It is an embedded controller and trying toconnect a 24v DC solenoid valve to it.
I need to know how can i control a 4 way 3 position valve by the controller. how can i switch the states?
Actually i have solenoid valve and a PLC which develops a +/_ 10 v output, using which i need to supply to a solenoid valve which is of 24V. Can you tell me how can i do it?
Use the 10 volts to drive a transistor and have the transistor deliver the 24 volts to the solenoid. Mosfet transistors do well at this because 10 volts is a good switching voltage and mosfets carry large currents very well.
does your PLC not have a digital output of any kind? using an analog output to drive a transistor to switch a digital device is like reaching around the world to scratch your ass.
Now you're ahead of me...on the outputs, that is. I don't know enough about these things to know he was talking about an analog output. I'm going to work now. You take over.
the whole ±10V thing is what made me thing he's talking about an analog output. maybe I misinterpreted that. But yeah, if it's a 10V digital output then transistor or mosfet would be the answer. or even a relay, depending on the power constraints and application.
OP, is this for a home project or professional job? Is this an industrial application?
The signal is via a digital output. How do i control it in three different positions, considering i have a direct 24 volts input to the solenoid valves from the digital output
that depends if its AC or DC; depends if you are using internal or external power supply( i.e. depends if your configuration is sinking or sourcing). These are all questions I have already asked but apparently it's too much of a challenge to answer. You still haven't given me any information on your PLC. Why must I go to the extra effort of repeatedly asking for information just to help you? these are things you should have put in post #1. With vague information from you, the best I can give is a vague answer: connect a wire from the PLC to the relay and a wire from____________________ to _____________________. theres your answer.