Short Game
Veteran Member
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Electrical/Electronic Question
- Thread starter RFB
- Start date
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k0ua
Epic Contributor
What my APC 1000 did after starting the generator is the following:
It would recognize that 120 volts was present then start to switch over to 120 power, but first it does a diagnostic routine, it would fail the diagnostics, (this takes about 3 or 4 seconds ) and then switch back to battery power, then start to switch back to 120 volt and over and over and over, so it never charges the battery back up, and never runs on the 120 volt supplied by the generator and just a lot of beeping and relay clicking.
But after adjusting the sensitivity down. No problem it switches over to the 120Volt generator supplied power and charges the battery and all is well. The router, Cable modem, Data switch, and Access point all never know the difference.
James K0UA
It would recognize that 120 volts was present then start to switch over to 120 power, but first it does a diagnostic routine, it would fail the diagnostics, (this takes about 3 or 4 seconds ) and then switch back to battery power, then start to switch back to 120 volt and over and over and over, so it never charges the battery back up, and never runs on the 120 volt supplied by the generator and just a lot of beeping and relay clicking.
But after adjusting the sensitivity down. No problem it switches over to the 120Volt generator supplied power and charges the battery and all is well. The router, Cable modem, Data switch, and Access point all never know the difference.
James K0UA
BobRip
Elite Member
62hz is not normally a problem and will drop as load increases. I thought it might be a problem for just the UPS. It sounds like others know more than I do about this.
Craig Clayton
Platinum Member
Here is another story about small UPS's. We have lots of these in the plant as backup to keep special instruments powered. These are 350 VA at 120 VAC make ??. The monitoring circuit was designed by a electrical designer. They choose a transistor on the 9 pin sub connector to alarm when the battery was at the failing level of charge.
After several years of service we started to get battery failure alarms. I swapped out the batteries at a 50-50 success rate. I read the software of the UPS and they were charging just fine.
I called Emerson Electric in the US and spoke to the engineering deptment and they said I did not know what I was talking about.
A year pasted and the battery problems were still 50-50 so I bought more of the same model UPS's.
My boss called Emerson Electric and he had a enginering background and Emerson said he was also wrong.
So our plant insisted and 1 UPS was sent to the factory in the US. They tested it for 2 weeks and finally they admitted the monitoring transistor was breaking down and sending a false battery fail status.
I packed up about 30 UPS's to be repaired in the US. That model has been discontiued so we bought another manufactures UPS that would fit the location.
The moral of the story is the transistor came from off shore and was cheap.
Craig Clayton
After several years of service we started to get battery failure alarms. I swapped out the batteries at a 50-50 success rate. I read the software of the UPS and they were charging just fine.
I called Emerson Electric in the US and spoke to the engineering deptment and they said I did not know what I was talking about.
A year pasted and the battery problems were still 50-50 so I bought more of the same model UPS's.
My boss called Emerson Electric and he had a enginering background and Emerson said he was also wrong.
So our plant insisted and 1 UPS was sent to the factory in the US. They tested it for 2 weeks and finally they admitted the monitoring transistor was breaking down and sending a false battery fail status.
I packed up about 30 UPS's to be repaired in the US. That model has been discontiued so we bought another manufactures UPS that would fit the location.
The moral of the story is the transistor came from off shore and was cheap.
Craig Clayton
yelbike
Veteran Member
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Craig you gotta love being to told you don't know what your talking about!!
Some people are so arrogant. At least you got the last laugh.:laughing:
Some people are so arrogant. At least you got the last laugh.:laughing:
pilot-werx
Gold Member
In my manufacturing plant all of my PLCs are connected to UPSs to keep the processors running. Believe it or not I have had the best luck with the ones you can get at Walmart...
Craig Clayton
Platinum Member
To pilot-werx
Our UPS,s supply PLC,s and PID controllers. The UPS,s worked fine it was the internal circuit transistor that monitored the battery status that put a false DI into the PLC of (battery failure).
I kept them working by disconnecting the 9 pin D sub when they were being BAD.
Craig Clayton
Our UPS,s supply PLC,s and PID controllers. The UPS,s worked fine it was the internal circuit transistor that monitored the battery status that put a false DI into the PLC of (battery failure).
I kept them working by disconnecting the 9 pin D sub when they were being BAD.
Craig Clayton
sandman2234
Super Member
- Joined
- Dec 4, 2005
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- 6,089
- Location
- Jacksonville, Florida
- Tractor
- JD2555 and a few Allis Chalmers and now one Kubota
I was talking about going around the UPS and hooking straight to the battery of it, to charge the battery. Battery probably doesn't care what or how clean the power is, just stores it. Then the UPS can convert it to 120v and you continue to run.
David from jax
