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ELX3351-0090 | EtherCAT Terminal, 1-channel analog input, measuring bridge, full bridge, 24 bit, Ex i, TwinSAFE SC

ELX3351-0090 | EtherCAT Terminal, 1-channel analog input, measuring bridge, full bridge, 24 bit, Ex i, TwinSAFE SC

ELX3351-0090 | EtherCAT Terminal, 1-channel analog input, measuring bridge, full bridge, 24 bit, Ex i, TwinSAFE SC

Run LED
Measure
Error LED
Self calibration
Power contact
+24 V EX
Power contact
0 V EX
+UD
+UR
+UV
-UD
-UR
-UV
Top view 
ELX3351-0090 | EtherCAT Terminal, 1-channel analog input, measuring bridge, full bridge, 24 bit, Ex i, TwinSAFE SC

ELX3351-0090 | EtherCAT Terminal, 1-channel analog input, measuring bridge, full bridge, 24 bit, Ex i, TwinSAFE SC

The system-integrated solution for explosion protection: PC-based control

TwinSAFE SC: Making standard signals usable for safety tasks

The system-integrated solution for explosion protection: PC-based control

TwinSAFE SC: Making standard signals usable for safety tasks

The analog ELX3351-0090 input terminal enables direct connection of a resistor bridge or load cell from hazardous areas, zone 0/20 and 1/21. The terminal can be connected in 4- or 6-wire technology. The ratio between the bridge voltage UD and the supply voltage UR is determined in 16-bit resolution, and the load value is calculated as a process value. Apart from automatic self-calibration (can be deactivated), additional functions such as Tara and Freeze as well as dynamic filters are integrated.

With the aid of the TwinSAFE SC technology (TwinSAFE Single Channel) it is possible to make use of standard signals for safety tasks in any network or fieldbus. To do this, EtherCAT I/Os from the areas of analog input, position measurement or communication (4…20 mA, incremental encoder, IO-Link, etc.) are extended by the TwinSAFE SC function. The properties typical for the signals and the standard functions of the I/O components are retained. TwinSAFE SC I/Os differ optically from standard I/Os by a yellow stripe on the front of the housing.

The TwinSAFE SC technology enables communication via a TwinSAFE protocol. These connections can be distinguished from the usual secure communication via Safety over EtherCAT.

The data from the TwinSAFE SC components is fed via a TwinSAFE protocol to the TwinSAFE Logic, where it can be used in the context of safety-relevant applications. Detailed examples confirmed/calculated by the TÜV SÜD for the correct application of the TwinSAFE SC components and the respective normative classifications can be found in the TwinSAFE application manual.

Product status:

regular delivery

Product information

Technical dataELX3351-0090
Technologyresistor bridge, strain gauge
Sensor typesresistor bridge, strain gauge
Number of inputs1, for 1 resistor bridge in full bridge technology
Bridge input resistance300 Ω…5 kΩ
Measuring range UDmax. ±18…±22 mV
Internal resistance> 50 kΩ (UR, differential), > 1 MΩ (UD, differential)
Input filter limit frequencytyp. 3.6 kHz (-3 dB, low pass)
Conversion timetyp. 1.6 ms
Resolution24 bit, 32 bit presentation
Filter50 Hz, configurable
Measurement error/ uncertainty±0.01% for the calculated load value in relation to the final load value (nominal strain gauge characteristic value of 2 mV/V), self-calibration active, 50 Hz filter active
Power supply UVup to 12 V DC from power contacts, dependent on sensor
Supply voltage electronics24 V DC (via power contacts), ELX9560 power supply
Current consumption power contactsdepends on sensor, min. 20 mA
Current consumption E-bustyp. 85 mA
Supported nominal sensitivityall, parameter resolution: 0.01 µV/V; recommended: 0.5…3 mV/V
Special featuresself-calibration, dynamic filters, Freeze, TwinSAFE SC
Weightapprox. 60 g
Operating/storage temperature-25…+60°C/-40…+85°C
Relative humidity95%, no condensation
Vibration/shock resistanceconforms to EN 60068-2-6/EN 60068-2-27
EMC immunity/emissionconforms to EN 61000-6-2/EN 61000-6-4
Protect. rating/installation pos.IP20/see documentation
Approvals/markingsCE, UL, ATEX, IECEx, cFMus
Ex markingATEX:
  II 3(1)G Ex ec [ia Ga] IIC T4 Gc
  II (1)D [Ex ia Da] IIIC
  I (M1) [Ex ia Ma] I
IECEx:
  Ex ec [ia Ga] IIC T4 Gc
  [Ex ia Da] IIIC
  [Ex ia Ma] I
cFMus:
  AIS Class I, II, III, Division 1, Groups A thru G
  Class I, Division 2, Groups A, B, C, D
  Class I, Zone 2, AEx ec [ia Ga] IIC T4 Gc
  [AEx ia Da] IIIC T4
Housing dataELX-12-8pin
Design formcompact terminal housing with signal LEDs
Materialpolycarbonate, blue
Dimensions (W x H x D)12 mm x 100 mm x 68 mm
Installationon 35 mm DIN rail, conforming to EN 60715 with lock
Side by side mounting by means ofdouble slot and key connection
Markinglabeling of the BZxxx series
Wiringsolid conductor (s), flexible conductor (st) and ferrule (f): spring actuation by screwdriver
Connection cross-sections*: 0.08…2.5 mm²,
st*: 0.08…2.5 mm²,
f*: 0.14…1.5 mm²
Connection cross-section AWGs*: AWG28…14,
st*: AWG28…14,
f*: AWG26…16
Stripping length8…9 mm
Power contacts2 blade/spring contacts

*s: solid wire; st: stranded wire; f: with ferrule

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