The ladder logic is as shown in the figure. IF THEN turn RED light ON (Door is fully closed) IF AND THEN turn Yellow light ON (Door is ajar). IF THEN turn green light ON (Door is fully open). Logic Used in Solving the Problem: The Shut Lamp will be illuminated if the door is in the Fully Closed position. The Open Lamp will be illuminated if the door is in the Fully Open position. Under no circumstance will both motor windings be energized at the same time. If the Door is already fully closed, Pressing the Close Switch will Not energize the motor.
If the Door is already fully opened, Pressing the Open Switch will Not energize the motor. If the switch is released, or if limit switch LS2 closes, the door movement will halt immediately. The closing operation will continue as long as the switch is held down. Pressing the Close Switch will cause the door to move down (close) if not already fully closed. If the switch is released, or if limit switch LS1 opens, the door movement will halt immediately.
The opening operation will continue as long as the switch is held down. Solution of Exercise #1: I am reproducing below the criteria provided in the LogixPro Exercise #1 in the Door Simulation exercises: Pressing the Open Switch will cause the door to move upwards (open) if not already fully open. It is assumed that that the motor direction can be changed by changing voltage polarity through suitable wiring using contactors.
#Automatic door logix pro simulator#
However, it is assumed that all other Inputs and Outputs in the LogixPro Door Simulator are available and are therefore used in solving the problem.īecause door movement is not maintained when either switch is released, there is no need to use seal-in contacts. Therefore the STOP switch is not required and is not used in solving the problem. Movement will not be maintained when either switch is released. The OPEN_D and CLOSE_D push buttons are used to control the movement of the door. When the door is fully closed, both limit switches are closed. As soon as the door starts moving down, the top limit switch (LS1) closes. When the garage door is fully open, the contacts of both limit switches are OPEN. The limit switches use “Normally Open” switches. This is where LogixPro really out-shines typical PLC training setups employing a. First, note a few things about the limit switches as well as the problem itself: Chip makers in Taiwan will do their best to squeeze out more chips said Taiwan’s Minister of Economic Affairs Wang Mei-hua after having lunch with representatives of TSMC, UMC, Vanguard International Semiconductor Corp, and Powerchip Semiconductor Manufacturing Co., according to. Thus, this is the problem I have solved and explained below. Week In Review: Auto, Security, Pervasive Computing. The closest one I could find is Exercise #1. It also has many output terminals, through which it outputs high and low signals to power lights, solenoids, contactors, small motors, and other devices lending.
Hi Mike: I looked through the Door Simulation exercises to determine which one you referred to in your email. A PLC has many input terminals, through which it interprets high and low logical states from sensors and switches.
0 kommentar(er)
