Hardware Information
Release 11/02
7-34
SIMATIC Panel PC 870 Computing Unit, Equipment Manual
7.8
DC Power Supply
Technical Data
Input voltage
24 VDC (20.4 - 28.8 VDC)
Power consumption
v
265 W
Stored energy time upon power failure
1 ms at rated voltage
Maximum continual power output
180 W
Degree of protection
IP20 (when installed)
Protection class
VDE 0106
Output voltage
Voltage
Max. current
Voltage stability
+12 V
4.4 A
"
4 %
–12 V
0.5 A
"
6%
+5 V
22 A *
"
3 %
–5 V
0.5 A
"
5 %
+3.3 V
16 A *
"
3 %
+ 5 V aux
1 A
"
5 %
* The total power of the +5V and +3.3V voltages may amount to max. 140 W
Power-Good-Signal
T1
T2
T3
Power Good signal
Input voltage
+5 V secondary voltage
POWER GOOD
T1:
preset time
100 to 500 ms
T2:
hold-up time
not specified
T3:
save time
1 ms minimum
voltage
Figure 7-4
Time Characteristics of the Power Good Signal
Summary of Contents for Simatic PC Panel PC 870
Page 4: ...Chapter For your notes ...
Page 12: ...Contents Release 11 02 xii SIMATIC Panel PC 870 Computing Unit Equipment Manual ...
Page 94: ...Fault Diagnosis Release 11 02 6 10 SIMATIC Panel PC 870 Computing Unit Equipment Manual ...
Page 130: ...Hardware Information Release 11 02 7 36 SIMATIC Panel PC 870 Computing Unit Equipment Manual ...
Page 154: ...Index Release 11 02 Index 4 SIMATIC Panel PC 870 Computing Unit Equipment Manual ...
