System Current And Voltage Values - Siemens SIMATIC PCS 7 OSx Hardware Manual

Test Voltage
Sub-System
System Unit 115 V RMS
S7–200 212 CPU 115 V RMS
115 V RMS
21 Color Monitor
115 V RMS
17 Color Monitor
Optical Disk Drive 115 V RMS
* Peak Power-on Current, exponentially decreases from the listed Peak Power-on Current to the average
Peak Current in approximately five cycles of line power.
SIMATIC PCS 7 OSx 4.0.0 Hardware (PA RISC)
To determine the size of the Uninterruptible Power Supply (UPS), use the
Average Volt Amperes Consumed as a guide for sizing your back-up time.
For example, when you use the computer with the 21-inch color monitor and
a required hold-up time of one hour, the minimum rating requirement is
(115V * ( 4.48A + 1.2A)) * 1 Hr = 653VA HR. If you need to turn the system
on using the UPS with the Mains AC not available, then pay particular
attention to the Peak Power-on (or Inrush) Current. On some systems, this
value can be up to ten times as great as steady-state current. Size your UPS
accordingly. Table C-1
system unit, and for the 17-inch and 21-inch color monitors.
If you install a printer and want it powered through the UPS, ensure that
you use appropriate values. Use a 2 KVA UPS for a complete single-station
system. A larger supply can be rewired, depending on the type of printer
you install.
Table C-1 System Current and Voltage Values
Current,
(60HZ) Average RMS
1.97 A RMS
0.034 A RMS
0.820 A RMS
0.910 A RMS
0.17 A RMS
shows system current and voltage values for the
Peak Power-on Typical Peak
*
Current
4.48 Amperes 4.48 Amperes
1.0 Ampere 0.05 Amperes
35.0 Amperes 1.2 Amperes
30.0 Amperes 1.9 Amperes
1.0 Ampere 0.24 Amperes
Uninterruptible Power Supply
Average Power
Current Consumed, Watts
145.0 Watts
4 Watts (CPU only)
75.0 Watts
80.0 Watts
20.5 Watts
C-3