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EL3172 | EtherCAT Terminal, 2-channel analog input, multi-function, ±10 V, ±20 mA, 16 bit

EL3172 | EtherCAT Terminal, 2-channel analog input, multi-function, ±10 V, ±20 mA, 16 bit

EL3172 | EtherCAT Terminal, 2-channel analog input, multi-function, ±10 V, ±20 mA, 16 bit

Run LED
Error LED 1
Error LED 2
+Input 1
+Input 2
-Input 1
-Input 2
Top view 
Contact assembly 
EL3172 | EtherCAT Terminal, 2-channel analog input, multi-function, ±10 V, ±20 mA, 16 bit

EL3172 | EtherCAT Terminal, 2-channel analog input, multi-function, ±10 V, ±20 mA, 16 bit

The EL3172 analog input terminal supplements the EL3174, thus 2-channel and 4-channel universal input terminals are now available in the EL31xx family. The EL3172 has two single parameterizable inputs. Signals in the range ±10 V or ±25 mA can be processed by each channel, therefore of course also unipolar 0…10 V or 0/4…20 mA. Each channel should be set by the controller to U or I mode via CoE. The input voltage or current is digitized with a resolution of 16 bits, and is transmitted (electrically isolated) to the higher-level automation device. With a technical measuring range of ±107% of the nominal range 10 V/20 mA and the 25 mA measuring range, the terminal also supports the commissioning with sensor values in the limit range and the evaluation according to NAMUR NE43. The two differential inputs are electrically isolated from each other and from the fieldbus.

Product status:

regular delivery

Product information

Technical dataEL3172
Number of inputs2
Ground reference (analog/encoder)differential, electrically isolated channel/channel
Power supplyvia the E-bus
Distributed clocksyes
Distributed clock precision<< 1 µs
Internal resistance> 200 kΩ | typ. 85 Ω
Input filter limit frequency5 kHz
Common-mode voltage UCMmax. 50 V (voltage and current measurement)
Dielectric strengthmax. 30 V (current measurement)
Conversion timeminimum 150 µs
Measuring range, nominal-10/0…+10 V | -25/-20/0/+4…+20/25 mA
Measuring range, technical-10.73…+10.73 V | -25…+25 mA
Resolution16 bit (incl. sign)
Measurement error/ uncertainty< ±0.2% (at 25°C ±5°C, or else < ±0.3%, relative to full scale value)
Electrical isolationchannel/bus and channel/channel: functional separation 707 V DC type test
Current consumption E-bustyp. 150 mA
Bit width in the process imageinputs: 16 byte
Configurationno address or configuration setting
Special featuresU/I parameterizable, ExtendedRange, standard and compact process image, activatable FIR/IIR filters
Operating/storage temperature-25…+60°C/-40…+85°C
Weightapprox. 65 g
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/variable
Approvals/markingsCE
Housing dataEL-12-8pin
Design formcompact terminal housing with signal LEDs
Materialpolycarbonate
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
Current load power contactsImax: 10 A

*s: solid wire; st: stranded wire; f: with ferrule

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