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Kirpal,<br>
I have never tried to feed 240V to an IO101, so I don't know the
answer. But as the pump takes a maximum of only 950-1100 watts
(approximate here, from memory). The usual reason for adding an
IO101 is to allow a portable generator to back up a PV array during
cloudy weather or a broken pipe, and the most portable generators
are the little 1kW or 2kW inverter-generators, and the supplied AC
pigtail is 15A 120V, so that's all I have ever tried. Sorry.<br>
<br>
You may have to look at a unit directly. I seem to recall it
contains an Allen-Bradley AC contactor, and you can check the specs
on the contactor directly.<br>
<br>
Sat nam.<br>
Allan<br>
<br>
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<font face="Times New Roman, Times, serif"><b>Allan Sindelar</b></font><br>
<small><a href="mailto:Allan@positiveenergysolar.com"><font
color="#000099" face="Times New Roman, Times, serif"><u>Allan@positiveenergysolar.com</u></font></a></small><font
face="Times New Roman, Times, serif"><br>
<span style="font-size: 10pt;">NABCEP Certified Photovoltaic
Installer<br>
NABCEP Certified Technical Sales Professional<br>
New Mexico EE98J Journeyman Electrician<br>
<b>Positive Energy, Inc.</b><br>
3201 Calle Marie<br>
Santa Fe, New Mexico 87507<br>
<b>505 424-1112</b><br>
<a href="http://www.positiveenergysolar.com/" target="_blank"><u>www.positiveenergysolar.com</u></a><o:p></o:p></span></font>
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<br>
On 4/6/2011 5:08 PM, Kirpal Khalsa wrote:
<blockquote
cite="mid:BANLkTimv0Y_6_D2C8xhNM4n_0cNm2CHh0w@mail.gmail.com"
type="cite">Allan.....According to the IO101 literature it is
rated at upto 265VAC......however in all its wiring "drawings" it
only shows one hot, one neutral and a ground!?? I am puzzled.....?<br>
Kirpal<br>
<br>
<div class="gmail_quote">
On Wed, Apr 6, 2011 at 2:23 PM, Allan Sindelar <span dir="ltr"><<a
moz-do-not-send="true"
href="mailto:allan@positiveenergysolar.com">allan@positiveenergysolar.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt
0.8ex; border-left: 1px solid rgb(204, 204, 204);
padding-left: 1ex;">
<div bgcolor="#ffffff" text="#000000"> Kirpal,<br>
I believe that the IO101 is only designed to accept 120VAC,
not 240. The supplied AC pigtail is 15A 120V, and it uses a
contactor, which would be a specific voltage only. Unless
I'm mistaken, you don't want to supply 220 (240) VAC.<br>
<br>
I don't have answers for your other questions.<br>
Allan<br>
<br>
<div> <font face="Times New Roman, Times, serif"><b>Allan
Sindelar</b></font><br>
<small><a moz-do-not-send="true"
href="mailto:Allan@positiveenergysolar.com"
target="_blank"><font color="#000099" face="Times New
Roman, Times, serif"><u>Allan@positiveenergysolar.com</u></font></a></small><font
face="Times New Roman, Times, serif"><br>
<span style="font-size: 10pt;">NABCEP Certified
Photovoltaic Installer<br>
NABCEP Certified Technical Sales Professional<br>
New Mexico EE98J Journeyman Electrician<br>
<b>Positive Energy, Inc.</b><br>
3201 Calle Marie<br>
Santa Fe, New Mexico 87507<br>
<b><a moz-do-not-send="true" href="tel:505%20424-1112"
value="+15054241112" target="_blank">505 424-1112</a></b><br>
<a moz-do-not-send="true"
href="http://www.positiveenergysolar.com/"
target="_blank"><u>www.positiveenergysolar.com</u></a></span></font>
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style="font-size: 10pt;"><b><br>
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</span> </div>
<div class="im"> <br>
On 4/6/2011 2:55 PM, Kirpal Khalsa wrote: </div>
<blockquote type="cite">
<div>
<div class="h5">Hi all....so I have a pumping project
using a grundfos SQ Flex pump....It will operate on
the grid when grid is present and then switch back to
solar ready if the grid power should fail.....here is
the set up...<br>
5-Sanyo HIT 220's Vmp non temp adjusted is 213VDC<br>
Pump is SQFlex 16 SQF-10 will have CU 200 controller
and IO101 AC input box....<br>
<br>
System has a pressure tank and pressure switch which
will be used instead of float switch as there is no
storage tank at or above ground level....<br>
This system is a retrofit project to an existing well
pumping system......<br>
Here is my questions:<br>
1. Pump and CU 200 controller are rated for upto
300VDC but IO 101 Controller is only rated for
225VDC.....is that open circuit or max power on the
modules....<br>
2. The Grundfos wiring diagrams only show 2 wires and
a ground leaving the IO101 going to the CU200.....What
is happening when there is 240VAC supplying the system
and what happens when it switches back to DC how is
the power transmitted on those wires? What happens to
the second leg of the 240VAC generator/grid input?<br>
3. Has anyone done one of these Grundos SQFlex back up
water pumping systems connected to a pressure tank and
did it operate as expected?<br>
Grundfos does not offer tech support.......that is
kind of a bummer....<br>
Thanks for any advice or help....<br>
<br clear="all">
<br>
--<br>
Sunny Regards,<br>
Kirpal Khalsa<br>
NABCEP Certified Solar PV Installer<br>
Renewable Energy Systems<br>
<a moz-do-not-send="true"
href="http://www.oregonsolarworks.com"
target="_blank">www.oregonsolarworks.com</a><br>
<a moz-do-not-send="true" href="tel:541-218-0201"
value="+15412180201" target="_blank">541-218-0201</a>
m<br>
<a moz-do-not-send="true" href="tel:541-592-3958"
value="+15415923958" target="_blank">541-592-3958</a>
o<br>
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-- <br>
Sunny Regards,<br>
Kirpal Khalsa<br>
NABCEP Certified Solar PV Installer<br>
Renewable Energy Systems<br>
<a moz-do-not-send="true" href="http://www.oregonsolarworks.com">www.oregonsolarworks.com</a><br>
541-218-0201 m<br>
541-592-3958 o<br>
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