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 |
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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 power contacts | load-dependent |
Current consumption E-bus | typ. 180 mA |
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 |
Operating/storage temperature | -25…+60°C/-40…+85°C |
Weight | approx. 65 g |
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 |
Approvals/markings | CE, UL, ATEX, IECEx, cFMus |
Protect. rating/installation pos. | IP20/variable |
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 |
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Design form | HD (High Density) housing with signal LEDs |
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 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 |
*s: solid wire; st: stranded wire; f: with ferrule
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