Hi all, and sorry for my poor English.
I have a water controller (24v) having many zones. The same controller always start the master valve and one programmed zone. The fertilizer pump start because I have a relay connected to the master (I use a relay 24v / 220v to start the pump) Fig 1.
My problem is every zone got fertilizer and some time they don't need it.
So I connected the relay to all zones using a switch to turn on or off where needed and used a diode on every positive line zone, for no return current (Fig 2). But the relay just don't stay on, he goes crazy intermittent and pump don't start. If I remove the Diode it works correctly and pump start.
What is wrong ? Can't we connect a diode before a relay ?
Tanks in advance and hope people got what I'm trying to say....
Fig 1:
Fig 2:
I have a water controller (24v) having many zones. The same controller always start the master valve and one programmed zone. The fertilizer pump start because I have a relay connected to the master (I use a relay 24v / 220v to start the pump) Fig 1.
My problem is every zone got fertilizer and some time they don't need it.
So I connected the relay to all zones using a switch to turn on or off where needed and used a diode on every positive line zone, for no return current (Fig 2). But the relay just don't stay on, he goes crazy intermittent and pump don't start. If I remove the Diode it works correctly and pump start.
What is wrong ? Can't we connect a diode before a relay ?
Tanks in advance and hope people got what I'm trying to say....
Fig 1:
Fig 2: