EL3174-0030 - Introduction
Fig.48: EL3174-0030Analog Input Terminal; 4 channel, multi-function, ±10 V, ±20 mA, 16 bit, externally calibrated
The EL3174-0030 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. Physically, the voltage and current signals should be connected to different terminal points. Each channel should then be set by the controller/TwinCAT to U or I mode via CoE. The voltage inputs operate differentially; the current inputs are single-ended. All inputs are digitized with a resolution of 16 bits and 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.
For the EL3174-0030, an individual calibration certificate is available, currently as a choice of DAkkS or IS0 17025‑compliant certificate. The certificate is issued by an accredited service provider in collaboration with Beckhoff.
The desired calibration certificate can be downloaded from here using the respective serial number.
 | 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 corresponds to the full scale value or e.g. 10 V (3 V) as before. |