Dietrich Idaho Water Project 06-18-2014. Programmable logic controller operation evaluation.
06-18-2014 Dietrich Idaho Water Project. Programmable logic controller operation evaluation.
Video showing results of plc programming done by Rusty Satterwhite, programming consulant with ProWest Engineering. Dietrich, Idaho well-house.
10:00-1:00: Opened two hydrants at end of seventh street, made video of #1 pre-lube starting showing chlorine pump running before well pump turned on, made video showing both pumps were in auto, electric valve was in auto, manual valve was open, as system entered into low water condition pump #2 failed to start, made video showing empty pipe error for meter on well #2, worked on punch-list for plc.
Pump #1 & #2 need to run alternately.
Whichever pump is acting as lead should start when lead pump start condition is reached.
Whichever pump is acting as lag should turn on in addition to lead when low water condition is reached.
When both pumps are running due to low water condition, they should both stay running until pump stop level is reached.
Chlorinator should run whenever water is being pumped to tank in auto or manual mode.
Chlorinator should not run during pre-lube or when pumping to waste.
Flow readings on plc interface needs to read for correct pumps.
Flow needs to read the same on the plc interface as it does on the meters.
Plc interface needs to display accurate water table level for both wells, and show accurate changes in water table level for the correct wells.
As the water table goes down, the number in feet shown on the plc interface needs to increase, as it raises the number needs to decrease.
When pump #2 is in auto it needs to run automatically when pump #1 is off for service. (e.g.: when bearings are being replaced early on in their life due to being smoked and melted on initial startup.)