Intel SC5650BCDP User Manual
Cooling Sub-System
Intel
®
Server System SC5650BCDP TPS
Intel order number: E80367-002
Revision 1.5
30
4. Cooling Sub-System
4.1 Fan Configuration
The cooling sub-system of the Intel
®
Server System SC5650BCDP consists of one 120mm
chassis fan, one 120mm PCI fan and one 92mm drive bay fan. The 4-wire chassis fan provides
cooling at the rear of the chassis by drawing fresh air into the chassis from the front and
exhausting warm air out the system. This fan is PWM controlled. The server board S5500BC
monitors several temperature sensors and adjusts the duty cycle of the PWM signal to drive the
fan at the appropriate speed. The 4-wire PCI fan behind the PCI card guide provides cooling by
drawing fresh air from the front of the chassis through PCI fan guide and exhausting it into the
PCI bay area. The 4-wire 92-mm drive bay fan provides additional cooling to the drive bay by
drawing fresh air from the front of the chassis through drive bay area and exhausting warm air
out the bay area.
cooling at the rear of the chassis by drawing fresh air into the chassis from the front and
exhausting warm air out the system. This fan is PWM controlled. The server board S5500BC
monitors several temperature sensors and adjusts the duty cycle of the PWM signal to drive the
fan at the appropriate speed. The 4-wire PCI fan behind the PCI card guide provides cooling by
drawing fresh air from the front of the chassis through PCI fan guide and exhausting it into the
PCI bay area. The 4-wire 92-mm drive bay fan provides additional cooling to the drive bay by
drawing fresh air from the front of the chassis through drive bay area and exhausting warm air
out the bay area.
Removal and insertion of the two 120-mm fans or 92-mm fan can be done without tools. The
power supply internal fan assists in drawing air through the peripheral bay area, through the
power supply and exhausting it out the rear of the system. The Intel
power supply internal fan assists in drawing air through the peripheral bay area, through the
power supply and exhausting it out the rear of the system. The Intel
®
Server System
SC5650BCDP is optimized for the Intel
®
server board S5500BC that using an active CPU
heatsink solution.
If an optional hot-swap drive bay is installed, a 4-wire 92-mm fan is included with the mounting
bracket kit for installation onto the drive bay. This fan has a PWM circuit that allows the server
board to control the fan speed based on sensor readings of ambient temperature.
bracket kit for installation onto the drive bay. This fan has a PWM circuit that allows the server
board to control the fan speed based on sensor readings of ambient temperature.
The front panel of the Intel
®
Server System SC5650BCDP provides a TMP75 temperature
sensor for BMC control. The Intel
®
Server Board S5500BC BMC controller may use the TMP75
sensor to adjust fan speeds according to air intake temperatures. Refer to the Intel
®
Server
Board S5500BC Technical Product Specification
for configuring information.
4.2 Server Board Fan Control
The fans provided in the Intel
®
Server System SC5650BCDP contain a tachometer signal that
can be monitored by the server management subsystem for the Intel
®
Server Boards S5500BC.
See Intel
®
Server Boards S5500BC Technical Product Specification for details on how this
feature works.
4.3 Cooling Solution
Air should flow through the system from front to back, as indicated by the arrows in the following
figure.
figure.