This question was originally posted on DCIM Support by Mohamed Abdulla on 2019-07-08
I'm facing several issues with the Energy Efficiency configuration as follows:
Thank you for the support.
This answer was originally posted on DCIM Support by Jef Faridi on 2019-10-11
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.
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.
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.
Discuss challenges in energy and automation with 30,000+ experts and peers.
Find answers in 10,000+ support articles to help solve your product and business challenges.
Find peer based solutions to your questions. Provide answers for fellow community members!