SITOP SEL1200/1400, PSE200U - Electronic protection of 24 V DC load circuits with fast fault detection
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SITOP SEL1200/1400, PSE200U - Electronic protection of 24 V DC load circuits with fast fault detection - 1

SITOP power supply Electronic protection and fast fault localization in 24 V DC load circuits SITOP SEL1200, SEL1400, PSE200U selectivity modules

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SITOP SEL1200/1400, PSE200U - Electronic protection of 24 V DC load circuits with fast fault detection - 2

The SITOP selectivity modules distribute the load current across several 24 V DC load circuits and monitor them reliably for overload and short-circuit conditions. The electronics permit brief current peaks caused, for example, by high inrush currents, but isolate load circuits in the event of an extended overload. This is ensured even on high-resistance lines. 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 expansion modules continue to reliably supply 24 V to the load circuits...

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SITOP SEL1200/1400, PSE200U - Electronic protection of 24 V DC load circuits with fast fault detection - 3

SITOP PSE200U and SEL1400 - limiting characteristic SITOP SEL1200 - switching characteristic for standard offers maximum safety protection In terms of the tripping characteristic, the SEL1400 selectivity modules behave like the tried and tested PSE200U modules. They limit the output current to 150% of the set value, corresponding to the overload behavior of the SITOP power supplies of the Advanced and Standard product lines. This means that, even in the case of a short circuit, no overload can occur and consequently no voltage drop at the output of the power supply unit. Even when a power...

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SITOP SEL1200/1400, PSE200U - Electronic protection of 24 V DC load circuits with fast fault detection - 4

Advantages of all SITOP selectivity modules Reliable tripping regardless of cable lengths or cross-sections Easy configuration thanks to individual setting of maximum output current using potentiometers Remote reset possible from a central location Three-color LEDs for fast on-site fault localization Two possibilities for remote diagnostics: common signaling contact or single-channel signaling Single-channel evaluation via just one PLC digital input and function block Simple commissioning thanks to manual switch on/off of load circuits using reset button Sequential connection delay of...

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SITOP SEL1200/1400, PSE200U - Electronic protection of 24 V DC load circuits with fast fault detection - 5

Sequential switching on reduces burden on the power supply Fast, channel-exact diagnostics The single-channel signaling of the PSE200U and the single-channel diagnostics of the SEL1200/1400 are efficient status signals to the PLC via only one digital input. A serial code is evaluated via a free-of-charge SIMATIC S7 function block. SITOP PSU200U reports the status of the outputs via 4 channel bits, each of which are separated by a pause bit: 2750 ms Start sign Max. total current without sequential switching on Signal output Max. total current with sequential switching on Total current...

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SITOP SEL1200/1400, PSE200U - Electronic protection of 24 V DC load circuits with fast fault detection - 6

Technical specifications SITOP SEL1200 Article number Input Rated voltage Vin rated Voltage range Input current Output Rated voltage Vout rated Rated current Iout rated up to +60 °C per output Setting range per output Tripping characteristic Switching – for standard protection devices Load-optimized (as soon as the previous output is less than the set rated value again), +25 ms, +200 ms, +500 ms Efficiency at Vout rated , Iout rated Current-limiting – for increased requirements regarding protection Protection and monitoring Status displays Three-color LED per output: green – connected,...

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SITOP SEL1200/1400, PSE200U - Electronic protection of 24 V DC load circuits with fast fault detection - 7

Technical specifications Article number ... with NEC Class 2 Rated voltage Vin rated

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SITOP SEL1200/1400, PSE200U - Electronic protection of 24 V DC load circuits with fast fault detection - 8

Get more information More on the SITOP selectivity modules: www.siemens.com/sitop-select Using the TIA Selection Tool to select the appropriate power supply, including add-on module: www.siemens.com/tia-selection-tool Operating instructions as download: www.siemens.com/sitop/manuals CAx data (2D, 3D, circuit diagram macro) as download: www.siemens.com/sitop-cax Find your personal contact partners at: www.siemens.com/automation/partner Published by Siemens AG Digital Industries Process Automation Ostliche Rheinbruckenstr. 50 76187 Karlsruhe, Germany For the U.S. published by Siemens Industry...

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