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Energy Efficiency Configuration Issues

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DCIM_Support
Picard DCIM_Support
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‎2020-07-05 08:29 PM
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‎2020-07-05 08:29 PM

Energy Efficiency Configuration Issues

This question was originally posted on DCIM Support by Mohamed Abdulla on 2019-07-08


Hi,

 

I'm facing several issues with the Energy Efficiency configuration as follows:

  • After finalizing the system configuration, scripts, ... etc. I'm getting a very high negative value in the power system percentage, and a very large cooling system percentage (more than 200%), with the PUE being very low (way lower than the predicted value).

  • In the redundancy field under the Energy Efficiency property, does it have to be N for all equipments?  Does this impact the PUE or the subsystem consumption?

  • In the subsystem cost section in EE dashboard, Whenever I change the graph settings (price, currency, & CO2 emission), they always turn back to the default values after sometime.

  • I'm aware that switch-gears must only connect to either PDUs or UPSs, but what about in-between (input/output) panels or DBs.  Does it matter if they are PDUs or generic power panels?  Also, can they have identical scripts to the load (i.e. UPS)?

 

Thank you for the support.

 

Regards,

Mohamed

(CID:146670771)

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‎2020-07-05 08:29 PM

Re: Energy Efficiency Configuration Issues

This answer was originally posted on DCIM Support by Jef Faridi on 2019-10-11


Hi Mohamed,

Sorry for the very late response. 

I guess (only guessing) you might have minus/negative sign somewhere in the configuration/scripts leading to a negative PUE. PUE values are positive and basically depends on the configuration itself.

The N redundancy and other settings also depends on the setup, some of the settings may not have a clear/visible impact in the final displayed PUE.

And the "Subsystem Cost", this may require detail investigation of the setup and details/info on what is expected to be seen.

I think the power path in EE is from Swichgear -> UPS -> PDU
PDU -> UPS is not supported.
I would suggest using PDU and not generic power panels, since they may have different behavior in the setup.
I think usually up to user to define his/her configuration & scripts and there is no restriction not having the same/similar scripts on different devices.

Kind regards

(CID:149784403)

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‎2020-07-05 08:29 PM

Re: Energy Efficiency Configuration Issues

This comment was originally posted on DCIM Support by Greg Sterling on 2019-10-11


Hello Mohamed, Adding to Jef's response. You will need to start the power path with a switchgear device which is configured to feed the UPS's or start of your power path. 

Based on your posting, I assume you have already defined an energy system in the EE view in the desktop client. I also assume you have assigned scripts to the items in the energy system? So your energy system view may look something like this simple example below?

Jef mentioned its possible one of the scripts you're using is returning a negative value. You should be able to double click each of the scripts in the lower left side pane and click the "evaluate" button (highlighted in yellow below) to force the script to execute immediately so you can see the result in the evaluated pane.

The values should be positive. If you see a negative value then you'd need to investigate why the sensor or items queried in the script are returning negative numbers.

Regards

Greg Sterling

(CID:149784456)

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‎2020-07-05 08:29 PM

Re: Energy Efficiency Configuration Issues

This comment was originally posted on DCIM Support by Mohamed Abdulla on 2019-10-13


Hi Jef & Greg, Thank you both for your replies.

Yes, I've already defined an energy system and assigned a script to each item.

I've gone through all the scripts and didn't find any negative value returned.

The only thing I'm suspecting is that I have a mixture of PDUs and power panels, can this be the reason ? and should it have a significant impact on the result ?

However, I've already submitted a ticket to further investigate those issues.

Regards,

Mohamed

(CID:149784542)

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‎2020-07-05 08:30 PM

🔒 Closed

This question is closed for comments. You're welcome to start a new topic if you have further comments on this issue.

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