WATE CAD CONTROLS

Question

How can I set up a controls system that turns a pump on or off based on a fixed time, or turns it off when a certain level is obtained in the reservoir? Example: "Pump on at 8:30PM and pump off at 9am or when it reaches reservoir level 200.

MPachlhofer · Answer

Rene, 
 
A simple way to do this is to just make two controls. Here is an example: The first control would read like this, "IF Clock Time = 8:30 PM THEN PMP-2 Pump Status = On" and the second would read like this, "IF Clock Time = 9:00 AM THEN PMP-2 Pump Status = Off ". You could also do this using a "time from start" control, but a clock time control is probably easier in this situation if you want the controls to repeat everyday the same time. You can have a look at this wiki, which explains the difference between a clock time control and a time from start control. 
 
 communities.bentley.com/.../22023.what-is-the-difference-between-a-clock-time-control-and-a-time-from-start-control 
 
You can't have a control that turns a pump on and off based on a level in a reservoir because reservoirs don't have a level property, but you could do it based on the hydraulic grade. 
 
Regards, 
Mark