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Unread 02-17-2015, 11:19 AM
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Re: Firing two solenoids together

R30 allows a Custom Circuit to create 24 V.

Per R42, a Relay Module can control multiple Pneumatic Solenoid Valves.

Except for the possibility of R44, I couldn't find anything that would prevent a Relay Module from switching 24 V.

The PWM Port can control the Relay.

Last edited by rich2202 : 02-17-2015 at 11:34 AM.
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Unread 02-17-2015, 11:53 AM
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Re: Firing two solenoids together

Quote:
Originally Posted by rich2202 View Post
R30 allows a Custom Circuit to create 24 V.

Per R42, a Relay Module can control multiple Pneumatic Solenoid Valves.

Except for the possibility of R44, I couldn't find anything that would prevent a Relay Module from switching 24 V.

The PWM Port can control the Relay.
[R41] B

Spikes are the only relay modules allowed. Maximum operating voltage is 16V. Methinks that might not end well.
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Unread 02-17-2015, 02:50 PM
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Re: Firing two solenoids together

Quote:
Originally Posted by JamesCH95 View Post
[R41] B

Spikes are the only relay modules allowed.
In this context yes, presuming that the pneumatic solenoid in turn controls an actuator. It's OK to use other relays for non-actuator items, such as lights and sensors.

Also, back to the original problem. If you can accept a momentary inequality, perhaps you could do something like:
  • Open Valve 1
  • Open Valve 2
  • Close Valve 1
  • Open Valve 1
Assuming that opens and closes each take 1 time step, (and they may very well have different time delays), at the next time step, each valve will be open and will have been open for three steps. By adding a short pause either before or after "Close Valve 1", you should be able to get them synchronized. Do the same thing in reverse at the other end of the run.
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