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Hardware descriptions
A.2 Internal Interfaces
SIMATIC IPC677E
132
Operating Instructions, 04/2019, A5E45117996-AA
A.2.3
Supply for the power supply fan (X515)
Pin
Name
Meaning
1
GND
Ground
2
+12 V
Switched voltage supply
3
PG1 FAN_CLK
Clock signal
4
PWM
PWM signal
A.2.4
Supply for the serial ATA drives (X516 - X521)
Pin
Name
Meaning
1
+12 V
Output power supply
2
GND
Ground
3
GND
Ground
4
+5 V
Output power supply
5
+3.3 V
Output power supply