Technical data

Hardware Information
8-37
SIMATIC Box PC 620 Manual
C79000-G7076-C639-02
PS Connection for Hard Disk (X25)
The power supply of the 3.5” hard disk is effected via this connection.
Pin no. Signal Name Remark
1 P12V +12 V
2 GND GND
3 GND GND
4 P5V +5 V
Connection for CPU Fan and Device Fan (X28)
The CPU fan and the device fan are connected via these two connections.
Pin no. Signal Name Remark
1 12V thermostat-
controlled
2 0 V fan, switched
Connection for Backup Battery (X42)
The battery for the standby supply to the CMOS RAM is connected to this
connection. A 3.6 V lithium battery with a capacity of 750 mAh is used.
Pin no. Signal Name Remark
1 + Positive pole
2 - Negative pole