Detailed descriptions
16.1 Motherboard
SIMATIC Rack PC 847B
140
Operating Instructions, 06/2008, A5E02203168-01
Pin assignment of the HDD fan interface, X131
Pin no.
Short name
Meaning
Input / output
1
GND
Ground
-
2
VCC
5 V to +12 V, regulated
Output
3
Tacho signal
Monitoring signal
Input
4
-
Reserved
-
Pin assignment of the front fan interface, X132
Pin no.
Short name
Meaning
Input / output
1
GND
Ground
-
2
VCC
+12 V fused
Output
3
Tacho signal
Monitoring signal
Input
4
PWM
Speed setting
Output
Содержание SIMATIC PC 847B
Страница 208: ...Appendix A 4 Retrofitting instructions SIMATIC Rack PC 847B 208 Operating Instructions 06 2008 A5E02203168 01 ...
Страница 216: ...List of abbreviations C 1 Abbreviations SIMATIC Rack PC 847B 216 Operating Instructions 06 2008 A5E02203168 01 ...
Страница 232: ...Index SIMATIC Rack PC 847B 232 Operating Instructions 06 2008 A5E02203168 01 ...