to understand. attached to those light switches is some code and therein lies the problem. every techie does it a little different, and on each job. all the code does is think in place of your brain. it is looking for a leaving air temp of x, but it is x plus ten, so it flips the switch for you so you dont have to stand there doing it all day. right now it is only trying to do what it is being asked, that is supply hot air to your space. you want it cooler, you gotta tell it brother.
I found some setpoints, specifically zone temp setpoints, and have changed them, but nothing seem to change the zone temp.
Its my hope that someone here can point me in the right direction, where to look to solve the problem.
A little more info would be helpful but here goes. There probably is a Unitary Controller (UNT-____) in the RTU that is controlling it. The NAE holds (basically)the database and schedules for the controllers under it. These are some basic points of what you see at the monitor. There may be more Rm-T Analog input. Its possible to override it, but only for testing and you likely don't have permissions to do that SA- T Analog input. Its possible to override it, but only for testing Fan-S Binary input. To prove fan status If you don't have it this could lock out the cooling FAN-C Binary output. To turn on the fan CLG-1 Binary output. CLG-2 Binary output. RMT-SP RM temp setting OCC-S Occupied status Often the controllers work fine and problems are elsewhere unless someone started changing setting they should not have Is there a freeze stat tripped? or any alarm points showing up? Is the schedule set?
