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I have a 150 Hp 25 hz motor I would like to install a vfd on it to eliminate the MG set. My concern overheating/ overcurrent in the windings. Is it really an issue? will the speed setting to actual motor speed be say double if i set it up as a 50 Hz motor?? thanks in advance,Joe

It is serial comms and, I did get it talking and it looks to me I will be able to select the pattern by writing to the buffer location. The Kepware works really well, auto tags and all. I do realize i will need to build a GUI. Currently they are using another data Aq package that will talk to...

I am looking for anyone who has used the kepware opc software to select or program patterns in a UP750 controller?? I am thinking it will only allow me to select from preprogrammed patterns which would be fine. Any help would be great!! Sorry if I posted this in the wrong forum!! Joe

Thanks I have been searching HW sites for this all day!! Joe

I am looking for any info on AB PLC integrated to honywell 7800 series flame saftey via controlbus comms. I am looking to use Flex I/O or a controllogix plc and it would be great to just talk to the flame relays.

I am working on a heat treat furnace and i need to know at what temperature rage does,Oxyegn,hydrogen and nitrogen start to get infused into the titanium? We and the customer and I are not sure if we want to build and indirect fired or direct fired furnace. I have seen heat treating for...

THe rads are from a hot water system. It looks like they were running with about 14 gals/mi. That is the flow rate of the grundfoss 15-42 pump that was on the old system. I guess that would be a good starting point. Taco makes a 3 speed pump I might go with to give me some flexablity. Joe

Thanks everyone for your input. Does anyone make a preheater for incoming air?? I expect you are talking of the intake air piping. I could get a fin tube and run it inside the intake air pipe.Would this be good?? I would be happier to buy one from a supplier that has been making them for years...

I am going to replace a 40 yr old boiler with a new mod-con boiler. I will be heating with old cast iron radiators. I am going to zone the first and second floors and have a primary zone for the indirect water heater. I am going to have pumps for each zone. I am just not sure of the flow rates...

Thanks for the suggestions,joe

There are simple modules that will take one signal and has 2 outputs look up mighty module or API. I have used these in many places with excellent results. Joe

Would anyone know of a good collection of blocks for ladder drawings?? I have made many of my own but i would think that someone has put many of them in a collection. It would save me lots of time. Thanks,Joe

Gents, I have equipment that I have designed that passes the uniformity standards of 2750C. What are the changes in temp uniformity standards in 2750D? I have a customer that is asking if my equipment will pass 2750D and i think it should be no problem because i was within the 2750C by...

One thing i have done is place the connector(any type tc) in a ziplock bag with a gob of silicone in it. then form the silicone around the connector. Leave sit for a few days. Then remove the bag.I have done this with many different mfg connectors. I have some that have been in direct weather...

I think there are positive displacement units out there that could that flow and pressure with very good accuracy. I would suggest getting a pulser output send it to a recorder and do the math in the recorder. This is not cheap but i have done it before and have had good results. Joe

I have used the barber coleman 658 converters many many times and they work very well. You will still need the slidwire to work to let the op amp in the converter know the actual position the motor is in. Good luck,Joe I am sure the local honeywell rep would build you a model # for the new...

Thanks,for all the good info. In speaking with others and gathering info i have found a few "rules of thumb" and they will work so i can work up a budget proposal for the diffent quench tanks and cooling equipment i will need. This is something that many stainless and alloy producers have...

Thanks,kenvlach I will read the chapter for sure!! Yes i do understand the issuse with vaporazation somewhat. I currently have my customers metallergist telling me the quenchants they are going to be using i.e. oil and water quenchant mixture. Then I am going to try the vendor and see how...

Thanks for the quick responses, We will also be building an air quench bench for these parts. The bars will be from 2" to 6" in cross section mostly rounds.We also have the possiblity of 3" x 6" x 12.5' flats. The big problem is we are still in the proposal phase and i would like to reduce the...

Gents, I am in the process of putting a heattreat facility together for stainless and alloy steels. It will be a l x w x h--- 30'x6'x 5' It looks like the level will be around 48"Dp to allow for displacement. I am thinking of using the same size tank as a cold tank recirculating the fluid from...