Notes on commissioning

When operating the EL33xx analog EtherCAT Terminals, high frequency superimposed signals from interfering devices (e.g. proportional valves, stepper motors or DC motor output stages) can be picked up by the terminal. In order to guarantee interference-free operation, we recommend the use of separate power supply units for the terminals and the interference-causing devices.
Without additional protective measures, the maximum cable length from the EtherCAT Terminal to the thermocouple is 30 m. For longer cable lengths, suitable surge protection should be provided.
A modification of the sensor circuit with additional devices such as change over switches or multiplexer decreases the measuring accuracy. We strongly advise against such modifications.
When using the high-precision thermocouple terminals (EL3314-0002, EL3314-0010, EL3314-0020, EL3314-0030, EL3314-0092), it is recommended to use thermocouples of a correspondingly high accuracy class. The use of compensation wires is not recommended when using the high-precision thermocouple terminals.