Rheostat a Pump? - Page 2

tbittner · 12-19-2007, 10:57 PM

I've been reading about this capability in 3 phase motors. You need a 3 phase motor (controller) which can be connected to a PC via an rs-232 port, and a 3 phase pump. Many motors come with auto shutoff in a dry condition. With this combination it's possible to control the rpm of the pump. In fact, that is what they are designed for. They are twice as efficient as the single phase, 115v pumps we currently use which means they use half the electric. Surprisingly, you can buy the controller and the pump that would equal a Sequence Barricuda as far as pumping capability for around $275. For a few dollars more, the motor comes equipped with a flow sensor which will tell the PC what the flow rate is. A program can then be developed to adjust the power being supplied to the pump to keep a constant flow rate.

Amazing stuff!

Most of these require a 240v circuit which all breaker panels can provide. The major downside is, you'd probably have to run different wire.

Scooterman · 12-20-2007, 08:44 AM

Again as I already mentioned, VFD (Variable Frequency Drive) no such thing as a three phase pump but three phase Motor yes & you can control it with the VFD & a laptop or computer via RS232 or these days probably Ethernet by the time you get all what you need your probably better off with a Tunze unless your a commercial operation. Efficient, powerful yes, (you can blow away any reef type pump including the sq), also elaborate, god to know what your doing & will have a cost, If you search RC for FVD I think you'll find one done by a guy named Luke.

12-19-2007, 10:57 PM	#16 (permalink)
tbittner Watch this Ma! Join Date: Jun 2007 Location: Northern VA Posts: 5,562 View Gallery Karma Komment Add yours!	Re: Rheostat a Pump? I've been reading about this capability in 3 phase motors. You need a 3 phase motor (controller) which can be connected to a PC via an rs-232 port, and a 3 phase pump. Many motors come with auto shutoff in a dry condition. With this combination it's possible to control the rpm of the pump. In fact, that is what they are designed for. They are twice as efficient as the single phase, 115v pumps we currently use which means they use half the electric. Surprisingly, you can buy the controller and the pump that would equal a Sequence Barricuda as far as pumping capability for around $275. For a few dollars more, the motor comes equipped with a flow sensor which will tell the PC what the flow rate is. A program can then be developed to adjust the power being supplied to the pump to keep a constant flow rate. Amazing stuff! Most of these require a 240v circuit which all breaker panels can provide. The major downside is, you'd probably have to run different wire. __________________ Terry 150g predator tank full of killers. Soon to be upgraded to a 360g. 450g reef 300g sump.

12-20-2007, 08:44 AM	#17 (permalink)
Scooterman Elegance coral Join Date: Nov 2003 Location: Lafayette, Louisiana Posts: 1,238 View Gallery Karma Komment	Re: Rheostat a Pump? Again as I already mentioned, VFD (Variable Frequency Drive) no such thing as a three phase pump but three phase Motor yes & you can control it with the VFD & a laptop or computer via RS232 or these days probably Ethernet by the time you get all what you need your probably better off with a Tunze unless your a commercial operation. Efficient, powerful yes, (you can blow away any reef type pump including the sq), also elaborate, god to know what your doing & will have a cost, If you search RC for FVD I think you'll find one done by a guy named Luke. __________________ Scott Ardoin (Ard-Dwan)

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)