EL3351 | EtherCAT Terminal, 1-channel analog input, measuring bridge, full bridge, 16 bit
the strain gauge can be
drawn from the outputs
+UV and -UV of the terminal
(5 V) or it can be supplied
from an external source.
With external strain gauge
supply only max. ±12 V
are permitted.
EL3351 | EtherCAT Terminal, 1-channel analog input, measuring bridge, full bridge, 16 bit
Measurement technology easily configured: Analog EtherCAT input terminals.
Measurement technology simply integrated: With the analog EtherCAT Terminals.
Precise strain measurement in the I/O system
The EL3351 analog input terminal permits direct connection of a resistor bridge. The bridge voltage, UD, and the supply voltage, UREF, to the bridge are digitized with a 16 bit resolution, and are transmitted along an electrically isolated channel to the supervising automation system. The input channels are available in the form of two 16 bit values for further processing. The resulting measurement can be calculated from the formula: measurement = UD/UREF. Precise acquisition of the supply voltage along with the bridge voltage compensates for long-term and temperature drift.
Product status:
regular delivery
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| Technical data | EL3351 |
|---|---|
| Number of inputs | 2, for 1 resistor bridge in full bridge technology |
| Power supply | via the E-bus |
| Technology | resistor bridge, strain gauge |
| Signal type | differential |
| Distributed clocks | – |
| Measuring range UD | max. -20…+20 mV |
| Measuring range UREF | max. -12…+12 V |
| Internal resistance | > 200 kΩ (UREF), > 1 MΩ (UD) |
| Input filter limit frequency | 50 Hz default setting, parameterizable |
| Conversion time | 2.5…800 ms, configurable, max. 400 samples/s |
| Power supply UV | 5 V, max. 20 mA |
| Resolution | 16 bit, 32 bit presentation |
| Filter | 50 Hz, configurable |
| Measurement error/ uncertainty | < ±0.1 % (relative to full scale value, 50 Hz filter) |
| Current consumption power contacts | – |
| Current consumption E-bus | typ. 170 mA |
| Supported nominal sensitivity | calculated in PLC, freely selectable |
| Special features | integrated 5 V DC bridge supply |
| Weight | approx. 60 g |
| Operating/storage temperature | 0…+55 °C/-25…+85 °C |
| Relative humidity | 95 %, no condensation |
| Vibration/shock resistance | conforms to EN 60068-2-6/EN 60068-2-27 |
| EMC immunity/emission | conforms to EN 61000-6-2/EN 61000-6-4 |
| Protect. rating/installation pos. | IP20/variable |
| Pluggable wiring | for all ESxxxx terminals |
| Approvals/markings | CE, UL, ATEX, IECEx |
| Ex marking | ATEX: II 3 G Ex nA IIC T4 Gc IECEx: Ex ec IIC T4 Gc |
| Housing data | EL-12-8pin | ES-12-8pin |
|---|---|---|
| Design form | compact terminal housing with signal LEDs | terminal housing with pluggable wiring level |
| Material | polycarbonate | |
| Dimensions (W x H x D) | 12 mm x 100 mm x 68 mm | |
| Installation | on 35 mm DIN rail, conforming to EN 60715 with lock | |
| Side by side mounting by means of | double slot and key connection | |
| Marking | labeling of the BZxxx series | |
| Wiring | solid conductor (e), flexible conductor (f) and ferrule (a): spring actuation by screwdriver | |
| Connection cross-section | s*: 0.08…2.5 mm², st*: 0.08…2.5 mm², f*: 0.14…1.5 mm² | s*: 0.08…1.5 mm², st*: 0.08…1.5 mm², f*: 0.14…1.5 mm² |
| Connection cross-section AWG | s*: AWG 28…14, st*: AWG 28…14, f*: AWG 26…16 | s*: AWG 28…16, st*: AWG 28…16, f*: AWG 26…16 |
| Stripping length | 8…9 mm | 9…10 mm |
| Current load power contacts | Imax: 10 A | |
*s: solid wire; st: stranded wire; f: with ferrule
| Special terminals | |
|---|---|
| EL3351 | EtherCAT Terminal, 1-channel analog input, measuring bridge, full bridge, 16 bit |
| ES3351 | EtherCAT Terminal, 1-channel analog input, measuring bridge, full bridge, 16 bit, pluggable wiring |
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