Introduction
EtherCAT Box with four analog inputs for thermocouples
The EP3314 EtherCAT Box with analog inputs enables direct connection of four thermocouples. The module circuit can operate thermocouple sensors in a 2-wire configuration. Linearisation over the full temperature range is realized with the aid of a microprocessor. The temperature range can be selected freely. The error LEDs indicate a broken wire. Compensation for the cold junction is made through a temperature measurement in the connecting plugs. This means that standard extension leads can be connected. The EP3314 also enables millivolt measurement.
The module is quite versatile, but the default values are selected in such a way that in most cases it is not necessary to perform configuration. The input filter and associated conversion times can be set within a wide range, and several data output formats may be chosen. The inputs can, if required, be scaled differently, and automatic limit monitoring is also available. EtherCAT is used for parameterization purposes. The parameters are stored in the module. For temperature compensation a Pt1000 element is required. Beckhoff offers a plug connector with temperature compensation (ZS2000-3712).