Sitop: Power Supplies SITOP Power LOGO!Power
Sitop: Power Supplies SITOP Power LOGO!Power
Sitop: Power Supplies SITOP Power LOGO!Power
Selection guide
Single-phase,
output currents 2.5 to 4 A
SITOP Single-phase,
output current 5 A
Three-phase,
Catalog KT 10.1 · 2002 output currents 10 to 40 A
Accessories
Please contact
your local SITOP power
Siemens representative Customized
SITOP power
Further information and news on SITOP AS interface power supplies
can also be found on the internet at:
http://www.siemens.com/sitop
LOGO!Power
Technical information
and configuring notes
Unstabilized power supplies Features Unstabilized power supply (basic connection diagram)
The AC line voltage is trans- • High efficiency Line isolation Rectification Filtering
formed into a low voltage by The efficiency of approxi-
means of a 50 Hz (60 Hz) mately 90 % keeps current
transformer and rectified. consumption low and the
The DC voltage varies cabinet cool.
+
according to supply voltage • Simple installation 50 Hz Vout
and current load. The low weight and mount- ~
ing assistance allow for rap-
Stabilized power supplies id and inexpensive
(switched-mode) installation.
A rectified and filtered line
voltage is switched at a high • Low space requirement
frequency. With their high power densi-
ty, the units take up little G_KT01_en_00067
The generated pulse train is space in the cabinet or in
then again rectified and fil- machines, etc.
tered. • Precise output voltage
The output voltage can be The precise output voltage
regulated via the duty factor of 24 V DC is available even
or switching frequency. with severe AC supply fluc-
tuations. The loads are pro-
The switching operation takes tected against overload
place either on the mains side peaks. This extends the ser-
(primary switched-mode regu- vice life and reduces down-
lator) or on the low-voltage times.
side (secondary switched- • Low residual ripple
mode regulator). The low residual ripple
of < 0.4 % allows even volt-
The SITOP 24 V DC power
age sensitive loads to be op-
supplies are switched on the
erated.
primary side. The output volt-
age is stabilized via the duty • Integrated short-circuit pro-
factor, the switching fre- tection
quency is constant. Additional protection of the
lines in the 24 V DC circuit is
not required.
• Safe electrical isolation
The Vout output is isolated
from the input galvanically.
This electric isolation en-
sures that no dangerous
voltages can develop at the
output.
• Compliance with national
and international standards,
such as
EMC according to
EN 50081-1/-2 and
EN 50082-1/-2
Output voltage SELV ac-
cording to EN 60950
UL/cUL approval
No release of silicone
FM (American standard for
process engineering sec-
tors)
+
... kHz
50 Hz +
~
PWM
Vout
G_KT01_en_00068
■ Selection guide
Input voltage Alternating voltage Direct voltage
120 to 230 V 500 to 600 V 400 to 500 V 24 V DC 48 to 110 V 120 to 230 V
Output Output Order No. AC two-phase three-phase DC DC
voltage current AC AC