Normal High Warning High Critical Shutdown

Product Overview

•Power supply shutdown—An out-of-tolerance voltage, current, or temperature condition was detected within the power supply and it was shut down (or a shutdown is imminent). All DC power remains disabled until the operator toggles the power switch and corrects the problem that caused the shutdown (if any). This condition typically occurs because of one of the following reasons:

–Loss of AC input power (the power source failed).

–Power supply detected an overvoltage, overcurrent, AC or DC undervoltage, or overtemperature condition within the power supply. This includes operator shutdown by turning off the system power switch, which the power supply interprets as an undervoltage condition.

–The chassis interface detected an overtemperature condition within the system.

•Blower failure—The blower impeller has stopped turning. A warning message is displayed on the console, and the system will continue operating until it shuts itself down due to overheating.

Table 2	Typical Processor-Monitored Temperature Thresholds

Parameter		Normal		High Warning			High Critical		Shutdown

Inlet		10–40 C		44 C			50 C		–

Hotpoint		10–40 C		54 C			60 C		–

Exhaust		10–40 C		–			–		–

Processors		–		–			–		70 C

Power supply		–		–			–		75 C

Restart		40 C		–			–		–

Table 3	Typical Power Supply-Monitored DC-Voltage Thresholds

Parameter			Normal		Low Critical	Low Warning		High Warning		High Critical

+5V			4.74 to 5.26		4.49	4.74		5.25		5.52

+12V			10.20 to 13.8		10.76	11.37		12.64		13.24

–12V			–10.20 to		–10.15	–10.76		–13.25		–13.86
			–13.80

+24V			20.00 to 28.00		19.06	21.51		28.87		26.51

If the air temperature exceeds a defined threshold, the system processor displays warning messages on the console terminal and, if the temperature exceeds the shutdown threshold, it shuts down the system. The system stores the present parameter measurements for both temperature and DC voltage in NVRAM, so that you can retrieve it later as a report of the last shutdown parameters.

The power supplies monitor internal power supply temperature and voltages. A power supply is either within tolerance (Normal) or out of tolerance (Critical or Warning levels), as shown in Table 3. If an internal power supply temperature or voltage reaches a critical level, the power supply shuts down without any interaction with the system processor.

If the system detects that AC or DC input power is dropping, but it is able to recover before the power supply shuts down, it logs the event as an intermittent power failure. The reporting functions display the cumulative number of intermittent power failures logged since the last power up.

Upgrading the 1200-Watt, AC-Input Power Supplies in the Cisco 7513

	OL-6324-01	9

Cisco Systems 7513 manual Normal High Warning High Critical Shutdown

Normal

High Warning

High Critical

Shutdown

Normal

Low Critical

Low Warning

High Warning

High Critical