R
Hi Gang...
We have an application that is part of our on-line QA procedures. We must take a piece of cheese and weigh it on a static scale. The value from the scale is sent via RS-232 to a SPC system. We must take one sample for every
x number of pieces that exits the wrapping machine.
Sometimes they, the line crew, gets behind in the number of samples that are pending. To let them know how many samples are pending a PLC output flashes a pilot light. The on period is a half second and the off period is two seconds. If, for example, x samples are pending we have an on period of a half second followed by the quarter second off period then the next on period. We then continue this pattern until we have shown x on periods. Next comes the two second off period and then we start over.
The problem is... the bulbs blow out very fast. We have tried using high intensity 6.3 volt LED bulbs instead. They however cost the ridiculous sum of $52.00 EACH and even they fail after a period of time. Therefore... I am looking for a unit that has a two digit seven segment LED display (like something Red Lion would supply) that would take the pulse input from the PLC and display the number of pending samples.
Best Regards... Rick Kelly
Chief Technician
Natural Cuts
Cheese Operations
Kraft Canada
(613) 537-8069 V
(613) 537-8057 F
[email protected]
We have an application that is part of our on-line QA procedures. We must take a piece of cheese and weigh it on a static scale. The value from the scale is sent via RS-232 to a SPC system. We must take one sample for every
x number of pieces that exits the wrapping machine.
Sometimes they, the line crew, gets behind in the number of samples that are pending. To let them know how many samples are pending a PLC output flashes a pilot light. The on period is a half second and the off period is two seconds. If, for example, x samples are pending we have an on period of a half second followed by the quarter second off period then the next on period. We then continue this pattern until we have shown x on periods. Next comes the two second off period and then we start over.
The problem is... the bulbs blow out very fast. We have tried using high intensity 6.3 volt LED bulbs instead. They however cost the ridiculous sum of $52.00 EACH and even they fail after a period of time. Therefore... I am looking for a unit that has a two digit seven segment LED display (like something Red Lion would supply) that would take the pulse input from the PLC and display the number of pending samples.
Best Regards... Rick Kelly
Chief Technician
Natural Cuts
Cheese Operations
Kraft Canada
(613) 537-8069 V
(613) 537-8057 F
[email protected]