USB Comms error

[ianj7777_apc]

Hi All

we have an SUA 3000 UPS connected by the rj45 port to a USB port on our HP ML series server running Windows 2012 Server with Powerchute installed

all was good until a couple of weeks ago comms stopped working and a USB error came up

unknown usb device, device descriptor failed

anyone seen this before?

i have tried another USB port, a new cable and even another server, must be the UPS I guess, tried powering down but no joy.

is their a reset for the comms module I can try

thanks for any advice anyone can offer

Ian  Jones

[BillP]

Hello,

What is the exact model number of the SUA 3000 and what cable are you using? The model information will be found on the bar code sticker on the back of the unit. 

Also, have you tried to reset the UPS. See Schneider Electric FAQ FA156611

[ianj7777_apc]

Ok thanks, will check the exact model tomorrow & advise.

I'll try the APC recommended reset as well and report back.

thanks

Ian

[ianj7777_apc]

Hi

model number of the UPS is SUA 3000Q

not had the chance to try the reset yet as it's our main server so I have to pick a convenient time

thanks for your help on this, will update once I've tried it.

[ianj7777_apc]

Hi Bill

I "brain deaded" the UPS this morning and comms are restored, many thanks for your help on this.

One other question, I have another HP Server running Windows Server 2016, how do I control this from Powerchute Business software to enable automated shutdown in the event of a power failure.

Thanks

Ian

[BillP · Accepted solution]

Hi,

You have 2 options. Install a serial port expansion card https://www.se.com/ww/en/product/AP9624_APC/ups-interface-expander-2/ or install a network management card https://www.apc.com/shop/us/en/categories/power/uninterruptible-power-supply-ups-/ups-management/ups... and communicate with both system over the LAN when running PowerChute Network Shutdown.