Siemens PC 670 manual Power supply AC and DC, Technical Data, Voltage, Power-Good-Signal

Release 04/02 Hardware Information

7.7Power 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

Power Good signal

Input voltage

+5 V secondary voltage

POWER GOOD

		T1		T2	T3
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

Panel PC 670 Computing Unit, Equipment Manual 7-37