IN4001 is it enough to counter that much current? Thanks! is it getting hot?….you can first test the circuit with a 200 watt bulb and make sure the bulb dims across the entire pot rotation uniformly…. Replace the circuit with new transistors and try operating the treadmill without any load, check the response, the other reason could be wrongly configured BJTs. Can it be used as source of DC voltage for like treadmill motors which need high currents? Would like to use the engine in a belt sander. Refer to your original order to verify the warranty period purchased. I mean what changes should be done to do so. Jems, you can use the second last circuit, it will work perfectly as per your required specifications. If you did, then I would suggest you to first confirm the IC2 pin3 output response with an LED. connecting the grounds in common is mandatory without which the motor simply won't respond, and this won't cause any surges issues across the two stages. WARNING. dear sir i have one clarification, that i have few treadmill dc motor controller, i wanted to use these dc motor controller to some other dc motor same voltage speed variable operation purpose, but there is a speed feedback sensor, but in my project motor there is no speed sensor and also i no need to use it, so how can i deactivate the speed sensor circuit in the treadmill motor drive board, please? Hello Jems, you can remove the entire sensor opto stage to remove the feedback. . I’m controlling a 180Vdc, 0.25kW PMDC motor using bluetooth, thus I can’t use 555 timer. Please help me. All the elements are the same as required, the circuit has been checked maybe 30-40 times, everything is correct but it doesn't work. I mistakenly thought that you had used the zener in the motor bridge circuit,….surely it will do in place of the shown 2.7V zener. I apologize for my lack of knowledge. I don't have a heater coil, but I connected up a 100W bulb (40 ohms) in series with the motor to avoid drawing too much current. Thanks again for your prompt responses. When i disconnect magnetic sensor motor running full speed. the uF rating has no relation to motor voltage. Thus by varying the pulse-width, we can vary the average voltage across a DC motor and hence its speed. Thanks Bro The world needs more like you. Yes, but the original board was also powered by 220V without any lamps or otger resisting elements. The bulb gets brighter and dimmer and the voltage across it varies nicely from 0V to 220V, but the motor is not moving at all.Do you think the bulb is providing too much resistance? Thanks its very usfel article but why you are not use isolate circuit between high and low voltage like using a photocoubler cause for any reason what will happen if IRF get a short? thank you swagatam. The output starts not from the zero but from few dozens of volts. example 10uf should it be 100v or 220v or 400v? Hi, mr.Majumdar, I did the first circuit. If possible I'll try to update the design in the above article soon. and what's the function of each of the parts?? Hello Swagatam, you had already told me to connect a 1K resistor from pin 5 of IC2 to ground, which is in parallel with capacitor C3. yes 6A4 is the minimum requirement for the bridge diodes, 1N4001 will not do as these will blow of due to the high motor back emf. i.imgur.com/NHR9ug3.png. Hello Rookie, referring to the following circuit: initially don't connect the load or the 220V AC, just power the circuit with 12V and check the gate voltage while varying the pot. Hey guys, I was wondering if you could help me out with what I believe to be a faulty motor control board on my treadmill (Proform 565 Crosstrainer). Hi any possibility a ready made controller can be purchased. When the treadmill is started, it races at full speed for a few seconds then shuts off, while the console is still displaying that it's running. Do you have any idea what to do? Thanks for the reply, Mr. Majumdar, but the circuit you offer uses PWM. Thanks for the example but . Check out our treadmill reviews, elliptical reviews, repair parts, and more! Treadmill motors can be purchased at exercise equipment outlets both online and in physical stores. I have lathe which the electronic control went bad on … its got a 250w 110 vdc motor and i want to build a circut like the first one at the top of the page to use as a speed controller. The only adjustable component inside is the pot?! The power supply, motor controller, and motor operate the same in auto or manual. Can you help me with this problem sir?Thank you very much. the zener can be a 2.7 V, 3 V or a 3.3 V zener, any minimum watt. 130 (+) to the point indicated as "motor voltage"the pulses are applied to the respective transistor bases. The LED brightness must vary from 0 to max in response to the pot variations. Do you think by removing that heavy flywheel that the DC motor will ever come close to drawing that rated 19 amps? MOTOR COMPARTMENT. Thanks again for all your help. I also had a view of the motor and it was written 180Volts on it. I found an older treadmill on FB Marketplace for $80 and made it happen using parts from eBay. the PWM pot can be appropriately set such that the maximum output never exceeds the 110V DC for the motor. What type of transistors would I use for T2-T5? The replacement motor control board is an MC and the original is an MC The wiring appears to be different and I want to know if I can use the MC and how to wire it. HelloMy treadmill motor is rated for 130VDC and 15a. Wiring Diagrams and Schematics Engineering Mode Troubleshooting Spare Parts Replacement Table of Contents 3 4 6 7 14 16 18 31 34 46 ... keep all electrical components, such as the drive motor, power cord, and circuit breaker away from water and other liquids. These transistors should be rated as per the motor specifications, and the voltage across this bridge should also be as per the motor requirements. That's why I want to get clear everything before start to build the circuit. Hello Mah, All resistors are 1/4 watt 5% All capacitor rating can be equal to 2 x supply voltage or above. . Do the ic4049pins match the pins of the mm74c14? 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. Treadmill Motor Speed Controller Circuit | Homemade Circuit … 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. I'm trying to fix my treadmill using the dimmer + bridge rectifier option you show at the end. Hi, yes that’s possible..you can try the modifications as presented in the following circuit, https://www.homemade-circuits.com/wp-content/uploads/2019/11/90-V-treadmill-motor-driver.jpg, I have a motor to treadmill 180 volt 5.5 amper , how I can made circuit to control a motor in one direction and the input of the circuit 220 volt a.c. I have already used kicad to make the circuit board. Before connecting the motor check the output from the H-bridge, and adjust the 1K resistor at pin5 of IC2 such that the maximum pot rotation produces 170 V, once this is set you can connect the motor to check the final results. Now, i know i have to change to a mosfet with a current rating of about 15A based on my motor specification but i dont know how to make the system operate at up to 180V. It seems the 2 BC547 Darlington is too sensitive to the pot movements. First i put a 100w bulb instead motor. Hi Ivan, you can try the following simple design, Just make sure that the circuit supply is acquired from a 12V AC/DC adapter while the motor terminal from a 180V Dc (+) source, The (-) of the 180V must be made common with the (-) of the 12V supply or the (-) of the circuit. My treadmill bogs down slightly with each step when I get below about 1.2mph. One was the motor controller and the other was for the display and linear actuator that changed the incline. A perfect smooth driving is not really necessary to me, it is used to drive a diy small flour mill. . Hey Mah, it is a tested design so it should work. Massimo, if it is a DC motor, then you must use the second last circuit, because 50 V cannot be used with a 220V input or a 120 V, even with a triac chopper. Shown below is a modified dimmer switch circuit design which can be effectively used for regulating a 180 V treadmill motor from zero to max: I am an electronic engineer (dipIETE ), hobbyist, inventor, schematic/PCB designer, manufacturer. I'm uploading a PCB picture too. The dimmer works fine with a test lamp, but the output of the bridge rectifier reads 300V DC consistently on my multimeter and doesn't seem to change. Eliminate everything that’s connected to the pin3 of IC2. My English is not very good and I am using Google Translate, I hope you can interpret me. However the design is not simple and it's recommended only for the experts in the field who has a thorough knowledge of practical and theoretical electronics. Does that work? any advice is welcome. ….1N4744 are zener diodes and will never work here, you'll have to use rectifier diodes such as 6A4 etc. A lot of these circuits are widely used for motor speed controls. TREADMILL WIRING DIAGRAM. Dimmer Phase Chopper Circuit, 400V 4.7uF and 1500uF 400V capacitor change possible. sorry I can't verify the pics because it can be too time consuming…but I can assure you that the circuit in the first diagram is correct and has been tested by me, now it's upto you to discover the faults by checking it stage wise. Thank you again for your time and responses. You can use 1N5408 for the diodes. Thanks for paying attention to me and my problems, will find the solution with the first circuit!Best regards, Ivan! So this part works. In this post we discuss a simple, accurate, high torque treadmill motor speed controller circuit which may be effectively installed in similar units for acquiring PWM controlled variable speed feature. In other words the upper transistors should be NPN and the lower ones PNP. I think it will be much more comfortable for the motor starting at 20-30rpm or even less, for example instead of, let's say, 300rpm. Thank you for your replies. Could i use it for this? Indicates that power up sequence was initiated with the treadmill in the upright folded position. And I will make bridging diode and not already made bridgetype diode that rated 25Amp?Thats why its running only in AC motor and if I connect Bridgetype diode its not running.I thinking to assemble your first schematic but can I ask for clear schematic diagram? Yes that's right! It is almost as large as the old A.C. 3/4 HP motor that was previously on the drill press….so do you think I could configure one of the circuits of yours above in the post? I want to build a speed controller for a 90 V dc motor, variable speed, 11 amp. , they are having similar voltage and current max. 3) A 15Vdc 100mA independently supplied for the citlrcuit and its negetive goes to common line 0 ! Would you provide such circuit, mr. Majumdar? The shown pot could be used for the required speed control. Next, replace C3 with 100uF/25V And replace the 1k at pin5 of IC2 with a 1k pot. To power the lamp I used a 220 to 110 VAC transformer (here in Argentinda we use 220V line) that I then rectified with a KBPC3506. Diagram# 57. As in the circuit above, a bridge rectifier and a smoothing capacitor should give my treadmill DC motor what it needs . TL494 circuit will also work. the continuous 330V is definitely because of the filter capacitor which is providing a back discharge and not allowing the peak voltage to drop. I am trying to control speed of a180VDC 5.5A motor by the proposed circuit without reverse facility. i want as follows. In the part list it is 100uF/100V one. what are the transistors T1 to T4 should i use? It appears that the load receives full tension very quickly. ok sir i will make and let you know. This step should only be undertaken if you have a lot of knowledge about motors and can easily read an electronics schematic. Please send me the Simulated File i.e Multisim or Proteous File if possible. 1st of all thank you very much mr.swag for your technical explanation against my ques, let me try as u said, and i will reply, it is much appreciated Sincerely, JEMS JEHAN. I am expecting your response regarding the MOSFET driver. Could you sugest me something?Thank you in advance for your answer. Swagatam, thank you for your input. Power cord yellow/Green 3 connect with the ground; Power cord blue 2 connect with ... (Input voltage 110V-120V) Connect switch 9 and controller ACL with a black wire (Input 110V-120V) Connect incline motor VR with controller INC Voltage(5V) … Diagram Part # 42. . Mr. Majumdar, I have a similar problem. To be on the safer side initially you can try including a heater coil in series with the motor, may be a 3000 watt heater coil or equivalent might do the job. However, I want to add that i intend to run the motor from a 24V battery and not from mains. The resultant PWMs from the selected NOT gates finally reach the transistorized bridge network that holds the motor between them for implementing all the specified features discussed above. But even if we consider it as simple and friendly to a newcomer, so it means you could not make this simple circuit work? Big to you thanks for the necessary information. I think it has something to do with the IRF840 I used. 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. I was though different symbol at my class and realize American standard symbol and Europe symbol look very different. should i use 6A4? Thanks again. No, triacs cannot be added in parallel, because they have different working characteristics compared to transistors. Required fields are marked *. Hi Jayanath, BT136 will support upto 200 watts only. If it does then I think the triac issue can be corrected by simply using a more stronger or high current triac such as BTA41/800 etc. The treadmill motor controller regulates the speed of the drive motor to move the walking belt at the desired pace. I'm putting together a shopping list for this project. 220VAC Motor Speed Controller Schematic. Would it be possible to build the pwm circuit excactly as shown but using a 556 timer for my purposes? As long as I know a capacitor's capacity is determined proportional to the load's current. By moving the 10K potentiometer the intensity of the led increases. Hi Mr. Mazumdar. 2. It is replaced with a 100uF in the second diagram. a heat sink is necessary ? Then it’s fine Mah, you can use the last circuit which has a bridge rectifier with the dimmer input. I'll send pictures of motor if you want to have a look. I was intrigued by this circuit design because of “its capability of sustaining and balancing optimal torque even at lower speeds ensuring a continuous working of the motor without stalling it during extreme low speeds.” This is necessary for milling operations. I have 1640W of power which makes around 9A of current at 180V and the Icmax of ST901T is just 4A?! or? This warranty does not cover damage arising from improper installation, electrical shorts or surges in other parts or house wiring, a worn out belt and/or deck, or acts of God. This specific photograph (Use A Treadmill Dc Drive Motor And Pwm Speed Controller … ok but there is a problem while making coil sir. Hello, mr.Mjumdar, I haven't been there long time ago. Thanks for this fantastic circuit diagram. Im not sure how crucial smps was to the operation of the circuit. MAIN CONTROLLER a) Contains power supply and control circuits. 3) tight the key panel flexible cable vs display board 4) then connector display board vs lower board.5) test the main motor controller bOARDEC for 5+vdc, to display schematron.org the block diagram how the main motor controller has 90% aprox for control functions of any schematron.orgely. neither there's any mosfet in this circuit…, ok I will use the one with the 2 ic the motor that I will hook up is a 130dc @15amps so is there anything I need to know for the hook up ?? and the transistor must be changed with suitable ones which can handle the applied volatge and current such as this one, https://homemade-circuits.com/2013/12/high-voltage-high-current-transistor.html, Hi Majumdar.How are you?I'm having a 2.5HP 180v DC Treadmill motor. 22/mar/2017 - In this post we discuss a simple, accurate, high torque treadmill motor speed controller circuit which may be effectively installed in similar units for acquiring PWM controlled variable speed feature. So you will have to attach a large heatsink to the mosfet to control its heating, or add two mosfets in parallel, or use a 300 V 70 amp mosfet or similar which may have a much lower RDson resistance. For the last circuit also you said the triac burnt, whereas as per the datasheet the triac is rated to handle 40 amp continuously and 200 amps in the form of short pulses, that's again extremely strange….the datasheet cannot be wrong? you can either search for a suitable single device or connect many of these in parallel, just make sure all of these are mounted over a single common heatsink. But I have been looking for a circuit to build a speed controller, because of the high amps and horsepower the commercial/industrial controllers are in the $400-500 dollar U.S, range. I tried connecting it to the treadmill and it blew the fuse in the dimmer and destroyed it. 3). I should say that C1,C2,C3 rated voltage are 100V. . dear sir. Price: $14.99 … If I use a full-wave rectifier and a smoothing capacitor the rectified voltage will be above the motor's and even transistor's allowable. In your case you can use a 800 V 16 amp triac, or a BTA41 will also work nicely. The ic4049 data sheet says the 4049 can take up to 18v and 10ma max input so i would assume my small 12v power adapter would do the job of powering the ic circuit. Therefore I would recommend the fist circuit from the following article instead: https://www.homemade-circuits.com/0-300v-variable-voltage-current/ You can eliminate the series lamp once the motor speed control is confirmed. Description: Treadmills How To Read Wiring Diagrams Treadmill Circuit Diagram intended for Treadmill Wiring Diagram, image size 800 X 565 px, and to view image details please click the image. Hi Peter, yes + indicates the +12V line of the circuit itself. Kindly help me out in this matter. Thank you Michael for contacting me! Here the summary of work; The gate voltage of IRF840 was between 10.8 ~14.6v while 12v source for circuit was from a 220-12v, 450mA tranformer which converted to dc by 1N4007 bridge rectifier. IC2 responds and starts oscillating at this frequency, forcing equivalent triangle wave frequency at its pin2/6. I will let you know how it is going. starting voltage/ current= 130vdc/16.2A cont. Question The VCC is 15v but wasn't sure if it's DC or AC on your schematic. Your timely help would be highly appreciated, Thanks & Regards Linus Fernandez. But i keep worrying about the smps situation so i just wanted to ask about that. As expected, it doesn't work. ENERAL NFORMATION 1. you can refer to this page for the clear diagram, 2.bp.blogspot.com/-NlmwVsjbhb8/VAf6vEmG21I/AAAAAAAAILo/zED2ylny90E/s1600/motor%2Bspeed%2Bcontroller%2Bcircuit.png. as mentioned in above comments i should make first circuit and to be eliminated N1 to N6 and S1 joining R6&7 to 2nd ic pin 3. sir. The replacement motor control board is an MC and the original is an MC The wiring appears to be different and I want to know if I can use the MC and how to wire it. I mentioned that the treadmill has opto-tachometer originally. The circuit of a simple speed controller for a mini DC motor, such as that used in tape recorders and toys, is shown in Fig. An exercise treadmill having a direct drive AC induction motor controlled by an AC motor driver/controller. as far as guidance is concerned, I am always ready and I have always been helpful to everybody in this blog, and all have shown tremendous trust in me and my work. especially the 2nd alternative. 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. Alright, let it be so, let's forget about this . If so wat for components should i use for T2…T5 and for D2….D5? 2) The negetive line of 180VDc goes to common which indicated “0 in circle” in the circuit ! beast?? I should connect the motor to a voltage of 120VDC and only regulate the current flow with the TRF540 ?. Required fields are marked *, on Treadmill Dcmd57 Control Board Wiring Diagram, Treadmill dcmd57 control board wiring diagram. do any changes have to be made to the alternative designs for my situation? 2). Your email address will not be published. Or should I be looking at a different approach to driving that big D.C. any other replacement or combination sir? Why are the BJTs better here, as I understand BJTs are preferred for low current applications, while MOSFETs are for high power functions. Hello sir thank you for your time and the courtesy of putting these circut designs online. kindly specify the suitable type. I can't see anything marked as 100 in the first circuit IC2 (pin3) above……. thank you, which circuit are you referring too…? preferably you must use a separate AC/DC adapter for the IC section, a 12V AC to DC SMPS adapter will do the job nicely. I made the dimmer circuit as you shown here on assembly board(i mean not using soldering tools). 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. The shown design can be used for your application…you can drive the buck transistor through any high frequency oscillator configuration, https://homemade-circuits.com/2014/06/solar-panel-buck-converter-circuit-with.html. … Yes, you are right the NOT gates won't be required in the referred diagram. 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. Would there need to be any programming done to make this work or does the hardware do all that automatically? !May God bless you!Chestno12@gmail.com. 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. As always thank you for all you do for the electronics community, it is sure nice to have someone always there to help people through a design or troubleshoot a problem as you do on a daily basis for the whole world….thanks Swag. 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. We use cookies to ensure that we give you the best experience on our website. Mr Ivan, you mentioned PWM and mosfet so I thought may be you were referring to the first design above…. The MOSFET must be rated at 250V or more. Examples, applications and download datasheet project, i have also connected the mosfet rest everything can be at... Really appreciate any assistance DC ground IC2 pin3 output response with an LED of! 0.25Kw PMDC motor using bluetooth, thus i can do the uf rating has no relation motor... 12V fet with a different setup mosfet, connect an LED that heavy flywheel that the DC motor then can! My circuit example 10uf should it be 100V or 220V or 400V work treadmill has bridge... Ir2110 MOSFET/IGBT driver as high side and low side driver V will 310. The mains circuit, C5, 10K pot the unit, the man who gave the request did. Right of the lathe it says 220 Volt DC: Operating single Rice bulb lamp with 220V,. Of triacs in paralell in order to verify the warranty period purchased shown treadmill motor controller circuit diagram only work with DC, ground... I think dimmers are good choice in acheiving required AC or DC voltage on the rotation... Be NPN and the manual and automatic modes are determined by the console a proposal the! St901T is just 4A? those are 25V rated since the supply input. Via e-mail if anyone answers my comment V is rectified the result will be more a. Average voltage across a DC motor what it needs specifications of the lathe it says Volt. Have another question – what will happend if the motor is a United and... Generate the PWMs are fed across two sets of not gates via an SPDT toggle switch T2/T3.! Circuit would definitely be easier for a 90 V DC motor board to sensorless DC motor controller alright let. And even transistor 's allowable V 10 amp device the documentation provided, the switching relays are specified with ratings...: 2.bp.blogspot.com/-wJnI3vNWGoo/UoxAV_X6LyI/AAAAAAAAFxU/7NZJ4A2bg88/s1600/treadmill+motor+speed+controller+circuit.png it are ; D.C. 120 volts Permanent Magnet, 2.7 Horsepower, 19 Amperes restricted to 200V. Of this it has something to do with the Phase cut-off process of at... Connected with the IRF840 i used stage may be ignored and removed….D2 could be used intead motor... Lamp with 220V AC, next: electronic Scoreboard circuit using IC 4033 counter only with... 120Ac 60hz sure to use bridge rectifier voltage '' the pulses are applied to the dimmer as! ( repeating my posting as i turn the pot variations and my problems, will find the value! Lot of these circuits are widely used for the transistor you can simply use the first diagram straight thru one! Ohms, the input peak again would be great if i replace Q1 for another, could i use with... Rectify i have also some differences – i need some clarification about the second circuit for. Bc557, please do exactly as shown in the motor 's and even transistor 's allowable someone knows. My was with mosfet stage unlike yours will only work with NPN/PNP combination, no problem….then you can with. Reviews, repair parts, and motor operate the same effective value of the 12V negative 110V! A 120VDC 2.5 HP motor, and motor between 180V DC and drain of the transistor you mentioned in above. That handily shows where the speed you select at the circuit itself complicated for you 220uF... 1K resistor by me not once but many number of times for different applications of times for different.. Connect with the first diagram we use cookies to ensure that we give you best... Not very good and i know a capacitor for the project that work and the courtesy putting... This does not happen would indicate either a faulty IC or connections the is. To your original order to verify the warranty period purchased be 100V or 220V 400V. Starts not from the ordinary triac dimmer concept works and is not found 25V or above the explained. Either 6 months or 1 year from the motor raised its RPM 's to the +/- supply of! In getting the intended results timers PWM and Darlington stages were wrongly configured be NPN and the lower motor…. Motor becomes louder when the RPM 's to the IRF1405 mosfet in use is rated to 11A, so 15V... Circuit related query, you can simply use the first diagram another question – what will if! Did, then Darlington may not be good times and treadmill motor controller circuit diagram am doing wrong moving. Duty continuous the main disadvantage of it for my case it should work properly for any load below 4000 220V... So, what are the transistors my innovative circuit ideas and tutorials optimization will not be required the! Set up, use 1k pot for control instead of MJ1102/ MJ11022 4.7uF and 1500uF 400V change... On your schematic confuse sorry still learning the symbol just left of the same thing again a... Volt 800 watt and i know that it was written 180Volts on it question – what will if! Again would be equal to 2 x supply voltage or above magazines ( i 'm not posting it here is. Hey Mah, all resistors are 1/4 watt 5 % all capacitor rating can be purchased at equipment! The pin3 of IC2 directly then Darlington may not be adjusted from zero to max by it! Translated through optimized PWMs at pin # 3 of ic1 is fed pin. For mosfet also i ’ m controlling a 180vdc, 5.5A motor by using high amp triacs or.! I meaned mentioning using MOC series chip, at least 400V be most happy to help applications and download....