1-27
Cisco 7204 Installation and Configuration Guide
OL-5101-02
Chapter 1 Product Overview
Functional Overview
Table 1-9
lists the DC power thresholds for the normal, warning, and critical (power supply-monitored)
levels.
•
Normal—All monitored parameters are within normal tolerances.
•
Warning—The system has exceeded a specified threshold. The system will continue to operate, but
operator action is recommended to bring the system back to a normal state.
•
Critical—An out-of-tolerance temperature or voltage condition exists. The system will continue to
operate; however, the system is approaching shutdown. Immediate operator action is required.
•
Shutdown—The processor has detected a temperature condition that could result in physical damage
to system components and has disabled DC power to all internal components. Requires immediate
operator action. All DC power will remain disabled until you toggle the power switch. Before any
shutdown, the system logs the status of monitored parameters in NVRAM so you can retrieve it later
to help determine the cause of the problem.
•
Power supply shutdown—The power supply detected an internal out-of-tolerance overvoltage,
overcurrent, or temperature condition and shut itself down. All DC power will remain disabled until
you toggle the power switch.
If the air temperature exceeds a defined threshold, the system controller 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 them 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 or out of tolerance (Critical), as shown in
Table 1-9
. If an internal power supply
temperature or voltage reaches a critical level, the power supply shuts down without any interaction with
the system processor.
Chassis outlet 1
109°F (43°C)
127°F (53°C)
136°F (58°C)
Chassis outlet 2
167°F (75°C)
167°F (75°C)
–
Chassis outlet 3
131°F (55°C)
149°F (65°C)
158°F (70°C)
Table 1-8
Typical Processor-Monitored Temperature Thresholds (NPE-100, NPE-150, and NPE-200)
(continued)
Parameter
High Warning
High Critical
Shutdown
Table 1-9
Typical Power Supply-Monitored DC-Voltage Thresholds
Parameter
Low Critical
Low Warning
High Warning
High Critical
+3.45V
+3.26V
+3.34V
+3.55V
+3.63V
+5.15V
+4.86V
+4.99V
+5.31V
+5.43V
+12.15V
+11.39V
+11.67
+12.62V
+12.91V
–11.95V
–9.52V
–10.73
–13.16V
–14.38V
