1ph or 3ph VFD selection
1ph or 3ph VFD selection
(OP)
I have a small agitation motor with the following charateristics:
230/400V 3ph50Hz 0.42/0.24A 100RPM Input Power 0,14W
It will be used to agitate condensed milk in a vertical 400l tank.
I will use a Schneider VFD to control the speed between 30-100RPM.
The single phase ATV12 mode is 50% cheaper than the 3phase ATV321.
What will be the disadvanges of using a single phase 230V VFD with output 3x230V instead of a 3ph 3x400V?
Could this cause any problems?
230/400V 3ph50Hz 0.42/0.24A 100RPM Input Power 0,14W
It will be used to agitate condensed milk in a vertical 400l tank.
I will use a Schneider VFD to control the speed between 30-100RPM.
The single phase ATV12 mode is 50% cheaper than the 3phase ATV321.
What will be the disadvanges of using a single phase 230V VFD with output 3x230V instead of a 3ph 3x400V?
Could this cause any problems?





RE: 1ph or 3ph VFD selection
At 0.42 Amps there may not be any disadvantage.
Bill
--------------------
"Why not the best?"
Jimmy Carter
RE: 1ph or 3ph VFD selection
RE: 1ph or 3ph VFD selection
"Will work for salami"
RE: 1ph or 3ph VFD selection
Bill
--------------------
"Why not the best?"
Jimmy Carter
RE: 1ph or 3ph VFD selection
There will be only one unit as this tank will be installed in a bakery.
It's a nano size 1ph drive and it's easier to fit into the electrical panel of the tank than the 3ph model.
Since it not going to have any influence the output torque negatively, I'm going with the 1ph 230V model.
What about electrical box and the cables? Should I use any special type like shielded cables?
RE: 1ph or 3ph VFD selection
It may not be a problem but worth checking as, what appears to be a lower cost solution, may turn out more expensive if not done correctly, and I don't just mean the $'s.
RE: 1ph or 3ph VFD selection
"Will work for salami"
RE: 1ph or 3ph VFD selection
Keith Cress
kcress - http://www.flaminsystems.com
RE: 1ph or 3ph VFD selection
http://www.inverterdrive.com/group/AC-Inverter-Dri...
The drive has integrated EMC and a heat-sink but without a fan.
I'm thinking on putting air vents on the box with some dust filters.
According to drive specifications the ambient operation temperature is as follows:
-10...40 °C with protective cover from the top of the drive removed,
40...60 °C with current de-rating 2.2 % per °C
Along with the drive inside the box I will have a circuit breaker and the contactor of tank's compressor.
The box will be probably mounted on cooling unit and located near the compressor.
Is there any actual difference between plastic and metal boxes?
@ozmosis
I will have the RCD check in mind.
RE: 1ph or 3ph VFD selection
Bill
--------------------
"Why not the best?"
Jimmy Carter
RE: 1ph or 3ph VFD selection
in response to you last post please note the follwing: removing heat by natural convection (no fan) will not work through filters. Your choices for an appropriate thermal design are as follows:
- natural concection inside a quite large enclosure, heat conduction through the wall, natural convection from ouside enclosure to ambient
- small enclosure with fan and filter (not really recommended, because such filters are usually not replaced/cleaned as needed)
- choose a drive that provides suitable ingress protection by it's own enclosure (best option from my point of view)
RE: 1ph or 3ph VFD selection
What does exactly the following means in the specifications?
"Heat Loss at max output: 27W."
RE: 1ph or 3ph VFD selection
"Will work for salami"
RE: 1ph or 3ph VFD selection
RE: 1ph or 3ph VFD selection
Keith Cress
kcress - http://www.flaminsystems.com