![]() ![]() If the shaft is at the correct angle, then the motor shuts off. This pot allows the control circuitry to monitor the current angle of the servo motor. In the picture above, the pot can be seen on the right side of the circuit board. The servo motor has some control circuits and a potentiometer (a variable resistor, aka pot) connected to the output shaft. One is for power (+5volts), ground, and the white wire is the control wire. You can also see the 3 wires that connect to the outside world. You can see the control circuitry, the motor, a set of gears, and the case. The guts of a servo motor is shown in the following picture. A lightly loaded servo, therefore, does not consume much energy. It also draws power proportional to the mechanical load. A standard servo such as the Futaba S-148 has 42 oz/inches of torque, which is strong for its size. The motors are small, have built-in control circuitry, and are extremely powerful for their size. They are also used in radio-controlled cars, puppets, and of course, robots. In practice, servos are used in radio-controlled airplanes to position control surfaces like the elevators and rudders. If the coded signal changes, the angular position of the shaft changes. As long as the coded signal exists on the input line, the servo will maintain the angular position of the shaft. This shaft can be positioned to specific angular positions by sending the servo a coded signal. 1kW and I recon that the servo will be much more better in changing directions instantly.A Servo Motor is a small device that has an output shaft. Therefore I make a reduction, lowering the speed to 600rpm and increase the torque to 16Nm. On the other hand this servo has 4Nm of torque but even at 2500rpm. 600 rpm, the maximum speed my application needs the torque is approx. Regarding your question, The stepper had a holding torque of 30Nm i.e. I just want to control speed and direction of 1KW motor and be able to change its direction very fast without compromising torque as I have seen in my stepper motor. I do not know if there is something simple for my application. So what I had in mind was something simple, and that is why I chose an Arduino. I must say in the field of electronics and these staff I am really a newbie as I more on the mechanical side. I have found the manual but was unable to upload (as it is too big) but yes the electrical diagrams match the one you have found. Well first of all I would like to thank you for your help. An easy project? Maybe, it all depends on your expe You said your stepper was 30Nm which doesn't pass the smell test, sure you didn't mean 30mNm? What's the frame size?Ĭould you make it work? Yes, with some relays and analog level shifters. An easy project? Maybe, it all depends on your experience level.Įdit: As MarkT mentioned, the servo is rated at 4Nm. ![]() The speed command is +/-10vdc so to answer your question, no, you cannot control this drive directly with an Arduino.Ĭould you make it work? Yes, with some relays and analog level shifters. The rest of the drive I/O is pretty standard at 24vdc. This is all pretty standard on inexpensive, small drives. ![]() You'll also need a braking resistor for rapid stopping or deceleration. I also see input fusing and a line contacter in the power feed so you'd need additional fusing, a typical US thermal-mag breaker probably is too slow for proper protection. The first thing I note is that the drive requires either single or three phase AC power at 220 volts. Examining one of the Aliexpress offerings show a bit more detail: If the question is yes, is there a particular setup of how I can interface the Arduino with the servo drive and simple code where speed in rpm and +/- direction is utilised to control the servo.īased on the model number shown in the Alibaba page, a Google search shows them available in single piece lots on Aliexpess. My question is can I control (speed and direction) of a 1kW servo motor with my Arduino 2560? I saw some examples where small servo motors where controlled by Arduinos by I hardly saw Arduino controlling large Servo motors. What follows is a link to a servo motor + drive that I was considering: Instead of a Stepper motor I am considering to buy a 1kW Servo motor. Following the stepper motor tutorial I managed to get the job done controlling the stepper motor by programming the speed (rpm) and direction inside the Arduino. I opted to go for an Arduino, bought the Arduino Mega 2560 and a 30Nm stepper motor. I have a simple application, really basic, where I needed to control a motor (speed and direction). I am relatively new to Arduino and thus why I am forwarding my question. ![]()
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