Lucent Technologies 7820-0802-003 manual Example of configuring thermal controls

Configuring the Thermal Profile for Fan Tray Operations (APX 8000)

Overview of the Thermal profile for fan tray operations

Parameter	Specifies
Operation-Mode	Mode of operation in which the fan tray runs. When the
	parameter is set to full-speed-only, the fans in the fan
	tray operate at full speed at all times. (This is the default mode.)
	When set to lownoise-speed-only, the fans operate at the
	low noise speed (as specified in the Fantray-Lownoise-RPM
	setting) at all times. When the parameter is set to
	auto-regulationmode, the fan speeds are controlled
	dynamically on the basis of temperature. In
	auto-regulationmode, the fans run at low noise speed
	when the system starts up. The system monitors the unit
	temperature, and when it reaches a high-temperature threshold
	(as specified in the High-Temperature-Trigger setting), it
	switches the fans to full speed and logs a message. When the
	unit temperature falls below the low-temperature threshold (as
	specified in the Low-Temperature-Trigger setting), the system
	switches the fans back to low noise speed.
Low-Temperature-Trigger	Low-temperature threshold setting, from 0 to 60 degrees
	Celsius (32 to 140 degrees Fahrenheit). If the fan tray is in
	auto-regulation mode and this threshold is crossed, the system
	switches the fans to low noise speed and logs a message. If you
	specify a higher value than the High-Temperature-Trigger
	setting, the system displays an error message when you attempt
	to write the profile.
High-Temperature-Trigger	High-temperature threshold setting, from 0 to 60 degrees
	Celsius (32 to 140 degrees Fahrenheit). If the fan tray is in
	auto-regulation mode and this threshold is crossed, the system
	switches the fans to full speed and logs a message. If you
	specify a lower value than the Low-Temperature-Trigger
	setting, the system displays an error message when you attempt
	to write the profile.
Alarm-Temperature-Trigger	Temperature threshold setting, from 0 to 60 degrees Celsius (32
	to 140 degrees Fahrenheit). If this threshold is crossed, the
	system generates an Alarm event, the Alarm Relay on the shelf
	controller is turned on, and the Alarm status light on the front
	panel of the fan tray illuminates.

Example of configuring thermal controls

The commands in the following example show how to configure the fan tray to run the fans at 2500 RPM until the unit reaches a temperature of 37 degrees Celsius (98.6 degrees Fahrenheit), at which time the system switches the fans to full speed and maintains that setting until the unit temperature drops below 30 degrees Celsius (86 degrees Fahrenheit). If the system ever reaches a temperature of 50 degrees Celsius (122 degrees Fahrenheit), the system triggers alarms.

admin> read thermal

THERMAL read

admin> set operation-mode = auto-regulation

3-2 APX 8000/MAX TNT/DSLTNT Physical Interface Configuration Guide