Technical Product Specification

Chassis Cooling Intel
®
Server Chassis P4000S Family TPS
Intel order number G22850-006 Revision 1.5
72
The Air duct for Intel
®
Server Board S2400SC and S1400FP must be installed to keep the
system operating within supported maximum thermal limits.
Refer to the baseboard documentation for additional details on thermal and configuration
requirements.
3.3 Fan Control
The fans provided in the Intel
®
Server Chassis P4000S Family contains a tachometer signal that
can be monitored by the server management subsystem of the Intel
®
Server Boards for RPM
(Revolutions per Minute) detection.
The server board monitors several temperature sensors and adjusts the PWM (Pulse Width
Modulated) signal to drive the fan at the appropriate speed.
The front panel of the chassis has a digital temperature sensor connected to the server board
through the front panel’s bus. The server board firmware adjusts the fan speed based on the
front panel intake temperature and processor temperatures.
Refer to the baseboard documentation for additional details on how fan control is implemented.
3.4 Fan Header Connector Descriptions
All system fan headers support pulse width modulated (PWM) fans for cooling the processors in the
chassis. PWM fans have an improved RPM range (20% to 100% rated fan speed) when compared
to voltage controlled fans.
The fixed chassis fans are a 4-wire/4-pin style designed to plug into 4-pin or 6-pin SSI Fan headers.
When plugged into a 6-pin header, only the first four signals are used (Pwr, Gnd, Tach, and PWM).