SITOP PSE200U - Electronic protection of 24 V DC load circuits with fast fault localization0 pages
© Siemens AG 2015
Brochure
Edition
08/2015
SITOP PSE200U
Electronic protection of 24 V DC load
circuits with fast fault localization
The SITOP PSE200U selectivity module distributes the load
current across several 24 V DC load circuits and monitors
them reliably for overload and short-circuit conditions. The
electronics permit brief current peaks caused, for example,
by high inrush currents, but isolate 24 V DC load circuits in
the event of an extended overload. This is ensured even on
high-resistance lines and in the case of "creeping" shortcircuits. In such cases, miniature circuit breakers fail to trip,
or trip too late, even if the power supply unit could deliver
the required tripping current. The SITOP PSE200U continues to supply 24 V DC to the load circuits not affected by
an overload – a feature which avoids a possible total system failure. The single-channel message version facilitates
rapid, channel-specific fault localization via just one digital
input at the PLC.
Your benefits at a glance
■ Reliable tripping regardless of cable lengths or crosssections
■ Four 24 V DC load circuits in two versions with adjustable output current range of 0.5 to 3 A or 3 to 10 A
■ Easy configuration thanks to individual setting of
maximum channel current using potentiometers
■ Two versions for remote diagnostics:
common signaling contact or single-channel
signaling
■ Evalution for modules with single-channel signaling
via free of charge SIMATIC S7 or SIMOTION function
blocks
■ LEDs for fast on-site fault localization
Power
supply
Selectivity
module
PLC
HMI
Actuators
Sensors
■ Remote reset possible from a central location
■ Simple commissioning thanks to manual switch on/
off of channels using reset button
24 V DC
■ Voltage measure points for output currents (1 V = 1 A),
disconnecting of load circuit is not required
■ Sequential connection delay of individual 24 V DC
load circuits reduces total inrush current
■ Sealable transparent cover protects against maladjustment of tripping current and sequential delay
As electronic protection, the SITOP PSE200U selectivity module
switches faulty 24 V DC load circuits off immediately, and continues
to supply the other 24 V DC load circuits without any interruption.