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UTS10BI and two-wire generator start

APC UPS for Home and Office Forum

Schneider Electric support forum for our APC offers including Home Office UPS, Surge Protectors, UTS, software and services and associated products designed to share knowledge, installation, and configuration.

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dBeau_apc
Crewman
Crewman
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UTS10BI and two-wire generator start

This was originally posted on APC forums on 11/10/2011


I've seen the instructions for getting the UTS to auto start/stop a honda generator. But I've been unable to confirm that the UTS can start/stop a generator with the much simpler two-wire control. Can anyone here shed some light?


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Boatingrtb_apc
Lieutenant JG
Lieutenant JG
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Re: UTS10BI and two-wire generator start

This was originally posted on APC forums on 4/12/2012


Did you get the two-wire generator start to work with the UTS?

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BillP
Administrator Administrator
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Re: UTS10BI and two-wire generator start

This reply was originally posted by Angela on APC forums on 11/11/2011


hmm. i asked around and we are not sure of the specifics. we think that it operates on some type of normally open/closed connection but then i was told that this functionality is something we no longer support. the auto-start kit was designed but never produced. i am not sure if honda will know anything on their end.

dBeau_apc
Crewman
Crewman
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135

Re: UTS10BI and two-wire generator start

This was originally posted on APC forums on 11/11/2011


The honda requires some smarts in the transfer switch. The UTS has two relays that it uses to start/stop the honda. One will spin the starter, the other is to kill the engine. This means the UTS has to handle the starting logic (spin the starter, verify it started, repeat if it didnt etc). Other generators require just a single relay in the transfer switch. The relay closes to signal the generator to start and opens again to signal stop. With this setup, all the starting and retry logic is in the generator. Clearly, if the UTS can start the honda, it's just a couple of lines of software from being able to start a two-wire start generator. It has all the necessary hardware.

The instructions for the honda auto-start kit are but a google search away. It's pretty clear from the "included parts" list that the kit isnt really needed. It contains just two readily available parts costing less than $2/each. The most interesting thing about the kit turns out to be the instructions as they refer to menu options in the UTS that are not mentioned in the operators manual. But rather than describe the options completely they only mention how to set them to start the honda's listed in the introduction. I'm guessing, but have no way to confirm, that setting these options differently would allow control of a two-wire start generator.

It's starting to look like I'll have to get my hands on a UTS to find out.

Boatingrtb_apc
Lieutenant JG
Lieutenant JG
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136

Re: UTS10BI and two-wire generator start

This was originally posted on APC forums on 4/12/2012


Did you get the two-wire generator start to work with the UTS?