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  • #459079
    Stuart Bridger
    Participant
      @stuartbridger82290

      Dave,

      …and your mum used to put a vase of flowers on the TV and top it up with water.
      I still remember the incident from when I was a child, all was Ok until she switched it on to see if it was still working.

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      #459094
      Ex contributor
      Participant
        @mgnbuk

        Please show the manufacturer and model number of this pic – I don’t think it is the unit under consideration at all.

        I realise that the picture isn't the largest, but even with my less-than-perfect eysight I can read "XSY-AT1" on the rating plate. It appears to be a product of the Xin Shuang Yuan Co.Ltd (also on the rating plate) who appear not to have an easily findable website.

        Maybe my version of Google is different to yours (not being funny here – I get different results from my home computer & work computer for the same search term), but searching for XSY- AT1 only gets me these units. There are also AT3 (380V 3 phase input) & AT4 (220V input 380V output) devices. Looking around I can see that there are some Chinese vfds with more exposed terminals, but non of these have been marked XSY-AT1. It would be helpful to have a link to the units you have seen.

        Nigel B.

        #459103
        not done it yet
        Participant
          @notdoneityet

          You are right. It is there. But try looking on you tube. It is very apparent that these units were available with a non-fixed cover. The first hit on epay showed a smaller unit clearly (or unclearly) with a flip-up cover.

          #459134
          Ex contributor
          Participant
            @mgnbuk

            The first hit on epay showed a smaller unit clearly (or unclearly) with a flip-up cover.

            But still with a cover. Covers do not appear to be compulsory :

            sprint-chassis-3200-32i.jpg

            Currently available UK manufactured chassis mount DC drive. Bit easier to access the mains terminals than on a compact VFD with a flip-up cover, but still available for sale.

            Nigel B.

            #459143
            Robert Atkinson 2
            Participant
              @robertatkinson2
              Posted by mgnbuk on 23/03/2020 15:18:22:

              The first hit on epay showed a smaller unit clearly (or unclearly) with a flip-up cover.

              But still with a cover. Covers do not appear to be compulsory :

              sprint-chassis-3200-32i.jpg

              Currently available UK manufactured chassis mount DC drive. Bit easier to access the mains terminals than on a compact VFD with a flip-up cover, but still available for sale.

              Nigel B.

              That is clearly a "component" meant to be incoroporated into a final "product" by a competent entity that ensures it's safeand compliant. Most VFDs fall in the same category it's just not so obvious from looking at them that you need to put them in a box with an isolator, fuse, filter etc.

              Robert G8RPI.

              #459195
              Ex contributor
              Participant
                @mgnbuk

                That is clearly a "component" meant to be incoroporated into a final "product" by a competent entity that ensures it's safeand compliant. Most VFDs fall in the same category it's just not so obvious from looking at them that you need to put them in a box with an isolator, fuse, filter etc.

                Which is the point I was labouring to try & make, Robert.

                In some ways, the type of terminal cover NDIY prefers seems to me to be less safe overall, as it leads untrained users to make the wrong decisions about mounting these (at best) IP20 components – screwing them to walls behind the machine being the all too regular dubious choice. More visible terminals might make some reconsider this approach, though I accept that some might just go ahead anyway regardless of the consequences.

                Nigel B.

                #459208
                Neil Wyatt
                Moderator
                  @neilwyatt
                  Posted by Stuart Bridger on 23/03/2020 11:55:55:

                  Dave,

                  …and your mum used to put a vase of flowers on the TV and top it up with water.
                  I still remember the incident from when I was a child, all was Ok until she switched it on to see if it was still working.

                  After I left uni I had an ancient valve B&W tv. I left half pound of butter on top. Picked it up and lots of it went inside..

                  After that if it wasn't used for a day or two, you had to run it for half an hour before it dried out enough to work… but i didn't watch it much (still don't watch TV much!)

                  Neil

                  #459216
                  john barnes 4
                  Participant
                    @johnbarnes4

                    For those of you who are interested the link provided by mgnbuk is for a 1.5kw VFD mine is a .75kw. Mine does not have the cooling fans but other than that appears almost identical. Martin and Dave both expressed concern about the motor getting too hot. I ran the motor today at 50hz for 20 mins. and it remained completely cool. Just to test it for tripping I increased it to 85hz and it was ok. John.

                    #459228
                    Martin of Wick
                    Participant
                      @martinofwick

                      Sounds good John, Check the back of the VFD too. There is a thermal trip parameter. I think the default may be 85c, you may want to reduce that by 15 to 20c to protect the unit if it runs hot (there is also the possibility of fitting a fan).

                      The display current and voltage could be anywhere in the VFD, on the DC bus for example, so would treat them as indicative readings but always best to check the equipment.

                      Just all part of the fun from those whacky xsy guys!

                      #459240
                      john barnes 4
                      Participant
                        @johnbarnes4

                        That sounds like good advice Martin. I did not think to check the VFD. I am sure I have seen a thermal overload setting of 80 degrees in the parameters. I will check it out tomorrow. John.

                        #459258
                        SillyOldDuffer
                        Moderator
                          @sillyoldduffer
                          Posted by john barnes 4 on 23/03/2020 22:16:24:

                          Martin and Dave both expressed concern about the motor getting too hot. I ran the motor today at 50hz for 20 mins. and it remained completely cool…

                          Excellent news! It means the current reported by the VFD is misleading. Understanding the Manual on these beasts is hard, so it may be displaying peak amps or one of the trip settings rather than average input or output amps.

                          But the acid test is motor temperature; the motor and VFD should both be good if the motor runs cool off-load as it should. I'd carry on on the assumption all is well but watch for trouble again when cutting. If anything amiss occurs ask again!

                          Good luck,

                          Dave

                          #459396
                          old mart
                          Participant
                            @oldmart

                            Dead right about the difficulty of understanding the manual. They are intended for electrical engineers, not the man in the street. Serves you right if you cannot understand it, that comes from being more interested in the cheap price than actually doing your homework first. I did my homework and didn't have to ask how to install the vfd I chose.

                            #459404
                            Emgee
                            Participant
                              @emgee

                              Check this video at 10mins in, goes through the manual setting numbers. Looks like the VFD being discussed.

                              **LINK**

                              Emgee

                              #459418
                              john barnes 4
                              Participant
                                @johnbarnes4

                                Good find Emgee. I wish mine had been as easy as that to set up. John.

                                #459420
                                Martin of Wick
                                Participant
                                  @martinofwick

                                  The problem with the XSY manual is its extreme brevity! In truth there is not a lot of adjustable features anyway, just the basics that are fairly straightforward as below.

                                  Users must have regard to the VF slope – default is OK for most AC workshop motors

                                  Ramp rate settings are self evident defaults are ok to start

                                  Torque control is a percent setting

                                  slowdown/braking setup straightforward

                                  Overcurrent setting simple

                                  The issues with VI keypad display I now believe to be due to issue of VFD pulsed output. I put my new clamp-on meter on a phase to the motor and it was in pretty good agreement with the VFD keypad.

                                  Unfortunately the clamp-on meter has no low pass filtering so gives erroneous VI on non sine wave form, which suggest the keypad monitor also struggles to provide a RMS output of VI. Would need to find someone with a scope or a fluke analyser to do more investigation.

                                  #459762
                                  Lynne
                                  Participant
                                    @lynne

                                    I have recently invested in a VFD for my mill, I've been following much of the thread with interest. I now know, that having had a few problems, it must stem from not having sat, and RTM what ever that is; applied logic, though I think that a knowledge of the subject helps the application of logic, and it is certainly not 'pretty simple'. It seems from 'Old Mart's'. assessment, that my not being an electrical engineer, I am not going to understand the manual, and it serves me right. Do the homework and you will not need to ask how to install it. Right. Andrew summed it up very succinctly 'VFD's are pretty straight forward, but you do need a fair degree of 'knowledge' to set one up, and to understand manuals. I am now reluctant to ask a question. Regards, Lynne

                                    #459779
                                    not done it yet
                                    Participant
                                      @notdoneityet

                                      RTFM, I expect, means Read The Manual. 🙂

                                      No problem in asking questions but unless you are expecting replies of ‘press button ‘a’ enter number ‘b’ and press key ‘c’, etc’ from an actual user of your machine (or someone who understands the programming for that inverter) you would be best served by trying to RTFM (possibly several times) perhaps highlighting the parts that apply to your anticipated usage. Also make sure you disable any potential conflicting settings which may override those you need.

                                      In the case of one inverter, I needed to choose an option to avoid it thinking I intended to use the 400Hz end of the frequency range (It initially tried to ramp up to possibly 5000+ rpm even though I had set it to a maximum of 80Hz). Manuals often look very similar – but if they are not identical they may not be appropriate to your model or even a different version of that same model number.

                                      As suggested earlier (more than once) – if you are not confident of sorting it, buy from a reliable UK supplier who will give you after-sales help. Clearly it tends to cost more but do remember that the advice from a forum may only be worth what you paid for it!

                                      #459780
                                      Martin of Wick
                                      Participant
                                        @martinofwick
                                        Posted by Lynne on 26/03/2020 10:32:13:

                                        I am now reluctant to ask a question. Regards, Lynne

                                        Why?

                                        I thought that is what this forum is for. There is no guarantee that your problem can be resolved but it doesn't cost to ask.

                                        Published technical guidance can be pretty obscure when you come across it for the first time, but it is usually the case that the key functions can be explained in a more helpful way.

                                        #459806
                                        SillyOldDuffer
                                        Moderator
                                          @sillyoldduffer
                                          Posted by Lynne on 26/03/2020 10:32:13:

                                          … I am now reluctant to ask a question. Regards, Lynne

                                          Never be reluctant to ask a question! Even if the unhelpful answer is 'Read the Flipping Manual' or 'Google it'.

                                          Seems to me many modern VFD's come pre-set with sensible defaults and plugging it in might 'just work'. Gets complicated if something a bit unusual is wanted like running a motor faster than 50Hz.

                                          VFD manuals are often aimed at professional installers. They're almost certainly electricians who've done a training course or two rather than full-blown electrical engineers or geniuses. The training puts the manual in context as a memory aid rather than a set of instructions.

                                          VFD Manuals can be difficult. Those for professional units are often particularly terse, and some of the simpler consumer manuals trying to be helpful are lost in translation.

                                          There's no shame in asking for help. If it unblocks the drain you've won!

                                          Dave

                                          #459809
                                          Neil Wyatt
                                          Moderator
                                            @neilwyatt
                                            Posted by Lynne on 26/03/2020 10:32:13:

                                            I have recently invested in a VFD for my mill, I've been following much of the thread with interest. I now know, that having had a few problems, it must stem from not having sat, and RTM what ever that is; applied logic, though I think that a knowledge of the subject helps the application of logic, and it is certainly not 'pretty simple'. It seems from 'Old Mart's'. assessment, that my not being an electrical engineer, I am not going to understand the manual, and it serves me right. Do the homework and you will not need to ask how to install it. Right. Andrew summed it up very succinctly 'VFD's are pretty straight forward, but you do need a fair degree of 'knowledge' to set one up, and to understand manuals. I am now reluctant to ask a question. Regards, Lynne

                                            If you are unsure, consider going to Transwave, they sell sets of matched motor, VFD and pendant ready set up.

                                            I bought a motor and VFD off them and made my own pendant. They supplied a very clear guide.

                                            I did delve into the inverter's more sophisticated side when I made a full control box, but this is NOT essential to success.

                                            Neil

                                            #459876
                                            old mart
                                            Participant
                                              @oldmart

                                              When I was thinking about getting a new motor and vfd for the Tom Senior, I read the numerous threads on this and the Home Shop Machinist forums regarding setting up of vfd's. It was obvious to me that a novice like me was unlikely to understand the advice given by experts however well meaning they are hoping to be. I couldn't understand the explanations. As soon as I saw the quick start guides on the Inverter Drive Supermarket with the step by step wiring and programming in a format I could understand, it was a no brainer. There are several firms selling pre made kits which bypass most of the problems, but they were well past my budget.

                                              #459895
                                              Anonymous
                                                Posted by old mart on 26/03/2020 15:49:36:
                                                …. a novice like me was unlikely to understand the advice given by experts however well meaning they are hoping to be.

                                                The trouble with experts is that one needs to already be an expert to work out who is an expert and who is merely an ex-spurt. smile

                                                Andrew

                                                #461768
                                                John Rutzen
                                                Participant
                                                  @johnrutzen76569

                                                  Hello Joseph noci, thank you for your post which is very helpful. I am setting up a 0.45kw at1 vfd and would like to ask about some of the settings please. P0 to P10 . P2 is 35 volts, what should I set this at? The motor is a 0.25kw 3phase delta connected.P4 is 4hz, again what should this be? P34 is 10hz, should I change this? P78 is at 9000ma which is way high, It takes about 15 minutes of holding the button down to reduce it to 1400. [ rated current plus 20%] I've done this but I would like to know if I have to reduce P79 through P83 as well. They are all 9000ma. Thank you! John

                                                  #461786
                                                  Martin of Wick
                                                  Participant
                                                    @martinofwick

                                                    John, check carefully, is it one of these? If not, you will need to post the relevant part of your manual.

                                                    **LINK**

                                                    If so set P1 to P11 as per listed defaults for your voltage system (220v, I assume)

                                                    If P78 is listed as Main current overload on your instructions, set as 2000 for 1/3Hp motor to start with.

                                                    You do not need to repeat this for P79 to P85 unless you intend to use pre set operating conditions selected by a rotary switch.

                                                    P34 Main Rising Velocity can be set to your desired ramp start speed. At 10 Hz/s, run up to full speed at 50Hz will be about 5 secs (i.e. 50/10). For example, if you changed it to 25, run up to full speed will take about 2 sec.

                                                    Find a youtube video on how to use the shift key to rapidly select the digits you want to change rapidly with the arrow keys.

                                                    #461798
                                                    John Rutzen
                                                    Participant
                                                      @johnrutzen76569

                                                      Thanks, I'll set those as you suggest. It does run ok, I've set all the current maximums to 1400ma, I found how to use the shift key to set things quickly. I've got P34 set at 10Hz/s and it is fine. It is for a drilling machine so i don't anticipate high loadings. I tend to use little drills, if I want to drill a big hole in steel I can still use the pulleys to change the speed.

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