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 VDC).
 | 107% Extended Range The EL3174/ EL3174‑00xx are preconfigured to a measurement range of 107% (e.g. 0x7FFF corresponds to +10.737 V or 3.22 V accordingly). Via CoE access can be reset to the previously known legacy range. Then 0x7FFF corresponds to the full scale value or e.g. 10 V (3 V) as before. |