[Nut-upsuser] LiebertPSP

Charles Lepple clepple at gmail.com
Sun Nov 20 16:19:13 UTC 2011


On Nov 19, 2011, at 5:23 PM, Tim Gould wrote:

> On 17/11/2011, at 15:24 , Charles Lepple wrote:
> 
>> <LiebertPSP-scalefactor-004a.patch>
> 
> battery.charge: 100
> battery.charge.low: 38
> battery.charge.warning: 38
> battery.type: PbAc
> battery.voltage: 27.300000
> battery.voltage.nominal: 24.000000
> device.mfr: Emerson Network Power
> device.model: LiebertPSA
> device.serial:           
> device.type: ups
> driver.name: usbhid-ups
> driver.parameter.pollfreq: 30
> driver.parameter.pollinterval: 2
> driver.parameter.port: auto
> driver.version: 2.6.2-3318M
> driver.version.data: Belkin HID 0.15
> driver.version.internal: 0.35
> input.frequency: 50.0
> input.voltage: 245.90000
> output.voltage: 246.00000
> ups.load: 3
> ups.mfr: Emerson Network Power
> ups.model: LiebertPSA

I'm wondering if some of the scale factor logic should be keyed off of the "ups.model" field. I just noticed that the original thread was about "LiebertPSP", but yours says "LiebertPSA".

Anyway, I can fix the extra zeros in the voltage readings - we shouldn't pretend that we have that much precision :-)

Next step would be to do a shutdown test. Since we're not sure that the low battery signal will work yet, I would suggest plugging the computers into another power source, and then plugging the UPS into a power strip or other switchable outlet. (Some UPSes do not accurately measure charge state when unplugged from the wall, since the ground floats in that instance. Power strips should not switch the ground wire.)




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