Description
The analog EL3356 input terminal enables direct connection of a resistor bridge or load cell in a 4- or 6-wire connection technology. The ratio between the bridge voltage UD and the supply voltage UREF is determined simultaneously in the input circuit and the final load value is calculated as a process value on the basis of the settings in the terminal. With automatic self-calibration (can be deactivated) and dynamic filters the terminal with measuring cycles of 10 ms can be used for slow weighings with high precision.
| Technical data | EL3356 |
|---|---|
| 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. ±27 mV |
| Measuring range UREF | max. ±13.8 V |
| Internal resistance | > 200 kΩ (UREF), > 1 MΩ (UD) |
| Input filter limit frequency | 10 kHz low pass (-3 dB) |
| Conversion rate | 100…4 samples/s (10…250 ms conversion time) |
| Power supply UV | up to 12 V DC from power contacts, dependent on sensor |
| Resolution | 16 bit, 32 bit presentation |
| Measurement error/ uncertainty | < ±0.01 % for the calculated load value in relation to the final load value with a 12 V feed and 24 mV bridge voltage (hence nominal strain gauge characteristic value of 2 mV/V), self-calibration active, 50 Hz filter active |
| Current consumption power contacts | depends on strain gauge supply, min. 1 mA |
| Current consumption E-bus | typ. 210 mA |
| Supported nominal sensitivity | all, parameter resolution: 0.01 µV/V; recommended: 0.5…4 mV/V |
| Special features | self-calibration, quadruple averager, dynamic filters |
| 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
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