Good morning. I am hoping to get some insight on a setup I am working on.
Current setup: 24V system. An area sensor when flagged by hand does two things. First, it sends a signal to the network that lights up a bin location and second, it takes the empty tray away that the product was in via small divert conveyor. The area sensor is connected to a relay that has a 2ms timer delay. After 2ms, the tray takes off.
Problem: Some items in the tray are heavy and causes the tray to take off while item is being removed. I can't add more delay as this will cause added time to the whole process.
Solution idea: I want to add a foot pedal which temporarily disables the area sensor when pressed in which will allow item from tray to be removed and when foot pedal is released bin location will light up and empty tray will take off. Also the area sensor should be back in normal use.
Solution problem: I am having a hard time figuring out how to light up bin location after foot pedal is released and putting the area sensor back in normal use.
Attempts made: I connected foot pedal in series/ normally closed with area sensor which cuts off signal when foot pedal is pressed in and when item is removed from tray, foot pedal is released and area sensor has to be flagged again in order to get bin location and tray to divert to return line.
Question: How can I set this up where after foot pedal is released I get a bin location and put area sensor back in normal use?
Thank you in advance.
Timing diagram 1. Existing system. (OP to edit.)
____ Area sensor: _______| |_________________ ___ Light request: ________| |_________________ ____ Conveyor move: ___________| |_____________
Timing diagram 2. Desired operation. (OP to edit.)
Step1. ____ Footswitch pressed: _______| |__________ Hold conveyor no light bin: ________________________ Area sensor input deactivate: ________________________ Step2. ___ Footswitch released: _________________| |_________________ ___ Light request: ________| |_________________ ____ Conveyor move: ____________________| |____ ___ Area sensor back to normal : _______| |_________________ Footswitch: ________________ Step3: ___ Area sensor: _______| |_________________ ___ Light request: ________| |_________________ ____ Conveyor move: ____________________| |____ ```