System Fan Headers; Bmc System Fan; Table 32 Jp3/Jp4 - Bmc Fan Voltage Configuration; Table 33 X30/X31 Pinout Description - Congatec conga-HPC/EVAL-Server User Manual

4.8

System Fan Headers

The conga-HPC/EVAL-Server provides the following headers for connecting a 3-pin or 4-pin fan:
• two system fan headers via the BMC (X30 and X31)
• one system fan header via the module (X32)
4.8.1

BMC System Fan

The conga-HPC/EVAL-Server provides two 4-pin system fan headers (X30/X31) via the BMC. The BMC controls the speed of the system fans.
Use jumper:
• JP3 to set the fan's supply voltage on header X30
• JP4 to set the fan's supply voltage on header X31
Table 32 JP3/JP4 - BMC Fan Voltage Configuration
Pin Signal
1-2 12 V supply voltage (default)
2-3 5 V supply voltage
Table 33 X30/X31 Pinout Description
Pin Signal
1 GND
2 +12 VDC
3 FAN_TACHOIN
4 FAN_CTRL
Note
1. The connector and pinout complies with 4-Wire Pulse PWM Controlled Fans Specification, Revision 1.3
2. FAN_TACHOIN fan output shall provide two pulses per revolution.
3. The fan must pull up the FAN_CTRL signal to high logic level.
4. Recommended maximum power rating for the fan is 9 W
Connector Type
JP3, JP4: 2.54 mm, 2-pin jumper
X36, X38: 2.54 mm, 4-pin grid fan connector
Copyright © 2022 congatec AG HEVAm100
JP3/JP4
1 2 3
X30/X31
1 2 3 4
40/54