7 power supply with 85w power output (ac and dc) – Siemens Simatic 620 User Manual
Page 168
Hardware Information
7-36
SIMATIC Box PC 620 Manual
A5E00131465-01
7.7
Power Supply with 85W power output (AC and DC)
Technical Specifications
Voltage
Max. Current
Voltage Stability
+ 12 V
1.7 A
" 4 %
– 12 V
0.2 A
" 6 %
+ 5 V
10 A
" 3 %
+ 3.3 V
4.2 A
" 5 %
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
20 ms minimum (AC), 7 ms minimum (DC)
T3:
save time
1 ms mimimum
voltage
Figure 7-11 Time Characteristics of the Power Good Signal