Siemens SIMATIC PCS 7 OSx Hardware Manual

Uninterruptible Power Supply
C-3
SIMATIC PCS 7 OSx 4.0.0 Hardware (PA RISC)
To determine the size of the Uninterruptible Power Supply (UPS), use the
A verage V olt 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
(1 15V * ( 4.48A + 1.2A)) * 1 Hr = 653V A 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 . T able C-1 shows system current and voltage values for the
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 KV A 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 Curr ent and Voltage Values
Sub-System
Test Voltage
(60HZ)
Current,
Average RMS
Peak Power-on
Current
*
Typical Peak
Current
Average Power
Consumed, Watts
System Unit 115 V RMS 1.97 A RMS 4.48 Amperes 4.48 Amperes 145.0 W atts
S7–200 212 CPU 115 V RMS 0.034 A RMS 1.0 Ampere 0.05 Amperes 4 W atts (CPU only)
21 ″ Color Monitor
115 V RMS 0.820 A RMS 35.0 Amperes 1.2 Amperes 75.0 W atts
17 ″ Color Monitor
115 V RMS 0.910 A RMS 30.0 Amperes 1.9 Amperes 80.0 W atts
Optical Disk Drive 115 V RMS 0.17 A RMS 1.0 Ampere 0.24 Amperes 20.5 W atts
* 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.

Siemens SIMATIC PCS 7 OSx Specifications

General

Brand	Siemens
Model	SIMATIC PCS 7 OSx
Category	Control Systems
Language	English