Hardware Information
7-35
SIMATIC Rack PC 840 Manual
A5E00104826-03
7.9
DC Power Supply
Output Voltages
Voltage
Max. Current
Voltage Stability
+ 12 V
8 A
"
4 %
– 12 V
0.5 A
"
6 %
+ 5 V
30 A
"
3 %
– 5 V
0.5 A
"
5 %
+ 3.3 V
20 A
"
5 %
+ 18 V aux
0.08 A
"
5 %
* The total power comsumption of the +5V and +3.3V voltages may not exceed 160 W.
Power-Good-Signal
T1
T2
T3
Power–Good Signal:
Input voltage
+5 V secondary
POWER GOOD
T1:
preset time
100 ... 500 ms
T2:
hold-up time
Not specified
T3:
save time
1 ms mimimum
voltage
Figure 7-13 Time Characteristics of the Power Good Signal
Summary of Contents for SIMATIC Box PC 840
Page 8: ...Preface viii SIMATIC Rack PC 840 Manual A5E00104826 03 ...
Page 179: ...B 1 SIMATIC Rack PC 840 Manual A5E00104826 03 Technical Specifications B ...
Page 208: ...Glossary Glossary 22 SIMATIC Rack PC 840 Manual A5E00104826 03 ...
Page 212: ...Index Index 4 SIMATIC Rack PC 840 Manual A5E00104826 03 ...