Limit Switch, Servo Motor Resources

In summary, the person is looking for better understanding of limit switches and servo motors, and asks for website or textbook recommendations. One suggestion is to check out the leading text on the subject, as well as the websites of major servo manufacturers for application manuals. Limit switches are often used as over-travel limits to disable the servo amp in case of issues with motion control or position feedback. A diode can be used to prevent motor torque once the limit is reached.
  • #1
mbrmbrg
496
2
I need a better understanding of limit swtiches and servo motors than I'm getting from Wikipedia :)
Any website/textbook recommendations? (My background is physics.)

TIA!
 
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  • #4
Another approach is dig through the websites of major servo manufacturers such as Yaskawa, Siemens, Indramat (now, Rexroth-Bosch), etc. on the lookout for application manuals.

For Yaskawa, page through the Sigma II Servo System User Manual
https://www.yaskawa.com/downloads?_...oadportlet_documentType=Manuals+-+User+Guides

Limit switches are often used as over-travel limits to disable the servo amp when something goes haywire with the motion controller, position feedback, and so on,.
 
  • #5
With a simple DC servo system, a diode in parallel with the limit switch will prevent current and so motor torque once the limit is reached, while still permitting the motor to reverse back into the safe range.
 
  • #6
Thank you all!
 

1. What is a limit switch?

A limit switch is an electromechanical device that is used to detect the presence or absence of an object within its range. It works by sending a signal to a control system when the object reaches a predetermined position, allowing for precise control and positioning in various applications.

2. How does a limit switch work?

A limit switch typically consists of a lever or roller that is actuated by the movement of an object, a spring mechanism, and an electrical contact. When the lever or roller is actuated, it triggers the spring mechanism which in turn activates the electrical contact, sending a signal to the control system.

3. What are the different types of limit switches?

There are several types of limit switches, including mechanical limit switches, proximity limit switches, and optical limit switches. Mechanical limit switches use physical contact to detect the presence of an object, while proximity limit switches use magnetic, inductive, or capacitive sensors. Optical limit switches use light beams to detect the presence of an object.

4. What is a servo motor?

A servo motor is a rotary actuator that is used to precisely control the position, speed, and acceleration of a mechanical system. It consists of a motor, a feedback device, and a control circuit. The feedback device monitors the current position of the motor and sends signals to the control circuit to adjust the motor's movement accordingly.

5. What are the advantages of using limit switches and servo motors?

Limit switches and servo motors offer several advantages, including precise control and positioning, high accuracy, and reliability. They are also compact and easy to install, making them suitable for a wide range of applications in industries such as manufacturing, robotics, and automation.

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