PLC Problem

John Electrician

Anyone here know where i can source the attached PLC. Its a Mitsubishi FX 24 - it controls the storage heating in a block of 55 apartments. It varies the times they switch on at.
It got damaged recently due to flood damage in underground carpark.
Anybody familiar with supply & fitting & programming these let me know - or repair of existing PLC

Thanks

brightspark

Do you have a copy of the program?

John Electrician wrote: »

Anyone here know where i can source the attached PLC. Its a Mitsubishi FX 24 - it controls the storage heating in a block of 55 apartments. It varies the times they switch on at.
It got damaged recently due to flood damage in underground carpark.
Anybody familiar with supply & fitting & programming these let me know - or repair of existing PLC

Thanks

John Electrician

No, unfortunately. System was installed about 14 years ago

Dardania

I was going to post, ask a certain lecturer in DIT Kevin street (that used import them to the country, and coincidentally, all of the controls students were taught to use) but upon googling for him, it looks like he passed away late last year...Quite shocked to find that out

Sentimental moment over, you don't have the program so you're not tied to using a Mitsubishi plc in particular, you can use any type of plc. How did it work I.e was it just switching on and off contractors to a time schedule, or was there other inputs to it. The plc had 4 analogue inputs - were these used for outside temperature inputs?

Whatever you chose, you should go with something easily supported.

Mike2006

I have a couple of these at home. Not sure if they are the exact same model number but let me check it out this evening and I will get back to you.

Mike.

frankmul

Dardania wrote: »

I was going to post, ask a certain lecturer in DIT Kevin street (that used import them to the country, and coincidentally, all of the controls students were taught to use) but upon googling for him, it looks like he passed away late last year...Quite shocked to find that .

Only heard that myself yesterday too, sad news to hear

deandean

frankmul wrote: »

Only heard that myself yesterday too, sad news to hear

aahhhh noo, poor Dave RIP. I hadn't heard. op I have defails somewhere of a guy who is v good with mitsubisbi plcs, I will pm you details next day.or.so, he may be of help.

Mike2006

John,

Found these 2 at home (attached). Not exact replacements.
PM me if they are of any use.

Mike.

2011

From the picture of the PLC in the OP it looks to me that there are:
4 x Digital Outputs, Y0, Y2, Y4 & Y5
2 x Analog Inputs, Ch1 & Ch2

So all in all a very simple PLC.

As Dardania stated above you are not limited to using a Mitsubishi PLC.
Any PLC with that can provide the correct I/O would be suitable. This should simplify the task.

If you had a copy of the programme it would make sense to use exactly the same PLC as this would save you from recoding, but this is not the case.

You also need work out exactly what it is you would require the PLC to do, document same and draw up a detailed I/O list. This can then be given to the individual that programmes the PLC.

Drives2014

John,
We are a Dublin based company that specialise in Mitsubishi control equipment. We supply, program, and commission PLC's and Variable Speed Drives (VSD). Please follow the link that will bring you to our website. We are happy to help in any way we can.

http://www.drivesandcontrols.ie/

DublinDilbert

deandean wrote: »

aahhhh noo, poor Dave RIP. I hadn't heard. op I have defails somewhere of a guy who is v good with mitsubisbi plcs, I will pm you details next day.or.so, he may be of help.

Gosh hadn't heard that myself. Thought me a lot about controls and PLC's along time ago, always found him very good. In the last couple of years i've started using stuff he thought me 16+ years ago, its amazing how it all comes back. RIP David (he hated us calling him Dave in WEET)

2011

A great loss.
David's classes were inspirational and entertaining.
Rather than answering questions directly, he would teach a student how to find the answer for themselves.
My class learnt so much from his vast experience and very amusing anecdotes.

Days before a difficult exam he was asked for a few hints on what was about to come up.
After a lot of pleading he left the room to "look at the exam paper".
He then provided us with a massive amount of "hints and tips", which we all furiously wrote down.
It was only afterwards when we read over all of his hints that we realised that all of his "hints" covered the entire syllabus :D
Only David could trick students into studying like that.

DublinDilbert

2011 wrote: »

A great loss.
David's classes were inspirational and entertaining.
Rather than answering questions directly, he would teach a student how to find the answer for themselves.
My class learnt so much from his vast experience and very amusing anecdotes.

Days before a difficult exam he was asked for a few hints on what was about to come up.
After a lot of pleading he left the room to "look at the exam paper".
He then provided us with a massive amount of "hints and tips", which we all furiously wrote down.
It was only afterwards when we read over all of his hints that we realised that all of his "hints" covered the entire syllabus :D
Only David could trick students into studying like that.

Yea it was only last November I was working with some students doing projects, I was explaining how the Compare instruction worked in the Fx PLC, and how it used the internal relay location you give it and the next 2 locations up for the > = and <.

I realised it was stuff David had thought us 15+ years ago. Then I felt old when I said in my day we used to carry around the PLC instruction manual with us.

John Electrician

Thanks for advise.The Electrician has decided to bypass the PLC as its only one foot off the floor so liable to flooding in future - ESb are installing new digital meters so its a better system for future.

2011

John Electrician wrote: »

Thanks for advise.The Electrician has decided to bypass the PLC as its only one foot off the floor so liable to flooding in future - ESb are installing new digital meters so its a better system for future.

Fair enough.
Be aware that it is likely that you will loose some functionality by doing this as the PLC had some analog inputs connected to it.