6EP1961-2BA00 Siemens SITOP Selectivity Module Original Brand New
$188.07
6EP1961-2BA00 SiemensĀ
Overview
SITOP selectivity modules
Selectivity and fast fault location in 24 V and 48 V feeders
The SITOP PSE200U and SITOP SEL1200/SEL1400 selectivity modules are the optimal expansion for all 24 V power supplies in order to distribute the load current across multiple feeders and monitor it. The SITOP SEL1200 is also available for 48 V applications. Overload and short-circuit in one or more feeders is reliably detected and signaled.
The electronics permit brief current peaks caused, for example, by high inrush currents, but disconnect feeders in the event of an extended overload. This is ensured even on high-resistance lines and in the case of “creeping” short-circuits. 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 add-on module continues to supply the intact feeders with 24Ā V or 48Ā V, without any interruption and totally reaction-free ā features which avoid a potential total system failure.
Benefits
- Reliable detection of overload or short-circuit in the 24 V and 48 V circuit
- Safe tripping regardless of line resistance
- Switching characteristic for standard protection and high inrush currents (SEL1200)
- Current-limiting characteristic for increased fuse protection requirements (SEL1400, PSE200U)
- Either 4 or 8 load feeders per module with individually adjustable response threshold
- 4 outputs 24Ā V, adjustable, 0.5 ā 3 A or 3 ā 10 A (PSE200U)
- 4 outputs 24Ā V, adjustable, 2 ā 10 A (SEL1200, SEL1400)
- 8 outputs 24Ā V, adjustable, 1 ā 5 A or 2 ā 10 A (SEL1200, SEL1400)
- 4 outputs 48 V, adjustable, 1 – 10 A (SEL1200 48 V)
- Common signaling contact or single-channel diagnostics for voltage, current, set threshold value, and if applicable reason for switch off (SEL1200, SEL1400)
- Common signaling contact or single-channel signaling for output state (PSE200U)
- Voltage measuring points for output currents (1 V = 1 A), disconnection of load circuit is not required (PSE200U)
- Variants with power limitation of the outputs to 100Ā VA according to NEC Class 2 (PSE200U)
- Ex variants for use in hazardous environments (SEL1200, SEL1400)
- Evaluation via free SIMATIC S7 function blocks (S7-1500/1200/400/300) and faceplates for SIMATIC Comfort Panels for SITOP SEL1200 and SITOP SEL1400
- Evaluation via free SIMATIC S7 function blocks (S7-1500/1200/400/300) or SIMOTION function blocks for SITOP PSE200U modules with single-channel message
- Simple configuration thanks to individual setting of maximum current for every output using potentiometers
- 3-color LEDs for fast on-site fault localization
- Remote reset possible from a central location
- Simple commissioning thanks to manual switch on/off of outputs
- Sequential connection of feeders to reduce total inrush current
- Sealable transparent cover over adjusters for currents and times protects against maladjustment
- Library for visualization in SIMATIC PCS 7
Design
The selectivity modules are specially designed for the response of switched-mode power supply units and the 24 V DC feeders to be supplied. Individual setting of the response threshold allows optimum adaptation to the respective feeder.
Function
Monitoring
The current per output is monitored by the selectivity modules; if the set threshold of the output is exceeded, the output is switched off according to a predefined time-current characteristic curve. All other feeders continue to be supplied without interruption. The supplying 24 V input voltage is also continuously monitored for the selectivity modules with current-limiting characteristic (PSE200U, SEL1400). As soon as this voltage threatens to fail, the path with a higher current than the set threshold is disconnected immediately.
SITOP PSE200U signaling
Signaling of the faulty feeder takes place by the LEDs on the device as well as via common signaling contact or single-channel signaling. The selectivity modules with single-channel signaling output the status (connected, disconnected due to overload) of the individual outputs cyclically by means of a serial code which can be read in by a digital PLC input.
Free function blocks for SIMATIC S7-300/400/1200/1500 for STEP 7 and TIA Portal as well as SIMOTION CPUs with SIMOTION SCOUT are available for evaluation. This enables simple integration into the S7 diagnostics and host control or HMI systems. Integration into LOGO! logic modules is also described as an application example.
More information, as well as the function blocks for download, can be found at:
SIMATIC S7:
http://support.automation.siemens.com/WW/view/en/61450284
SIMOTION:
http://support.automation.siemens.com/WW/view/en/82555461
LOGO!:
http://www.siemens.com/logo-application-examples
Easy visualization in the SIMATIC PCS 7 process control system is made possible by the SITOP library, which contains function blocks and faceplates for single-channel and common signaling:Ā http://support.industry.siemens.com/cs/ww/en/view/109476154
SITOP SEL1200 and SEL1400 signaling
Signaling of the faulty feeder takes place by the LEDs on the device as well as via common signaling contact or diagnostic interface. When the switch is set to “Diagnostic interface”, the device parameters and the status of the individual outputs are cyclically output via a serial code (Manchester code), which can be read in by a digital PLC input.
Free function blocks for SIMATIC S7-300/400/1200/1500 and faceplates for SIMATIC Comfort Panels are available for evaluation.
The output current of each of the 4 or 8 outputs, the set current threshold, the reason for the automatic disconnection and the type, date of manufacture and article number of the selectivity module are evaluated.
More information as well as the function blocks for downloading can be found at:
https://support.industry.siemens.com/cs/ww/en/view/109763709
Connection and disconnection of the outputs
To reduce the inrush current and relieve the power supply, the individual outputs can be switched on sequentially with a pre-defined delay time or load-dependent when the device starts up.
Each output can be manually connected and disconnected on the device (for example, for commissioning or service). Disconnected outputs can also be connected by means of remote reset (24 V input). The prerequisite is that the outputs were not disconnected manually on the device.
Switch-off characteristic
The SITOP PSE200U, SITOP select und SITOP SEL1400 selectivity modules feature a limiting characteristic, whereas the SITOP SEL1200 selectivity module has a switching one. The SITOP SEL1200 is adequate for all load components which correspond to the PLC standard. With this module, the voltage can briefly drop below 20 V. The SITOP SEL1400 prevents voltage drops below 20Ā V in the loads and therefore also protects those components which do not correspond to the PLC standard.
6EP1961-2BA00 Siemens
SITOP select diagnostics module 4-channel input: 24 V DC/40 A output: 24 V DC/4x 10 A threshold adjustable 2-10 A
| Weight | 0.2 kg |
|---|---|
| Dimensions | 100 × 130 × 80 mm |
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