VFD's have an impact on the motor and many people consider this however the impact on the distribution system is often neglected which is concerning considering the trends to install VFDs on larger motors in industry. Micah, There are plenty of generic import VFD… Given the nice tight Vgsth spec of the original, and that it costs power to overdrive a gate, they're unlikely to be deliberately driving more than (say) 15v into it, but the 30v spec on max may mean that they are more lazy on overshoots, so it would be worth measuring. I had an oil filled motor start capacitor blow once. Use MathJax to format equations. VFD Fault / Trip ... Start up problem or has VFD been running for some period? Anti-aliasing of red text on white background What happens if … Reactions: Nutfarmer. And so forth. # Electrolytic capacitors fail due to leakage or vaporization of the electrolyte inside. Quel que soit son niveau et sa pratique, c'est vraiment un sport qui rend happy. mine blew up and I don't want to spend 700+ bucks at Powermatic Thanks Last edited by a moderator: Feb 18, 2021. Incidentally, the silicone pads used in some of these low end products are quite inferior thermally. When you pull a faulty pump megger the cable as it comes up and watch for changes also after you get the cable out string it out on the ground and clean it with a towel and inspect every inch and megger wire to wire. They purchased a spare in case they had a problem with the one in service and needed a quick change out. VFD IGBT blew up and I can't find a replacement part, electrically connected to the exposed pad, Level Up: Mastering Python with statistics – part 3, Podcast 317: Chatting with Google’s DeepMind about the future of AI, Visual design changes to the review queues, 2021 Moderator Election Q&A - Questionnaire, I too want to wire a 3 phase motor to a VFD. How strong is a chain link? Mike Johnson. Stack Exchange network consists of 176 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy. Many/most VFDs have a couple of BIG capacitors in them...and they blow up and take out the main power transistors. Clean up dirt, dust and corrosion build up on the heatsink of the drive. Registered. Standards and Specifications 7 1. This buildup is probably the number one cause of VFD failure! 17 posts 1; 2; Next; SteveHGraham Posts: 7788 Joined: Sun Jan 18, 2009 12:55 am Location: Florida. Lloyd E. Sponenburgh: 6/24/16 2:37 PM: Dang! 4. megger the … Why does JetBlue have aircraft registered in Germany? How about half a chain link? Interviewer did not warn it was a panel interview. You've just removed to electrical insulation pads. Consider setting the switching frequency to the lowest value, although that may cause the motor to operate at a higher temperature. Can I run a 50Hz motor on 60Hz power supply? How can I have a villain restrain PCs in an "intelligent" way without killing or disabling some or all of them? Is this actually done? Possibly the VFD explosion went through the 485 adapter and zapped that USB port? In a VFD driving an induction motor the diode carries a significant portion of the current because of the reactive component of the motor current. Substitution of stressed parts such as these involves quite a few considerations, and we don't know what the drive circuitry looks like so an exact replacement is safer. I made one 10 years ago for my saw after the VFD I had on it blew up. Can VFD be used with induction motor for regeneration? I remove them and apply some thermal paste. The motor is completely fine running from a straight 3-phase line. -- Sebastian Kuzminsky Re: [BHS Public] shopbot status : Paul Sobczak: 12/14/16 9:01 AM: That is interesting, to get a 0x00 … Within seconds, they heard a bang in the cabinet and lost power. If you want to increase the lifespan of your VFDs install a good line reactor on the incoming power supply. Results 1 to 11 of 11 Thread: It blew up. All 3 motor leads must be run together. Viewed 529 times 0 \$\begingroup\$ So here’s my situation, a few weeks ago I received a 2.2kW variable frequency drive from a chinese seller and it worked perfectly. The disconnect switch … How to test the lifespan of electrical components? And it’s not the actual dirt itself. You would need to buy a VFD with about twice the rated output capacity if you were running a three-phase input VFD on … Right in the middle of a five-hour job, and the VFD on our bed router upchucked! The second VFD sat on the shelf for almost 4 years. I'm guessing you blew up your VFD. They performed their maintenance. Is there a setting in the drive … This VFD blew up. Moderators: Harold_V, websterz, GlennW. Showing 1-52 of 52 messages. You can't see or replace any individual components in the IPM, nor is it worth messing with because the replacements cost more than an entire new drive. Darned VFD blew up today! site design / logo © 2021 Stack Exchange Inc; user contributions licensed under cc by-sa. When VFD goes down, remember to check the basics (the controller display, connections, and temperatures), check the motor, and check the drive to get some clue which part of the drive went wrong. This means the replacement part could dissipate 50% more power than the original. Traductions en contexte de "blew up" en anglais-français avec Reverso Context : blew himself up, just blew up, blew it up Teenager on Mars, in conflict with authority, learns truth of Martian lifecycle. S:Oakland VFD M: E ST - MT LAKE PARK - GAS LEAK INSIDE - - GAS LEAK - ER43 TK44 E23 2101539 09:57. Why do I need SPF? I would be concerned that the diode junction to case thermal resistance is 2.0 deg C/W for the Fairchild device vs. 0.85 for the original device. VFD’s and DC Bus technology was invented to solve a specific problem when it comes to AC motor control. I think you are using the drum switch between the VFD and the motor, and that is a HUGE NEVER DO for a VFD. Topics include, Machine Tools & Tooling, Precision Measuring, Materials and their Properties, Electrical discussions related to machine tools, setups, fixtures and jigs and other general discussion related to amateur machining. Is hastily writing down the professor's lecture a good way of learning? With the same drive it will switch slower, which echoes the switching loss comparison. I'm guessing you blew up your VFD. Trying to improve the life of a product by tinkering with the design is never a good idea. VFD IGBT blew up and I can't find a replacement part. Most VFD controllers include an interface to set up the drive for operation and to display information about its operation, once it's underway. I then watched a video on youtube by AvE where he takes one apart (not the same model). Modify GoHz Single Phase 240v Converter to Split Phase 120v/240v, 3 Phase Motor Running on Single Phase Power Supply, GoHz 30-60kVA 3-phase Frequency Converter Troubleshooting. In the past before VFD inverter technology was invented, DC motors were used when specific control of a motor was necessary. Joined Feb 14, 2020 Messages 118. … If the VFD has been operating successfully, but suddenly fails to start, or if the drive starts but does not run properly, check to see if the diagnostics status display indicates a fault. Use diagnostics or a keypad control to monitor variables such as incoming voltage, dc bus, … Blew up my VFD. Make sure the space where it is operated is well ventilated. Le VTT, c'est un vrai parcours de vie pour nous (moi et ma belle). 3. The original part has a single cycle switching loss of 3.5mJ, compared to 5.06mJ in the replacement. DARN! Author Topic: VFD blew up! It was on this very day, 15 years ago, that an extremely serious event took place in the history of Italy, and the history of Europe: Giovanni Falcone, the high-level judge, was assassinated by the mafia in a horrific manner, when they blew up the section of the motorway between the airport and the city of Palermo. What I think happened was when someone replaced it, rather than putting it back in its holder, they duct taped it to the side of the squirrel cage motor that it was starting. How to measure output voltage and current of a VFD? There are two important areas not included in this article: harmonics and overvoltage … They noticed a bit of oil on the floor but didn't think anything of it. Asking for help, clarification, or responding to other answers. This spec sweeps up a whole bunch of assumptions, but they are taken for the same set of conditions, so are a fair comparison. From the OP, it seems that the drive didn't have any heatsink compound. 1,510 Posts #3 • Oct 2, 2013. when you reconnect it to 220v does the vfd was ok even if it has make … Micah Tindell, May 4, 2020 #26. And that advice you saw on Youtube? Here's the VFD running on my belt … I then watched a video on youtube by AvE where he takes one apart (not the same … So I take mine apart to apply good thermal paste to it. Are holographic wills really routinely thrown out by probate courts? If you use a good VFD you can program use it to ramp up to 60 on start up and ramp down on shut off, especially if its a really deep well. 1. Copyright © 2021 GoHz.com. CNC Jedi; Posts: 8380; VFD blew up! When they went to turn it back on....bang. At the moment I think that's stupid because they do not have as good thermal conductivity as thermal paste. It would be better however to continue the search for a replacement with lower, rather than higher, losses. With an TO-247 one of the pins is. The Advantages of Variable Speed Drive Air Compressors. Up to that point AC motors were only used with … Mainly this means “gunk” made up of dust combined with typical plant air which usually contains oil, moisture, and metallic particles. Check input current in each leg, as this verifies the rectifier. However, I don't want to get your hopes up- what you did was quite traumatic to the unit and other things may be blown up, starting with the power supply and maybe the driver parts, You may wish to purchase a new VFD and attempt the repair for a spare. When I set up … Joined: Jul 26, 2016 Messages: 1,939 Location (City & State): Nebraska. This is the closest one I could find on Ebay but the gate-emitter voltage is +- 20V instead of the +- 30V mine is rated for so I’m not sure if it will work. Usually the gate drive voltage is nominally 15V or so, but transients may be greater so the gate rating might or might not be okay. VFD manufacturers in that size range switched to using what are called IPMs (Intelligent Power modules) that house all 6 diodes and 7 IGBTs along with the firing circuits all in one potted device about the size of a credit card. Two were 7300N-3's and one is a 7300C-V. One N3 was faulty straight out of the box. rev 2021.3.1.38676, The best answers are voted up and rise to the top, Electrical Engineering Stack Exchange works best with JavaScript enabled, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site, Learn more about Stack Overflow the company, Learn more about hiring developers or posting ads with us. Note the original has an integrated gate resistor, so you would be well recommended to add one of those to tame things. Description of Terminal Block … And the question has already been asked but, Testing an induction motor with a VFD, difference in voltage and mechanical power vs electric power, EMI shielding for VFD and DC PSU's for CNC controller. During the Operation 6 III. VFD as general use inverter. He just said to add the thermal grease? Variable Frequency Drive with AC motor, 30kW. AvE is a good guy. If I were to store gold for an Internet-less dystopian future, what form should it have? So that means yours is either old stock that was sold as new, which likely explains why you can't find the part, or a very poor design knock-off of a discarded technology. It will help some But you need to know how to test a fuse to determine if its good or bad. Again its not rocket science just follow some simple procedures and you can find out for sure if its good or bad. They started the motor up and walked away. To learn more, see our tips on writing great answers. If a high voltage greater than rated is applied across capacitor, its dielectric strength will break down and eventually capacitor will explode. For any electronic product, the best way to improve the life is to try to keep the internal temperature as low as possible. 0. Top Reasons for VFD Failure and Tips to Identify and Prevent Costly Problems: 1) Buildup. Static phase converters are simple to build. Storage and Installation 10 1. This will eliminate incoming spikes from the utility which damage VFD components. Particular Specifications 7 2. Your best bet if you're not planning on visiting soon is to ask the manufacturer or seller to send you some. Ask Question Asked 3 years, 2 months ago. Is Moffat's translation of John 1:1 representative of the original? Power rating should also be similar or higher, under the same conditions. Installation Site and Environment 10 3. He didn't tell you to remove the pads, though, did he? Then check all wiring … The gate charge is higher at 200nC rather than 130nC, which means it would need to be driven harder. General Specifications 8 IV. Termination of SY cable shield at VFD and 3 phase motor? Does anyone have any suggestions or can provide any help? That likely meant moisture...two problems that are not good for capacitors. It just makes sense to adjust the ramp speed of a load to as long as possible to reduce all kinds of stresses; both mechanical and electrical. In fact..I have a decent sized box Could anybody help me with further info on replacing the VFD with the original delta? The thermal resistance junction to case is only 10% less, so the junction is likely to get significantly hotter. He says that if you want to increase the lifespan on your VFD you should check so there is thermal paste on everything that is in contact with the heatsink. You always hard wire the VFD to the motor. Electrical Engineering Stack Exchange is a question and answer site for electronics and electrical engineering professionals, students, and enthusiasts. Transformers, Phase Converters and VFD; It blew up; Likes: 0. Maybe the seller can throw the parts into the VFD package so shipping is free. 1. They blew up some trenches and, if I remember correctly, some Prime Minister from London got up one morning to listen to the mines being blown up. It appeared that there was a bit of corrosion present in the input filter capacitor bank. Active 2 years, 11 months ago. I'm not an electrician nor have much experience working with IGBT’s. Within seconds, they heard a bang in the cabinet and lost power. What are the limits of the Commerce Clause? collectionscanada.gc.ca I ls ont fait sauté que lq ues tranchées et, si je m' en s ouviens bien, un premier ministre londonien s'est levé un matin pour éco ut er les mi ne s qui explosaient. And it should have error'd out on this. They can buy them cheaply and will have them in hand in few days, getting them to you will be harder. Should these fueses be blowing on extreme overload? How can a transistor amplify current in a circuit? I take it apart again to see that one of the IGBT’s has blown open. One day, they needed to change the VFD. This can be caused due to heating in operation. As you have a broken VFD, and the replacement costs only a few pounds, it might be worth risking it, perhaps with careful monitoring of the conditions when you next apply power. > > >Martin VFD design has some strengths and some weaknesses. 5) Can I run a 50Hz motor on 60Hz power supply? 1) … The instruction manual for the VFD should have a description of faults and troubleshooting steps. Although the information displayed varies, most controllers tell you about high current (usually including blown fuses and overload trips), high and low voltages on the input and output sides, high temperatures, internal faults, and … During the Power-up 6 3. It appeared that there was a bit of corrosion present in the input … • Motor ramping up in speed or only when approaching full speed Motor cables together or smoking insulation? The motor was a continuous duty motor so it wasn't turned off for a long time. Balanced input and output voltage? Maybe it also zapped the RX circuitry in the adapter itself? Does DKIM alone not solve the spam issue? VFD IGBT blew up and I can't find a replacement part. 1) Modify GoHz Single Phase 240v Converter to Split Phase 120v/240v, 2) 3 Phase Motor Running on Single Phase Power Supply, 4) GoHz 30-60kVA 3-phase Frequency Converter Troubleshooting. Crews arrived to find a malfunctioned pressure relief valve and a water line that blew apart from the high pressure of the boiler system. I also belive that the NEC requires fuses protecting VFD's to be rated at 125% of VFD, in which case I would think that 20A fuses should be more than adequate for this drive, but maybe I'm wrong. Dec 21, 2020 #19 Well I knew I couldn't sleep unless I tested it on a different motor. In between the IGBT’s and the heatsink there are thermal pads (the thermally conductive rubber ones), rather than thermal paste. Wonder if preventive measures could have saved this drive? Be careful about mounting it in another enclosure, in a confined space or in direct sunlight. The second VFD sat on the shelf for almost 4 years. Oakland and Deer Park crews responded for what was reported as a natural gas leak inside a residence. When operating at lower speeds (and when properly sized), a VSD compressor is much more efficient and uses less energy. Main Circuit Wiring Schematic Diagram 11 2. Darned VFD blew up today! (if this does not follow the format of a good question I guess it could be rephrased as “What are the important things to consider when replacing IGBT’s?”). It just trashes $30 worth of fuses every time it is connected. Worthless drivel... You should be unlikely to fall foul of the max gate voltage. DARN! All rights reserved. The other one blew up for no reason at all today. So here’s my situation, a few weeks ago I received a 2.2kW variable frequency drive from a chinese seller and it worked perfectly. Braking Methods of Induction Motor in VFD. In an application it is sometimes necessary to control the direction and speed of a motor. As demand increases, it can operate anywhere between its minimum up to to its maximum 100HP. Serious Injury or death can occur if safety measures are not taken into consideration when dealing with VFD operation or repair. >VFD's yet. 1. Check output currents in each leg to verify the motor. The best way to start troubleshooting the VFD is by doing a thorough visual inspection. (Read 5409 times) lloydsp. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. My guess was the oil mentioned in the notes was from inside the capacitor. My guess is that the IGBT’s weren’t supposed to have electrical contact with the heatsink… Now I'm trying to find a replacement part but I can't find one with the exact same specs as the broken one. Even if there was no corrosion, that VFD should have sat at ambient temperature in a non-saturated humidity environment for 24 hours to give any condensation a chance to evaporate before using the VFD.Taking a holistic approach to the installation of VFD is critical and is often neglected due to inexperience. They took the spare out of storage, installed it, closed up the cabinet and turned it on. Also look for special features such as integral co-packaged diode, short-circuit rating and so on. These VFDs generally only run on single-phase input, if you had three phase power, you would only hook up two hots to the VFD instead of three. You think adding heatsink compound is worthless drivel? One day, they needed to change the VFD. Switching while running causes huge voltage spikes, these exceed the transistor break down voltage. It likely overheated, expanded, cracked the capacitor case and leaked out.Another anecdote, I was talking with a colleague who purchased a variable frequency drive (VFD). This just gets me Over the last few years, I have purchased three Teco vfd's. How has Hell been described in the Vedas and Upanishads? Thanks for contributing an answer to Electrical Engineering Stack Exchange! What wasn't done was a visual inspection of the capacitors. Blew up … I hear a pop and then see an error message on the display. Mega2560 master on RS485 bus stops communicating with VFD when I add another RS485 module, Miscalculating the nominal power using nominal current and voltage of a VFD. Installation and Direction 10 V. Wiring 12 1. You might get away with it. In the general question, if you pick an IGBT with at least as high voltage rating, at least as high current rating and similar gate charge (and package) you will probably be okay. How many times do you roll damage for Chain Lighting? C. Ceej0103 Registered. > >Now if the VFD is turned on with the motor disconnected, there might be >another issue. This is just my opinion, but if this was a new inverter rated 2.2kW and it is using discrete IGBTs, that is a design that has not been used in mass production for a decade or so. More debugging is needed here, and possibly a new USB-to-RS485 adapter. Do the world-renown classical musicians ever seriously modify their compositions after their works got published by publishers? Hot Network Questions What is this strange sea creature we found on the beach? They took the spare out of storage, installed it, closed up the cabinet and turned it on. I blew up my huanyang vfd and I am presently looking at a wj200 so I wanted to run something by you guys before buying. Once I have screwed it back together again, I plug it into the wall and press the start button without having any load on it. Making statements based on opinion; back them up with references or personal experience. 6) Wiring a VFD to control single phase motor speeds, 7) Difference between 50Hz and 60Hz frequency, 8) Impact of 60Hz (50Hz) motor being used on 50Hz (60Hz) power supply. Having started up hundreds of drive applications over the years, I still can't understand why folks need to ramp up these large loads in 10 sec or faster. It only takes a minute to sign up. I assume some metalic dust got inside the VFD even though I have been very careful about keeping it clean and away from any sparks. I was looking at the driver for the wj200 and I noticed that the default setting within the driver for the modbus is: /* modbus connection settings*/ char *device = "/dev/ttyS0"; wj200 driver Now by comparison I found this interesting. Show Printable Version; 08-22-2006, 10:19 PM #1. rvannatta. One day, someone shut it off to do some servicing. Storage 10 2. Thread Tools. If you decide to try the Fairchild device, you should probably set the VFD switching frequency to the lowest value. This is the one that was installed on the VFD and blew up. The manufactures of fuses are making blown fuse indicators in them to help you find one that is bad. Whether the original has enough margin to soak this up without complaint ... ? A VSD air compressor is able to adjust the amount of power used in response to … What wasn't done was a visual inspection of the capacitors. Wiring a VFD to control single phase motor speeds, Difference between 50Hz and 60Hz frequency, Impact of 60Hz (50Hz) motor being used on 50Hz (60Hz) power supply, purchased a variable frequency drive (VFD). This part is cheap and reasonably common in China. You may have been doing this for a long time, but I'm believing this finally failed. Darn... $1100 for a new one. VFD blew up is no longer good. Before the Power-up 5 2. Can fundamental analysis be applied to market indexes as if they were single stocks/bonds? I would think that the VFD itself should trip in such an instance rather than blowing these fuses? And unfortunately, this stupid router's control is tightly knit into some proprietary 'uniqueness' of this one brand (Delta)... so I can't just easily … I would like to add that the capacitors blowing up on YouTube are not 400V nor are they thousands of Micro-farads so the magnitude is like comparing a BB to a Cannonball. Some packages have overmolding so you don't need the silicone pads (but thermal paste is mandatory for good thermal performance). MathJax reference.