SIEMENS
10/10
Siemens KT 10.1 · 2016
10
Add-on modules
Buffer module
■
Overview
The SITOP PSE201U buffer module bypasses short-term power
failures lasting a few seconds and can be used with all 24 V
power supplies of the SITOP smart or SITOP modular product
lines. The buffer module is equipped with maintenance-free
capacitors and automatically takes over the 24 V power supply
in case of a power supply failure.
The SITOP DC UPS modules offer protection in the event of
extended power failures. The maintenance-free
DC UPS with
capacitors
are able to reliably supply 24 V for several minutes,
and the
DC UPS with battery modules
for several hours.
■
Benefits
•
Bridging of short-term power failures in the time range of
seconds
•
Totally maintenance-free capacitors as energy storage
•
Short charging times
•
Parallel switching of several buffer modules possible
•
Fast mounting onto standard rail and simple wiring
■
Application
With short-term power failures, the load current is backed up
without interruption via the buffer module in combination with a
SITOP smart or SITOP modular 24 V stabilized power supply.
Buffer times:
•
200 ms at 40 A
•
400 ms at 20 A
•
800 ms at 10 A
You can connect up to 8 buffer modules in parallel to extend the
buffer time (max. 10 s).
■
Design
The buffer module is connected in parallel to the output of the
SITOP smart or SITOP modular power supply. The connection to
the power supply takes place via only 2 cables.
■
Function
Buffering
In case of a power failure, the buffer module supplies the load
current for the 24 V power supply by means of its energy storage
units. Maintenance-free capacitors are used as energy storage
units.
Signaling
The LED on the device signals a supply voltage > 20.5 V.
SITOP modular
SITOP smart
power supply
Buffer
module
24 V DC
G_KT01_XX_00123
© Siemens AG 2016