Loadstar Sensors DS-3000 Digital Load Cell Display & Controller - Manual (Page 34)

DS-3000U DS3000 User Guide
Loadstar Sensors, Inc. Page: 34 / 48 033-01419 Rev. 4
3. Press enter
4. You are now in programming mode at the dsplay prompt. Press mode until you reach the
relay 1 menu.
5. Press down , to the trgr 1 entry. Press enter, and a numeric entry field will appear. Enter
10.2 Lbs. Press menu until the digit corresponding to the 2 is highlighted, then press up and
down
to set the digit to 2. Press mode again to highlight each digit in turn, then up and down
to set each one to the correct value.
6. Press enter when you are complete. Press down to get to the next programming entry.
7. Select pnt1ta for pnt1 using the enter key to select. This will activate the output when above
this threshold.
8. Press down to trgr 2, press enter and a new numeric field appears. Enter 9.8 Lbs. Press
enter when completed.
9. Select pnt2tb for pnt2 using the enter key to select. This will activate the output when it drops
below this threshold.
10. Press down to sen1 corresponding to sensor 1. Press enter until “i” is displayed. This means
that the trigger condition will only look at sensor 1
11. Finally, press down to duratn, press enter and make sure it is set to contin.
12. Press enter to leave this field
13. Press menu till option page is displayed
14. Press down to trgt, press enter until trgt t is displayed. This enables the remote input to
tare the DS-3000 whenever the external contacts are closed.
15. Now exit programming mode: Press mode until the run entry
16. Then press enter to return to run mode.
17. Once in run mode, the program is now operational.
9.4 Automated Fertilizer Bag Fill Dispense system
At a “green” marketing company, they offer organic fertilizer, steer manure and other soil enrichment
products for sale by weight. In order to minimize costs, customers are allowed to bring their own containers,
which vary in weight, and place them on a scale, placed under a fill chute. After selecting the chosen
product, they may then purchase a fixed weight (amount) of the chosen product.
This application uses a scale platform with a single load sensor, and a system contact which provides a
contact closure once the customer has paid, and placed an appropriate container on the scale. The DS-
3000 then activates output contact #1, enabling material to pass down the chute- until the product weight
exceeds a preset value. After which the contact opens, shutting off the material flow. The system is then
automatically reset for the next customer, after the material and container is removed from the terminal.
9.4.1 Application Requirements:
1. 1 sensor each with 100 Lb load capacity, Sensor plugged into port 1
2. Remote input used to start process
3. Nominal product weight assumption, for this example 25 Lbs
9.4.2 Implementation Details:
1. Connect the outputs as in Figure 11: Schematic for Program Example 3