During road works, signage by means of arrows necessary. It is a must for installations to be
Question:
During road works, signage by means of arrows necessary. It is a must for installations to be multifunctional. We think e.g. to the signage by means of moving arrows. Depending on the works, an arrow running to the right or left may be required.
This one exercise lends itself well to designing such an arrangement. The running light is switched on with the push button S 1.
Then, depending on the position of the switch, the start running light in a specific direction.
The running light must change direction according to the state of switch S3.
When pushing button S2, the running light is stopped at the end of the cycle.
An alarm chain is started in case of a defect. An optical and acoustic signal occurs.
When an alarm is accepted, the acoustic signal is lost.
After pressing the reset, the optical alarm stops. This is the normal procedure if the error is resolved before pressing the reset. The full alarm restarts after pressing reset if the fault has not been removed.
You will find the necessary inputs and outputs in the table below.
I1 | Push button | Acceptance alarm | |
I2 | Push button | Reset Alarm | |
I3 | Push button | Normal open contact start | |
I4 | Push button | Normal open contact stop | |
I5 | Switch | Normal open contact | |
I6 | switch | Normal open contact |
Q1 | auxiliary lamp indication starts installation |
Q2 | First arrow |
Q3 | Second arrow |
Q4 | Third arrow |
Q5 | Acoustic alarm |
Q6 | Optical alarm |
Create an graphical representation of the setup ?
Applied Physics
ISBN: 978-0132109277
10th Edition
Authors: Dale ewen, Neill schurter, P. erik gundersen