- Question For Programmable Ladder Logic I Want To Design A Ladder Logic Where A Box Can Be Automatically Opened When Som 1 (140.72 KiB) Viewed 23 times
Question For programmable ladder logic, I want to design a ladder logic where a box can be automatically opened when somebody steps on a weight sensor. The lid must stay opened and an alarm must go off when opening. When the person comes off the weight sensor it must close briefly after. Answers E Electrical Engineering expert When there is No person on Weight sensor, the Alarm is ON else alarm goes OFF 000 0:2/0 The WEIGHT SENSOR ALARM 001 When Weight sensor gets ON, lid starts opening and stops when Lid is full open as sensed by Normally-open Lid full open Limit switch. 50 WEIGHT SENSOR LID FULL OPEN 낼 2 OPEN LID 002 When person goes off from sensor and Lid is full open, a 5second delay (through ON-delay Timer) is provided before the closing of Lid starts 1/1 52 罪 WEIGHT SENSOR LID FULL OPEN LID FULLY CLOSED T4:0/EN -TON Timex On Delay EN Timer T4.0 Time Base 0.1 CDN Preset 50 Accum 0 5 sec TIMER ENABLE BIT OF TIMER T4:0 003 0:2/2 After 5 sec delay, the closing of Lid starts. The closing operation stops when Normally open Lid fully closed limit switch gets ON. T4.0/DN JE DONE BIT OF TIMER T4:0 CLOSE LID 004 (END)