On 12/06/2013 10:57 PM, Kris Jordan wrote: > [...]> (*) Some UPS's do provide extra options to determine when they will > restore power to load.That would be a nice feature. Anyway, it is a strange thing that I can set the waiting time for power to be restored if main power comes back before offdelay has elapsed, but the UPS ignores this setting if main power comes back after offdelay has elapsed. To me it seems intuitive to restore power only after ondelay has elapsed no matter if main power has come back before or after offdelay. I can see that my UPS (MGE Protection Center 675) has a parameter ups.timer.start (currently holding the strange value of -10). Any idea if this could help and how this parameter can be changed? Regards: Angel
Angel Tsankov wrote, On 12/24/2013 1:22 AM:> On 12/06/2013 10:57 PM, Kris Jordan wrote: > > [...] >> (*) Some UPS's do provide extra options to determine when they will >> restore power to load. > > That would be a nice feature. > > Anyway, it is a strange thing that I can set the waiting time for > power to be restored if main power comes back before offdelay has > elapsed, but the UPS ignores this setting if main power comes back > after offdelay has elapsed. To me it seems intuitive to restore power > only after ondelay has elapsed no matter if main power has come back > before or after offdelay.Depends a lot on the UPS's firmware. Cheap units tend to just turn on instantly no matter what, and the better ones tend to follow your directions. I still need to test the reboot functionality on my 5PX, but if it's anything like the Evo850 (also MGE), it should behave. I'll let you know.> I can see that my UPS (MGE Protection Center 675) has a parameter > ups.timer.start (currently holding the strange value of -10). Any idea > if this could help and how this parameter can be changed?in upsrw? ups.timer.start --> Time before the load will be started (seconds). Maybe it counts down after using load.on.delay? Mine don't have the value in upsrw so it can't be set. The Eaton 5PX (which is part MGE) I have here does have one return condition, to return power only if the battery is charged to a certain percentage, battery.charge.restart in upsrw. The only UPS I've had so far that could also (always) wait a bit after power return were APC Smart-UPS's.
On 12/25/2013 12:16 AM, Kris Jordan wrote:> Angel Tsankov wrote, On 12/24/2013 1:22 AM:[...]>> I can see that my UPS (MGE Protection Center 675) has a parameter >> ups.timer.start (currently holding the strange value of -10). Any idea >> if this could help and how this parameter can be changed? > > in upsrw?In upsc only. Here's the complete output: battery.charge: 100 battery.charge.low: 30 battery.runtime: 2281 battery.type: PbAc device.mfr: MGE UPS SYSTEMS device.model: Protection Center 675 device.serial: 1HKG25025 device.type: ups driver.name: usbhid-ups driver.parameter.offdelay: 30 driver.parameter.ondelay: 60 driver.parameter.pollfreq: 30 driver.parameter.pollinterval: 2 driver.parameter.port: auto driver.version: 2.4.3 driver.version.data: MGE HID 1.18 driver.version.internal: 0.34 input.transfer.high: 264 input.transfer.low: 184 outlet.1.desc: PowerShare Outlet 1 outlet.1.id: 2 outlet.1.status: on outlet.1.switchable: no outlet.desc: Main Outlet outlet.id: 1 outlet.switchable: no output.frequency.nominal: 50 output.voltage: 230.0 output.voltage.nominal: 230 ups.beeper.status: enabled ups.delay.shutdown: 30 ups.delay.start: 60 ups.load: 12 ups.mfr: MGE UPS SYSTEMS ups.model: Protection Center 675 ups.power.nominal: 670 ups.productid: ffff ups.serial: 1HKG25025 ups.status: OL CHRG ups.timer.shutdown: -1 ups.timer.start: -10 ups.vendorid: 0463 And here's the output from upsrw: [battery.charge.low] Remaining battery level when UPS switches to LB (percent) Type: STRING Value: 30 [input.transfer.high] High voltage transfer point (V) Type: STRING Value: 264 [input.transfer.low] Low voltage transfer point (V) Type: STRING Value: 184 [outlet.1.desc] Outlet description Type: STRING Value: PowerShare Outlet 1 [outlet.desc] Outlet description Type: STRING Value: Main Outlet [output.voltage.nominal] Nominal output voltage (V) Type: ENUM Option: "220" Option: "230" SELECTED Option: "240" [ups.delay.shutdown] Interval to wait after shutdown with delay command (seconds) Type: STRING Value: 30 [ups.delay.start] Interval to wait before (re)starting the load (seconds) Type: STRING Value: 60> ups.timer.start --> Time before the load will be started (seconds). > Maybe it counts down after using load.on.delay?What did you mean by "load.on.delay"?> Mine don't have the value in upsrw so it can't be set. The Eaton 5PX > (which is part MGE) I have here does have one return condition, to > return power only if the battery is charged to a certain percentage, > battery.charge.restart in upsrw. > > The only UPS I've had so far that could also (always) wait a bit after > power return were APC Smart-UPS's.Thanks for this extra info.
Kris Jordan wrote, On 12/24/2013 2:16 PM:> Angel Tsankov wrote, On 12/24/2013 1:22 AM: >> On 12/06/2013 10:57 PM, Kris Jordan wrote: >> > [...] >>> (*) Some UPS's do provide extra options to determine when they will >>> restore power to load. >> >> That would be a nice feature. >> >> Anyway, it is a strange thing that I can set the waiting time for >> power to be restored if main power comes back before offdelay has >> elapsed, but the UPS ignores this setting if main power comes back >> after offdelay has elapsed. To me it seems intuitive to restore power >> only after ondelay has elapsed no matter if main power has come back >> before or after offdelay. > > Depends a lot on the UPS's firmware. Cheap units tend to just turn on > instantly no matter what, and the better ones tend to follow your > directions. I still need to test the reboot functionality on my 5PX, > but if it's anything like the Evo850 (also MGE), it should behave. > I'll let you know.Just tested the 5PX. I thought the Evo850 waited, but I must have only tested the case of AC being restored before offdelay had elapsed. So it's just like what the doc says, ondelay is only considered if AC is restored before offdelay elapses. Not sure why they don't at least have a few seconds delay to make sure the AC is going to be stable before restoring power to the load. I kept an eye on the ups.timer values after sending shutdown.return, they didn't change. Not a big deal though.