Varios 6 Pump, Long Ramp - Soft Start

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Hkinkade

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I need to have my return pumps do an extended soft start ramp, both when I initiate a start and when the power is restored. My drain system is complex and there is significant water inertia to accelerate in my line going to the sump room (50' away). When I turn the pumps on it will raise tank / overflow box level beyond steady state levels to begin to accelerate the flow. This takes time and the level in tank raises until the sump levels drops below pump inlets. This behavior is a safe guard to prevent tank overflow, yet is not appropriate for normal operations. Has anyone done this with the Hydros???
 
Well for what it's worth it appears this is not possible with Hydros. Coral Vue, please please please develop a module or functionality to perform some math and other more advanced functionality (similar to this issue), love the product though, but for power users it's got some short comings. Even though power users may be a very limited market, don't forget many people recognize those who are able to do complex / complicated functionality and buy the product based on their use. It does have large marketing value, although not easily measured.

My solution, not preferred but it will work, I have two pumps. When I turn them both on the inrush of flow overwhelms the system until my drain begins to reach full flow. So I used dependancies and delay the second pump from coming on for 45 seconds. It works for now.
 
I have not tried this but you have a schedule for the pump. If you could create a schedule that has a lower speed and use a output to select that schedule using the depends on in the schedule and use the return coming on as the input and set a maximum on time for that output and set run past max on time to off but not set an alarm state. Then that output would come on for the max on time then go off. So you could have it run the slower speed schedule instead of the normal one on startup. You would have to set the time on that schedule from 00:00:00 to 00:00:00 so it could be used anytime. Just set the dependency mode on the slower speed schedule to off if off and the regular schedule or schedules to off if on since you do not want the regular schedule to run when the slower schedule is running.
 
I have not tried this but you have a schedule for the pump. If you could create a schedule that has a lower speed and use a output to select that schedule using the depends on in the schedule and use the return coming on as the input and set a maximum on time for that output and set run past max on time to off but not set an alarm state. Then that output would come on for the max on time then go off. So you could have it run the slower speed schedule instead of the normal one on startup. You would have to set the time on that schedule from 00:00:00 to 00:00:00 so it could be used anytime. Just set the dependency mode on the slower speed schedule to off if off and the regular schedule or schedules to off if on since you do not want the regular schedule to run when the slower schedule is running.
Danny, Thanks that's a good suggestion. For now the delay on the startup of the second pump is work well and more straight forward. Yet, your suggestion seems practical and may have other applications down the road.
 
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