controlling 2 solenoid, time difference between

[larryfl1]

hey all,

i want 2 use 2 solenoid...basically when my sump needs water it opens solenoid 1 for 10 minutes.....this solonoid would purge the bad water from the ro as on and off caused poor quality... after 10 minutes then solonoid 2 would open and solonoid 1 would close causing water to go to the tank...

once the upper float is hit then solonoid 2 would close....

when water is called for it would repeat... again solonoid 1 only , then close 1 and open 2...


how do i do this with profilux?

[larryfl1]

any thoughts on this?

[Matthias]

Hi

unfortunately I don't understand what you want to do.

Are we talking about a min-max level control or about an automatic water change?
Both are built-in features and can be performed at predefined times.

[larryfl1]

the problem is when a solonoid on the ro unit opens the initial water is bad...

so my thought is this

ro line comes to sump area... there is a y connection with 2 solonoids....

when the float goes down and calls for water solonoid a should open...but only for a few minutes... after the few minutes solonoid b opens and runs until 2nd high level float hits...

the water from solonoid a will not go to the sump...the water from solonoid b will go to the sump...

the event needs to be triggered from low level float switch.. turn power to solonoid a for a few minutes then cut power to a and power b for the remianing time until high float hits...

[Matthias]

is this maybe an idea:

you have 2 timers (just an example)
timer 1 19:00 - 19:01
timer 2 19:02 - 19:10

you could use them to control solenoids A and B, but until now we didn't consider the level

solution: use programmable logic

logic 1 = timer 1 AND water 1
logic 2 = timer 2 AND water 2
(asuming you use level sensor 2 for monitoring the upper level)
then use socket functions logic 1 and logic 2

I think this (or similar) may work

[larryfl1]

great...thanks for the solution