Siemens PC 670 - Manual (Page 169)

Hardware Information Release 04/02
7-37 Panel PC 670 Computing Unit, Equipment Manual
7.7 Power supply (AC and DC)
Technical Data
Voltage Max. current Voltage stability
+12 V 2.5 A
"
4%
–12 V 0.3 A " 5%
+ 5 V 13.5 A " 3%
+3.3 V 8.5 A " 3%
Voltage
Input voltage 120/230V AC +15%/–20%
24V DC +20%/–15%
Power consumption v 132 Watt
Stored energy time upon power failure 20 ms at rated voltage
Maximum continual power output 105 W
Degree of protection IP20 (when installed)
Protection class VDE 0106
Approvals EN 60950/IEC 950, UL/cUL1950, UL/cUL508
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 7-11 Time Characteristics of the Power Good Signal