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

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

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

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

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

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

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

The analog ELX3351 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 UREF is determined in 24-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. The ELX3351 is therefore functionally comparable to the EL3356.

 

EtherCAT terminals of the ELX series must always be operated in conjunction with the ELX9560 power supply terminal. This terminal generates an electrically isolated output voltage (24 V EX) from the input voltage (24 V DC) for supplying the subsequent ELX terminals. If a new power supply is required, the combination of an ELX9410 and an ELX9560 can be used so that further ELX terminals can be added. The ELX terminal string must be terminated with one ELX9012 or two ELX9410.

Product status:

regular delivery

Product information

Technical dataELX3351
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 10 V DC from power contacts, dependent on sensor
Supply voltage electronicsvia E-bus
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
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, CCC
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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