Joe. B
Guest
J
I have recently set up an Automation Direct DL06-AR controller to alternate the operation of two boilers. I'm using the controllers analog capabilities to monitor steam pressure and turn on/off the boiler based on steam load. I currently use a counter to alternate the boilers based on a run time set via operator interface.
Example of current operation:
1.Steam pressure falls below 6 psi - boiler #1 starts
2.Delay Timer (Operator adjustable) 2 min.
3.If steam psi hasn't reached 8psi(operator adjustable) in 2 min.
boiler #2 starts.
4.Both outputs latch until psi reaches 11 (user adjustable)at which point both boiler outputs open until psi drops below 6.
My counter sequence is such that the outputs continue to alternate and I can't turn on one boiler and designate it as the lead. I would like to incorporate an hour meter for each boiler to monitor run time for maintenance purposes and to turn on/off chemical pumps.
I hope I explained this well enough. Suggestions would be greatly appreciated.
Example of current operation:
1.Steam pressure falls below 6 psi - boiler #1 starts
2.Delay Timer (Operator adjustable) 2 min.
3.If steam psi hasn't reached 8psi(operator adjustable) in 2 min.
boiler #2 starts.
4.Both outputs latch until psi reaches 11 (user adjustable)at which point both boiler outputs open until psi drops below 6.
My counter sequence is such that the outputs continue to alternate and I can't turn on one boiler and designate it as the lead. I would like to incorporate an hour meter for each boiler to monitor run time for maintenance purposes and to turn on/off chemical pumps.
I hope I explained this well enough. Suggestions would be greatly appreciated.