4-channel analog input, -10/0…+10 V, -20/0/+4…+20 mA, electrically isolated, 16 bit EL3174-0002
Error LED 4
Error LED 3
Error LED 2
Error LED 1
Run LED 
+Input 1
+Input 2
+Input 3
+Input 4
-Input 1
-Input 2
-Input 3
-Input 4
Top view 
Contact assembly 

EL3174-0002 | 4-channel analog input, -10/0…+10 V, -20/0/+4…+20 mA, electrically isolated, 16 bit

The EL3174-0002 analog input terminal has four individually parameterisable inputs. Signals in the range from -10/0 to +10 V or -20/0/+4 to +20 mA can be processed via each channel. Each channel should be set by the controller to U or I mode via CoE. The input voltage or current is digitised 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, the terminal also supports commissioning with sensor values in the limit range and diagnostics according to NAMUR NE43. The four differential inputs are electrically isolated against each other and against the fieldbus (2,500 V DC).

Technical data EL3174-0002
Number of inputs 4
Power supply via the E-bus
Technology differential input, channels electrically isolated
Oversampling factor
Distributed clocks yes
Distributed clock precision << 1 µs
Internal resistance > 200 kΩ | typ. 85 Ω
Input filter limit frequency 5 kHz
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)
Measuring error < ±0.2 % (at 25 °C ±5 °C, or else < ±0.3 %, relative to full scale value)
Electrical isolation 2500 V functional isolation (test voltage channel/channel and channel/fieldbus, production test)
Current consumption power contacts
Current consumption E-bus typ. 150 mA
Bit width in the process image inputs: 16 byte
Configuration no address or configuration setting
Special features U/I parameterisable, Extended Range,standard and compact process image, activatable FIR/IIR filters
Weight approx. 65 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. class/installation pos. IP 20/variable
Approvals CE, UL