EL3174-0002 - Introduction
Analog Input Terminal; 4 channel, multi-function, ±10 V, ±20 mA, 16 bit, differential, electrically isolated
The EL3174-0002 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.
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, 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)..
 | 107% Extended Range The EL3174/ EL3174‑00xx are preconfigured to a measurement range of 107% (e.g. 0x7FFF correspond to +10.737 V or 3.22 V accordingly). Via CoE access can be reset to the previously known legacy range. Then 0x7FFF correspond to the full scale value or e.g. 10 V (3 V) as before. |