The EL3174 analog input terminal has four individually parameterizable inputs. Signals in the range from -10/0 to +10 V or -20/0/+4 to +20 mA can be processed via each channel. Physically, the voltage and current signals should be connected to different terminal points. Each channel should then be set by the controller/TwinCAT to U or I mode via CoE. The voltage inputs operate differentially; the current inputs are single-ended. All inputs are digitized with a resolution of 16 bits and transmitted, electrically isolated, to the higher-level automation device. With a technical measuring range of ±107% of the nominal range, the terminal also supports commissioning with sensor values in the limit range and diagnostics according to NAMUR NE43.
Product status:
regular delivery
Product information
| Technical data | EL3174 | 
|---|---|
| Number of inputs | 4 | 
| Ground reference (input) | voltage: differential, current: single-ended | 
| Power supply | via the E-bus | 
| Oversampling factor | – | 
| Distributed clocks | yes | 
| Distributed clock precision | << 1 µs | 
| Internal resistance | > 200 kΩ | typ. 85 Ω | 
| Input filter limit frequency | 5 kHz | 
| Common mode voltage UCM | max. 35 V (voltage measurement) | 
| Dielectric strength | max. 30 V (current measurement) | 
| Conversion time | minimum 150 µs | 
| Measuring range, nominal | -10/0…+10 V | -20/0/+4…+20 mA | 
| Measuring range, technical | -10.73…+10.73 V | -21.47…+21.47 mA | 
| Resolution | 16 bit (incl. sign) | 
| Measurement error/uncertainty | < ±0.3% (relative to full scale value) | 
| Electrical isolation | 500 V (E-bus/signal voltage) | 
| Current consumption E-bus | typ. 180 mA | 
| Current consumption power contacts | load-dependent | 
| Bit width in the process image | inputs: 16 byte | 
| Configuration | no address or configuration setting | 
| Special features | U/I parameterizable, ExtendedRange, standard and compact process image, activatable FIR/IIR filters | 
| Weight | approx. 65 g | 
| Operating temperature | -25…+60°C | 
| Storage temperature | -40…+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 | 
| Approvals/markings | CE, CCC, UL, ATEX, IECEx, cFMus | 
| Ex marking | ATEX: II 3G Ex ec IIC T4 Gc IECEx: Ex ec IIC T4 Gc cFMus: Class I, Division 2, Groups A, B, C, D Class I, Zone 2, AEx ec IIC T4 Gc  | 
| Housing data | EL-12-16pin | 
|---|---|
| Design form | HD (High Density) housing with signal LEDs | 
| Material | polycarbonate | 
| 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 BZxxxx series | 
| Wiring | solid conductors (s): direct plug-in technique; fine-stranded conductors (st) and ferrule (f): spring actuation by screwdriver | 
| Connection cross-section | s*: 0.08…1.5 mm²,  st*: 0.25…1.5 mm², f*: 0.14…0.75 mm²  | 
| Connection cross-section AWG | s*: AWG28…16, st*: AWG22…16, f*: AWG26…19  | 
| Stripping length | 8…9 mm | 
| Current load power contacts | Imax: 10 A | 
| Dimensions (W x H x D) | 12 mm x 100 mm x 68 mm | 
*s: solid wire; st: stranded wire; f: with ferrule
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