sp71
Hello,
I have a friend who just recently moved into an off-grid home, and I've been trying to help him get his stuff set up.
He has a Generac Centurion (I think was the name) 8KW unit that I'm trying to figure out how to hook it up to be controlled by the AC inverter (a Xantrex unit with the Auto Generator Start module).
From what it appears, the generator's auto-start input is configured only for a direct connection to utility voltage... He needs it to start by the closing of a relay contact and there seems to be no information in the manuals on how to set it up this way.
Not knowing what all was needed, he bought it together with a large transfer switch/breaker panel box which he didn't need, Is it because of that why it's set up like this? Are there jumpers I can change on the control board or maybe a set of terminals inside somewhere where I can connect to? I've got a couple ideas for workarounds, but I'd rather do this the proper way if it's possible. :confused:

Appreciate any info
TIA
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Skip Douglas SkipD
sp71;7994 wrote:
He has a Generac Centurion (I think was the name) 8KW unit that I'm trying to figure out how to hook it up to be controlled by the AC inverter (a Xantrex unit with the Auto Generator Start module).
We would need to know the exact (as it is written on the nameplate) model number of the generator.

There are generators made by Generac that have controllers which can be switched from the normal configuration (activated by loss of utility power and driving an automatic transfer switch) to a configuration that makes it become operable by a single contact.
Skip Douglas
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sp71
Unfortunately the generator is 100 miles away so I can't go look at it, however I just found a printout from the activation page within one of the manuals... It's a model number 0058910 purchased about 2 months ago. Hopefully that helps.
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bronco
hey your in luck that is a nexus controller and can be changed to a 2 wire start. but you need special pins that go into the pulg in the back
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sp71
bronco;7999 wrote:
hey your in luck that is a nexus controller and can be changed to a 2 wire start. but you need special pins that go into the pulg in the back


Details please :D (a link maybe if one is available)
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bronco
part number for the pins is #0E5431E.once your controller is activated and you are at the menu screen press
esc
up arrow
up arrow
down arrow
down arrow
esc
esc
thne go to edit and scroll down to remote start press ent then up to yes the ent then esc a couple of times then go back through it all again and check if the setting still's say's yes. Now you are done. Don't forget that you will need some kind of batt. charger also.
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Skip Douglas SkipD
bronco;8006 wrote:
part number for the pins is #0E5431E.once your controller is activated and you are at the menu screen press
esc
up arrow
up arrow
down arrow
down arrow
esc
esc
thne go to edit and scroll down to remote start press ent then up to yes the ent then esc a couple of times then go back through it all again and check if the setting still's say's yes. Now you are done. Don't forget that you will need some kind of batt. charger also.
Is there a published document that we can post here covering this? For example, I don't see anything about where the pins go and why.
Skip Douglas
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sp71
SkipD;8007 wrote:
Is there a published document that we can post here covering this? For example, I don't see anything about where the pins go and why.


×2 (million).
Not wanting to blow up the controller on this thing by just guessing at it.

I've become aware of the battery charger issue too (Thank you :) ), already got a "battery tender" thing for it.
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Skip Douglas SkipD
sp71;8008 wrote:
I've become aware of the battery charger issue too (Thank you :) ), already got a "battery tender" thing for it.
Is the power in the home going to be active all the time? If so, the battery maintainer - powered by the constantly-on power - would be a good move. If power is not on all the time, a solar-based charging system might be in order.
Skip Douglas
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sp71
Power should normally always be on, yes. (AC inverter on a battery bank with a solar array and a wind turbine or 2 is the planned goal. The generator will be backup should there be a string of cloudy windless days)
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bronco
no published document that I have on the service web site. was given it by tech support. Sorry about the placement of the pins, got to many phone calls at work. So the wires go into the big plug in spots 23,24 or 22,23 don't have my notes handy just know that there are 2 spots in the plug next to each other in the outside row.
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sp71
I'm looking at the schematic diagram in the manual, it shows a jumper wire going from pin 23 of the controller board to pin 15. Pins 21 & 22 show nothing connected to them, pin 20 is the "transfer" signal I assume to engage the switch (I would assume this is also the same as the generator "run" signal lead). There is no pin 24 shown on the diagram.

Any of that ring a bell? Would 21 & 22 be where the two-wire start goes? Any chance of finding your notes just to confirm?

I guess I could try calling Generac Monday see what they say, though I have to be back out there to finish this up that day as well.
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sp71
Got it

Well I figured I'd come back to give you guys (and anyone else that might find this post) an update, along with some info on it's operation, being that there doesn't seem to be much documentation out there on this yet...

Pins 21 & 22 is where the two-wire start connection is made to the controller.
The setting for Remote Start is right within the menu, you just have to scroll with the Down arrow until you get to it, then set it to On. Once set to On, the generator remains in standby (ready to run) while switched to Auto until connection is made between the two wires.

Unfortunately the generator maintains the delayed starting & stopping routines as already outlined in the manual for normal configuration, which (along with apparent lack of a direct B+ "run" signal lead) somewhat complicated it's being controlled remotely by the inverter, but with a little tweaking and adding in a relay, we got it working.
We also came to realize this probably wasn't the correct gen for this app, but until more funds become available, he's going to have to make due with it for a few more months.


Anyway, Thanks again... Appreciate the help. :cool:
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ohmslaw
We used the fuel solenoid + & - for the run sense wire. I just connected an Eco gen and I am quite impressed with the unit. As for the magnum inverter and subsequent controls not so much.
Tim
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sp71
ohmslaw;8188 wrote:
We used the fuel solenoid + & - for the run sense wire. I just connected an Eco gen and I am quite impressed with the unit. As for the magnum inverter and subsequent controls not so much.
Tim


Thanks for the info, I'll look into seeing if that might work any better the next time I'm up there. :cool:
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