Week 12 : Execute Button

                                  

 

We have improved our front panel appearance for power supply as shown in the diagram above.

• As for safety purposes,we added in one EXECUTE BUTTON for each of the programs to prevent some careless mistakes make by operators such as typo like 235 V to 2350 V.

•  With this EXECUTE BUTTON, it acts like ENTER,every time after we edit the voltage level for each phase,it is necessary for us to press the button to call out the voltage from power supply.  

Here is the example of careless mistake might make by the operators - accidentally set the voltage to  2350 V. 

• With the absence of EXECUTE BUTTON, the power supply will directly supply 2350 V which causes overheating and damage to the power supply.

• Besides, we added in the VOLTAGE OUTPUT LIMIT at the right side to have double safety protection.We set the maximum voltage output limit to 270 V.

 

This is how the EXECUTE BUTTON"s block diagram looks like.We put it into a event structure so that the program will wait for user to press the button first, then only it will load the voltage.

 

For every EXECUTE BUTTONS , we set their MECHANICAL ACTION to LATCH.

When the user press the button, it executes, the green light indicator lights on, until it finish executing,the indicator lights off.