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Conference netcad::hub_mgnt

Title:DEChub/HUBwatch/PROBEwatch CONFERENCE
Notice:Firmware -2, Doc -3, Power -4, HW kits -5, firm load -6&7
Moderator:NETCAD::COLELLADT
Created:Wed Nov 13 1991
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:4455
Total number of notes:16761

1567.0. "How are overtemp conditions handled by the DEChub 9090?" by STRWRS::KOCH_P (It never hurts to ask...) Thu Oct 13 1994 10:46

    
    I met a potential customer yesterday. They wanted to know how overtemp
    siutations are handled by the DEChub 900? Is this an alarmable
    condition within HUBwatch? How does it shut itself down when an
    overtemp situation occurs? Does is shut down modules or does it shut
    itself off completely?
T.RTitleUserPersonal
Name		DateLines
1567.1The modules shut themselves off.NETCAD::GALLAGHERMon Oct 17 1994 10:0421
Overtemp protection is provided on most DEChub900 MAX modules.
When installed in the DEChub900, modules notify the Hub Manager
when their temperature reaches a danger zone - termed the "yellow
zone".  The Hub Manager displays the temp-yellow condition on the
LCD display.  If the module's temperature reaches a dangerous level,
termed the "red zone" it notifies the Hub Manager, and shuts itself
off.  Other modules are *not* affected.

When standalone, the modules just shut themselves off if they get
too hot.

I'm not sure what the temperature ratings are for the yellow and red
zones. 

In the next version of the Management Agent Module users can configure 
the Hub Manager to send SNMP traps when over-temp conditions arise.

I don't know how HUBwatch represents the over-temp conditions.

						-Shawn
1567.2NETCAD::SLAWRENCEMon Oct 17 1994 11:164
    
    The power supplies too, will shut down if they get too hot (without
    help from the hub manager).
1567.3Overtemperature trip points...NETCAD::THAYERFri Oct 21 1994 10:4214
	The modules and power supplies trip to "yellow zone"
	at approximately 30-35C ambient. Under this condition
	fan speed increases to increase cooling. 

	"Red zone" trips in at about 55-60C ambient.

	There is also fan failure detection. Should one fan
	fail the remaining fans trip to high speed, regardless
	of ambient. An appropriate signal is sent to the Hub
	Manager, allowing for an orderly shutdown and field
	service repair.

				John