Technical data

Hardware Information
6-42
SIMATIC Panel PC 670 Computing Unit Equipment Manual
Edition 12/01
6.11 AC and DC Power Supplies
Technical Data
Voltage Max. current Voltage stability
+12 V 1.7 A " 4%
–12 V 0.2 A " 6%
+ 5 V 10.5 A " 3%
–5 V 0.05 A " 5%
+3.3 V 4.2 A " 5%
+ 18 V (electrically isolated) 0.05 A " 5%
Voltage
AC DC
Input voltage 120/230 V AC, " 10 % 24 V DC
Frequency 47 – 63 Hz –
Power consumption v 120 Watt
Stored energy time upon
power failure
20 ms 20 ms at rated voltage
Output power 84 W
Degree of protection IP20 (when installed)
Protection class VDE 0106
Approvals EN 60950/IEC 950, UL 1950
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 16.6 ms minimum
T3: save time 1 ms minimum
Figure 6-2 Time Characteristics of the Power Good Signal