EL3174-0042 - Introduction
Fig.57: EL3174-0042Analog Input Terminal; 4 channel, multi-function, ±60 V, ±30 V, 16 bit, differential
The EL3174-0042 analog input terminal has four individually parameterizable inputs. Signals in the range from -60 to +60 V or -30 to +30 V can be processed via each channel. Each channel should be set via the controller to the respective measuring range via CoE.
The input voltage or current is digitized with a resolution of 16 bit, 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.
The four differential inputs are electrically isolated against each other and against the fieldbus (2500 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. |