EL3174-0032 – Introduction
Fig.81: EL3174-0032EtherCAT Terminal, 4-channel analog input, multi-function, ±3 V, ±20 mA, 16-bit, differential, electrically isolated
The EL3174-0032 analog input terminal has four individually parameterizable inputs. Signals either in the range -3 … +3 V or in the range -20/0/+4 … +20 mA can be processed per 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 16-bit resolution 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 within the limit range and evaluation in accordance with NAMUR NE43. The four differential inputs are electrically isolated from each other and from the fieldbus (2500 V DC).
 | 107 % extended range The EL3174/ EL3174-00xx are pre-set to 107 % measuring range, e.g. 0x7FFF corresponds to +10.737 V or 3.22 V. The previously known legacy range can be reset via CoE access. Then 0x7FFF will correspond to the full scale value again (FSV, e.g. 10 V/ 3 V). |