• Output current
• Outlet temperature
The controller is expected to meet the following environmental operating conditions:
• Operating Temperature Nominal: 41° to 104° F (5° to 40° C)
• Operating Temperature Short Term: 41° to 122° F (5° to 50° C)
• Operating Humidity Nominal (relative humidity): 5 to 85% non-condensing
• Operating Humidity Short Term: 5 to 90% non-condensing
• Operating Altitude: 0 to 10,000 feet (0 to 3000 meters)
• AC Input Range: 85 to 264 VAC with AC PEM
• DC Input Range: -40.5 to -72 VDC with 48V DC PEM
In addition, the power supplies monitor internal power supply temperatures and voltages. A power supply is
either within tolerance (normal) or out of tolerance (critical). If an internal power supply temperature or voltage
reaches a critical level, the power supply shuts down without any interaction with the system processor.
The environmental monitoring functions use the following levels of status conditions to monitor the system:
• Normal—All monitored parameters are within normal tolerances.
• Warning—The system has exceeded a specified threshold. The system continues 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 continues to operate,
but the system is approaching shutdown. Immediate operator action is required.
• Shutdown—Before any shutdown, the system logs the status of monitored parameters in NVRAM so
that 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 remains disabled until you
toggle the chassis power switch.
Fan Failures
Six internal fans draw cooling air in through the front of the chassis and across internal components to maintain
an acceptable operating temperature. The fans are located at the rear of the chassis. The fans in the controller
are numbered from 0 to 5, right to left.
When the system power is on, all fans should be operational. However, the system continues to operate even
if a fan fails.
Use the show platform hardware slot p2 fan status command to view the status of the fans, for example:
Device# show platform hardware slot p2 fan status
Fan group 1 speed: 60%
Fan 0: Normal
Fan 1: Normal
Fan 2: Normal
Fan 3: Normal
Cisco Catalyst CW9800H1 and CW9800H2 Wireless Controllers Hardware Installation Guide
74
Power Up and Initial Configuration
Fan Failures
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