2 Replies Latest reply: Feb 20, 2012 2:47 AM by mensa RSS

Staggering power-on after a coldstart.

plotkin Member
Currently Being Moderated

We are installing 4 new circuits (3 phase, wye, 208V) and are thinking of using the AP7991 PDU.

One question:
1) On coldstart, is there a way to sequence the power to each outlet such that we do not blow a break if they all turn on at the same time? I have read the docs at (http://www.apcmedia.com/salestools/ASTE-6Z6KAV_R1_EN.pdf) and understand we can set the "Power On Delay", but it was not specifically stated that this delay is used (per outlet) on a coldstart.

My concern is exaberated since one of APS's competitors says that this is not the case- that the APC unit can NOT be setup to stagger power-on after a cold-start. (IE. They are saying that the "Power On Delay" only applies during manual/web interface restarts.)

Some details would be very helpful.

Thank You,

  • 1. Re: Staggering power-on after a coldstart.
    Angela N. =SE= Employee
    Currently Being Moderated
    I believe that you will able to configure what you want under Device Manager->Configuration menu. also, I can tell you that you can schedule reboots of the outlets and set a "Power on delay" for that too if you needed to do a daily reboot or power cycle to the pdu.

    there is also a command line interface that you can set up to possibly run a script to do something like this - i will attach the document on those commands to this post.

    We also have a website, http://testdrive.apc.com, where you can log into a real live switched rack pdu and check out your options there. You can go to the Device Manager tab->Configuration menu inside the pdu and either configure specific outlets or groups of outlets to have a "Power on delay."

    Try logging into with a username of apc and a password of apc and see what you think about what I mentioned. dont forget to check out the attachment on the command line information if you needed to go that route.
  • 2. Re: Staggering power-on after a coldstart.
    mensa Member
    Currently Being Moderated
    I configure that by Device Manager -> Configuration :

    Name Power On Delay Power Off Delay Reboot Duration
    1 Outlet 1 5 Seconds Immediate 15 Seconds
    2 Outlet 2 10 Seconds Immediate 15 Seconds
    3 Outlet 3 15 Seconds Immediate 15 Seconds
    4 Outlet 4 20 Seconds Immediate 15 Seconds
    5 Outlet 5 25 Seconds Immediate 15 Seconds
    6 Outlet 6 30 Seconds Immediate 15 Seconds
    7 Outlet 7 35 Seconds Immediate 15 Seconds
    8 Outlet 8 40 Seconds Immediate 15 Seconds

    After a coldstart, each outlet start every 5 secondes...

    Message was edited by: mensa

    Message was edited by: mensa

More Like This

  • Retrieving data ...


  • Correct Answers - 8 points
  • Helpful Answers - 4 points