Introduction to Switches and Limit Switches

Limit switches restrict the travel of a robot arm by opening or closing circuits when a set limit is reached.

Levers and push buttons.

Proximity switches can sense objects without physical contact, while limit switches require physical interaction to function.

<p>It can only sense ferrous metal objects.</p> Signup and view all the answers

<p>It receives signals and detects disturbances caused by nearby objects intruding into its field.</p> Signup and view all the answers

<p>They transmit and receive reflections of pressure waves to sense objects.</p> Signup and view all the answers

<p>Because it provides greater versatility and functionality in applications involving different metal types.</p> Signup and view all the answers

<p>It can act as an interlock to automatically cut power when a gate is opened.</p> Signup and view all the answers

<p>A DPDT switch can connect each contact on one side to either of two contacts on the opposite side, allowing for multiple circuit configurations.</p> Signup and view all the answers

<p>A rotary switch can provide multiple throws, making it suitable for configurations beyond two throws, unlike toggle switches.</p> Signup and view all the answers

<p>Momentary switches, such as emergency power off (EPO) switches, require continuous operator action to remain in the 'on' state, enhancing safety.</p> Signup and view all the answers

<p>A momentary push button switch can be 'making' (normally open) or 'breaking' (normally closed), determining its electrical state when pressed.</p> Signup and view all the answers

<p>Manual switches are operated by human users, while limit switches are automatically actuated by mechanical processes without operator intervention.</p> Signup and view all the answers

<p>Limit switches must be precisely designed for size, lever travel, actuation force, and ruggedness to meet specific automation application requirements.</p> Signup and view all the answers

<p>Industrially hardened limit switches are designed to withstand severe environmental conditions typical in manufacturing settings, ensuring durability.</p> Signup and view all the answers

<p>Manual switches are designed considering the relatively similar physical traits of human operators, making them user-friendly.</p> Signup and view all the answers

<p>Ambient light can be shielded, and mirrors can be used to redirect the beam.</p> Signup and view all the answers

<p>Automatic air jets can alleviate dust and condensate problems that may obstruct the sensors.</p> Signup and view all the answers

<p>Overdesigning is considered when adverse environmental conditions are expected.</p> Signup and view all the answers

<p>Infrared sensors are virtually unaffected by stray ambient light, enhancing their effectiveness.</p> Signup and view all the answers

<p>The use of a modulated infrared beam is gaining popularity.</p> Signup and view all the answers

<p>Fiber optic light tubes can bend light beams around corners and transmit images through bundles of fibers.</p> Signup and view all the answers

<p>Solid-state LEDs have lower power requirements and greater reliability compared to incandescent sources.</p> Signup and view all the answers

<p>Infrared sensors detect electromagnetic radiation from hot objects within the infrared spectrum.</p> Signup and view all the answers

<p>Fiber optics are more efficient for communication circuits as they allow for the transmission of modulated light signals, reducing signal loss and increasing bandwidth.</p> Signup and view all the answers

<p>Lasers deliver concentrated and collimated beams of light that can detect small objects over long distances with high precision.</p> Signup and view all the answers

<p>Computers analyze automation system inputs by processing data and determining actions based on the information received.</p> Signup and view all the answers

<p>Counters determine and keep track of the number of items present or passing through an automated system.</p> Signup and view all the answers

<p>The miniaturization of computer circuits and reduced costs due to technological advancements have significantly increased manufacturing automation applications.</p> Signup and view all the answers

<p>Laser beams can be used for precise measurement, detecting the presence of objects, and providing long-distance control in automated systems.</p> Signup and view all the answers

<p>Solid-state electronic counters are typically more reliable, faster, and capable of handling complex counting tasks compared to mechanical counters.</p> Signup and view all the answers

<p>Amplifying laser light increases its intensity, allowing it to deliver more energy to a focused area over long distances.</p> Signup and view all the answers

<p>The core automatically returns to its original position due to spring action.</p> Signup and view all the answers

<p>Relays are used to switch electrical circuits on or off in response to an electrical signal.</p> Signup and view all the answers

<p>A latching relay maintains its state after being energized, while a nonlatching relay requires continuous power to stay active.</p> Signup and view all the answers

<p>The two states of a relay when deenergized are 'normally open' and 'normally closed'.</p> Signup and view all the answers

<p>A relay can be designed to cut off power to a device when it receives an electrical signal.</p> Signup and view all the answers

<p>Solenoids are particularly useful in applications that require quick, discrete actions rather than controlled movements.</p> Signup and view all the answers

<p>Low-voltage direct current operation ensures safety and compatibility with sensitive electronic components.</p> Signup and view all the answers

<p>Sensor-triggered relays use logic networks to control power circuits based on sensor inputs.</p> Signup and view all the answers