I should say that C1,C2,C3 rated voltage are 100V. which schematic sir,i am still confuagused? Lower Motor Control Board Controller 8130201 MEG4LF-1E Works W Life-Fitness F3 Treadmill. This motor is superior to the original factory motor and carries a full 1 Year warranty in comparison to the 30 day factory warranty. What type of transistors would I use for T2-T5? I used a light bulb as a load, because the motor is a very risky try. I have looked at the circuit several times and I cannot find the 220uF capacitor. Thanks for this fantastic circuit diagram. BJTs are easier to handle than mosfets, so it's better to use BJTs here. Should I use some bigger capacitor (the original board had a 470uF/400V one). Response must be less that 100,000 characters. I have a problem on the kind of project, i would really appreciate any assistance. At all I intend to use this circuit: 2.bp.blogspot.com/-wJnI3vNWGoo/UoxAV_X6LyI/AAAAAAAAFxU/7NZJ4A2bg88/s1600/treadmill+motor+speed+controller+circuit.png. 2. I am also the founder of the website: https://www.homemade-circuits.com/, where I love sharing my innovative circuit ideas and tutorials. I'm absolutely (120%) that it was correctly assembled. Being a capacitor start motor I would recommend a phase chopper controller circuit as given in the last diagram above, but without the bridge rectifier. Thank you again for your time. Yes that's right! 90-180V 10A. I built a similar circuit, the triac got hot, after less than 30 sec. The 180V could be achieved through a half wave rectification using a single 6A4 diode and filtered using a 10uF/400V capacitor. Thank you Horacio, if your motor is a 120 VDC then you can use the second circuit, however you will to replace the indicated MOSFET with a MOSFET rated at 200 V drain/source capacity. If you run at home or in a gym keep going and progress, walk or run that little bit further every week then you'll be … I think it's time to show you my circuit under which I created the board. thank you, which circuit are you referring too…? $17.46 #22. 2) What are C1 and C2 voltage rates? Is this possible and which way is the best? Would you provide such circuit, mr. Majumdar? I have too a motor driver (MD10-POT) is able to control the speed and direction of your DC motor without using a microcontroller or writing a single line of programming code. 30 product ratings - MC2100LT 12 Treadmill Motor Speed Control GoldsGym ProForm Sears 266118 264597. Hello, mr Majumdar, I have something much simplier in view with respect to 180V DC treadmill motor control powered from 220V AC grid. Hi Mr. Ivan, The first circuit has been tested by me not once but many number of times for different applications. I'm trying to fix my treadmill using the dimmer + bridge rectifier option you show at the end. You can eliminate the stage that's connected after pin3 of IC2…..you can directly connect the mosfet gate to pin3 of IC2, then connect the load between the motor +V and the mosfet drain. Sale price $139 50 $139.50 Save $35.50 US$55 extra shipping fee for treadmill controller… I'm new to electronics so please excuse me if these are dumb questions. Thanks Is this possible to use couple of triacs in paralell in order to get higher rated amps? I have been planning to use Arduino UNO, the problem is finding the relevant H-bridge driver since the PWM from the arduino is about 5V. Thanks again for all your help. I replaced the dimmer and have now removed the capacitor. Hi, Could you explain how a constant torque at low speeds is achieved? The motor is the main hub and carries the most weight mechanically. the PWM pot can be appropriately set such that the maximum output never exceeds the 110V DC for the motor. Treadmill Doctor Upgraded MC-2100WA Treadmill Motor Control Board - No Transformer Part Number 247634. Hi Peter, if a capacitor is used the whole idea of PWM control would get mitigated, because adding filter capacitor would cause a constant peak voltage for the motor and stop the PWM function from controlling the motor speed. . The PWM option is also great but compared to the dimmer circuit ity looks much complicated and technically difficult. I think is possible to use a controller for an Ac motor made with triac and diac and then to use a rectifier bridge to feed the motor. i feel more comfortable interacting through my blog…, does cap on schemetic what voltage should they be on? I think I got the idea – the RC group together with BC547 works like a time-delay stage so the voltage change from the pot comes to pin 5 delayed depending on the values of R and C. That's smart! When i disconnect magnetic sensor motor running full speed. The important thing is that whether or not the dimmer concept works and is able to regulate the motor? I've checked the voltage and its varied while turning at the pot only the voltage varies between the 0.8 and 11 volts. Thanks for your time!! You can upgrade it by adding another NPN/PNP to convert it into a Darlington. You can also try a MOSfET instead. I did a search on “(variable, controller, controler) motor” and bid on this one. The mosfet driver is rated, High Side Voltage = 95V, supply voltage = 9.5 V ~ 15 V. yes the mosfet rating will need to be well over 200V, and 20 amps for safe operations. Even Mr.Samuel, the man who gave the request, did he run the circuit? I expected the light intensity to increase linearly as I turn the 10K potentiometer, but the lamp blinks and then stays on. IRF540 mosfet is only 100v, I think. there's no voltage on the bulb, but when slightly opened, 207V are suddenly on it and so on until pot gets on max. Hello Swagatam, thanks for all the information you give us. Hello Swagatam, I am thinking of building the circuit without reverse to control a 120DC treadmill motor with 2.5 HP for which I will use the IRFP250 mosfet. An easy-to-build and cheap solution will be more than a good result for me. Dear Swagatam. when you are not able to troubleshoot a circuit then it's complicated for you. They guy I bought the treadmill from said that Keys replaced his motor controller about a year after he bought it because it had failed. Hi Mr. Majumdar, is it possible for me to reach you through mail please? I have changed the IRF540 mosfet to the IRFP250 mosfet. Could you show us what this circuit would look like without the components necessary for the reverse feature and how I could make this work using 110vac i.e. Kindly correct me about the mentioned circuit about these concerns; 1) I need to convert 220Ac to 180VDc and connect the positive to place indicated as +12VDc in the Circuit ! If you did, then I would suggest you to first confirm the IC2 pin3 output response with an LED. I have also some differences – I need one direction and have 180V DC motor at 2.2HP (that's 1640W of power). Required fields are marked *. And finally, if there's a man on the treadmills belt when the problem occurs, he will fall down, with possible injury. This DIY repair guide explains how to replace the motor controller on a treadmill. KB Electronics 8811001 KBMC-13BV (H9042) Solid State AC Control The other way is to use half-wave rectifier (single diode) and a capacitor behind it in order to get smoothed voltage with the value motor needs. 928 sold. It came with a flywheel that weighed half a ton, so I removed it as it is going to replace an old AC 3/4 HP single phase, capacitor start. Last Updated on April 25, 2020 by Swagatam 269 Comments. If the requirement is above 30 amps mosfets could be preferred…mosfets require stricter parameters while configuring compared to BJTs therefore sometimes become difficult to handle.however in the above design mosfets could be used since the configuration does not demand a high side driver due to the involvement of both n/p mosftes.. Treadmill motor control board MKS TMPB15-P circuit board use to motor speed control Sale price $139 50 $139.50 Regular price $175 00 $175.00 Save $35.50 US$55 extra shipping fee for treadmill controller Like is 1 actually 1 and not some other pin? you can rather try the following circuit which is relatively simpler and will be suitable for your application: But the other diagram also includes a 12 volts dc motor and on my lathe is a 220 volt dc motor. Discover over 738 of our best selection of Ranking Keywords on AliExpress.com with top-selling Ranking Keywords brands. New, unused, with manual. Pinout matching of the two ICs is not important, you just have to use the 4049 gates in the appropriate locations as indicated in the diagram, you can refer to the datasheet of the 4049 IC for learning the details. what are the transistors T1 to T4 should i use? The negative of the 110VDC I connect it to the common 12VDC ground of the circuit, the positive I connected it to the lamp and from there to the outlet of the mosfet. Are 100V enough for Q1 in my case?How about C3 (the reservoir capacitor) from the link? Google 'treadmill dc motor speed control'. A little research yielded a cheap solution -- a treadmill motor. OK, no problem….then you can go with the first PWM based concept, let me know if you have problems while making it…. That's exactly what I meaned mentioning using MOC series chip, at least it combines the advantages of both circuits, presented here. Some have large, touchscreen displays, though this is typically reserved for models exceeding £1,000. 300ma AC and output: 12v 1a DC.. Eliminate everything that’s connected to the pin3 of IC2. A bad solder won't cause a burning problem according to me, I think the treadmill motor could have exceeded the max amp rating of the BJTs. also the design calls for ICMM74C14 can ic4049 be used intead? 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Hello Mah, you can apply the second last design without any changes, except the MOSFET which must be rated at VDs = 200V and ID = 10 amp. I've a treadmill whose power failed completely...it had been imported from china and it's like they can't help after negotiating with them..guarantee is only meant in their x-try. My motor has the following spec. the word "simple" was mentioned in context to the subject….compared the complexity of the PWM concept this circuit looks easy that's was I meant to say in the article.. What should their values be? Should I use a lower power bridge rectifier? Replace the motor controller with the manufacturer-approved replacement part. Once the triac blowed up and the motor raised its RPM's to the space before the fuse interrupted the mains circuit. Alright I have become more knowledgeable with symbol. Use any 200V NPN transistor, connect its base with pin#3 of IC2 directly. . I ran my 220 and 180 vdc motor by using a 4kw dimmer with bridge rectifier feeding the pwm circuit and worked very well. TWTADE/DC Motor Controller Motor Speed Control 6V-90V 15A 1000W 16KHZ Speed Regulator Module Support PLC Control Speed Controller Dimmer Governor Regulation Output Voltage LED Display + knob. lastly do the uf ratings of the capcitors change with the higher vaoltage needed in my circuit? The positive line of R1—-R5 must be connected with the above 300V DC lien through a 100k resistor and a 12V zener attached across the positive R1—R5 positive and the common ground. Very easy installation. 1. And Im assuming the 100kpot in the open/close door circut will be the knob I turn up and down to speedup/slowdown the motor is that correct. I'm uploading a PCB picture too. example 10uf should it be 100v or 220v or 400v? The X2 mill's DC motor speed controller is the weak link and not the motor itself. A wide variety of treadmill motor controller options are available to you, There are 860 suppliers who sells treadmill motor controller on Alibaba.com, mainly located in Asia. the 220k variable resistor controls the frequency of the soft start PWMs. Mr. Majumdar, I have a similar problem. The old motor was the A.C. capacitor start. If you want the H bridge, then Darlington may not be required. But before I soldered the components I did a test on a breadboard. FREE Shipping by Amazon. Hi Kakooza, if it's a DC motor then you can definitely use the first design which is explained in the above article. Fast & Free shipping on many items! Can I use it again? starting voltage/ current= 130vdc/16.2A cont. So, what are the difference between those pairs? I need a DC Motor Speed Controller for my 2x72 grinder build. sorry it won't work, I seems I missed the amp spec of the device. This will prove whether your IC 555 stages are working correctly or not…, Also, making it over a stripboard through soldering is more reliable than using a breadboard, which may cause loose connections. I think it will be much simpler than the two 555 timers PWM and Darlington stages. 1/2-2HP. ". Or should I be looking at a different approach to driving that big D.C. As long as I can see it will provide directly 180V from the 230V rectified AC grid voltage in the power line. The voltage must show a corresponding 0 to 12V variation, if this does not happen would indicate either a faulty IC or connections. !May God bless you!Chestno12@gmail.com. Thanks again for your prompt responses. the 130vdc thank you. Thanks in advance! This is an amazing site and appreciate the time you dedicate to helping others. i.imgur.com/VP0JdCE.png. NordicTrack EXP1000X Treadmill Motor Control Board Model Number NTTL09610 Part Number 181754. If i replace Q1 for another, could i feed it directly the 220 Volt Dc? Reliable Electric DC-2 Variable Speed Motor Controller. . The above triangle waves is instantly compared by the set potential at pin#5 of IC2 creating an equivalent level of chopped PWM at its pin#3. I just want to make a circuit which can control its speed from zero to maximum. Any advice or suggestions? I will let you know how it goes. I ran my motor on a paid 4kw dimmer with 8A bridge rectifier. Where would the ac come in and where would it be rectified? Alright, let it be so, let's forget about this . The LED brightness must vary from 0 to max in response to the pot variations. the dimmer chopper circuit above can be used as is it, or some components should be changed. But when i start the circuit at zero, i can turn it slowly to max but it won't turn down anymore. The only adjustable component inside is the pot?! Do you think I’m making a mistake? The circuit of the proposed treadmill motor speed controller may be understood with the help of the following points: Here the two 555 ICs are configured as PWM generator/optimizer for acquiring the required speed control of the connected motor. I really don’t know if that is possible and even more I don’t know how to handle the high starting current of the motor. Hi Mah, I referred you the second last design, meaning the second circuit from bottom. Sole D020103 Treadmill Motor Control Board Genuine Original Equipment Manufacturer (OEM) Part. Thanks Ivan, The diameter of the core could be such that it accommodates the 200 turns comfortably, it could be done over an iron bolt or screw…but the diameter of the wire should be more than the indicated 0.6 mm since the motor is rated to carry high currents…a 1.5 mm could be tried initially. Sale price $109 00 $109.00 Save $39 Treadmill motor control board MKS TMPB15-P circuit board use to motor speed control. 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