Pool Main Pump Motor: Difference between revisions
→VFD Unit
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=== VFD Unit === | === VFD Unit === | ||
==== Overview ==== | |||
Cost is a major driver in the VFD selection process. As noted, up to $900 will be reimbursed by DTE. Longevity is an issue, too, as failure becomes a MAJOR issue for pool operation. | Cost is a major driver in the VFD selection process. As noted, up to $900 will be reimbursed by DTE. Longevity is an issue, too, as failure becomes a MAJOR issue for pool operation. | ||
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* ABB or Allen Bradley drives are top-of-the-line, but come at a cost. ABB drives are very easy to program (but expensive!). | * ABB or Allen Bradley drives are top-of-the-line, but come at a cost. ABB drives are very easy to program (but expensive!). | ||
* Automation Direct drives are inexpensive - but support is lacking. Later generation drives (such as the GS23, made by Delta) seem to receive positive feedback. Earlier generations (GS1, GS2) are to be avoided. Much of the negative feedback seems to be 10+ years old. | * Automation Direct drives are inexpensive - but support is lacking. Later-generation drives (such as the GS23, made by Delta) seem to receive positive feedback. Earlier generations (GS1, GS2) are to be avoided. Much of the negative feedback seems to be 10+ years old. | ||
* Delta is usually regarded as "decent". | * Delta is usually regarded as "decent" (again, Automation Direct GS23 line). | ||
* Teco may be a step up from Automation Direct and Delta? | * Teco may be a step up from Automation Direct and Delta? | ||
* Vacon is well-regarded. | * Vacon is well-regarded. | ||
* Yaskawa is recommended both in online forums, and by engineers at a local industrial controls firm. | * Yaskawa is recommended both in online forums, and by engineers at a local industrial controls firm. | ||
==== Yaskawa GA50U2042ABA ==== | |||
<i>The present front-runner.</i> | |||
This | * Priced at $842 via local distribution. | ||
* Sized for "normal duty" (ND) which is appropriate for variable torque (VT) applications (i.e. centrifugal pumps). | |||
* Conformally coated PCBs (IEC 60721-3-3, Class 3C2 for chemical gasses). <b>This is a huge plus!</b> | |||
* 42 A current rating. | |||
* No built-in DC link reactor (can be added externally between terminals +1 and +2). | |||
* No built-in EMC filter (necessary for non-symmetric supply). | |||
* Frame 5 is 10.24" H x 5.51" W x 5.51" D | |||
==== | ==== Automation Direct GS23-2015 ==== | ||
< | <i>The alternative (and past front-runner).</i> | ||
==== Automation Direct GS4-2015 ==== | |||
< | <i>Not presently being evaluated. | ||
* Substantially larger: 12.60" L x 7.48" W x 7.48" D (versus 8.15" L x 4.29" W x 6.06" D for the GS3). | * Substantially larger: 12.60" L x 7.48" W x 7.48" D (versus 8.15" L x 4.29" W x 6.06" D for the GS3). | ||
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* Might not be compatible with permanent magnet AC motors? | * Might not be compatible with permanent magnet AC motors? | ||
==== ABB ACS310-03U-50A8-2+J400 ==== | |||
<i>Not presently being considered.</i> | |||
=== Line Reactor === | === Line Reactor === | ||