Beckhoff ELX3312-0090 | EtherCAT Terminal, 2-channel analog input, temperature

The ELX3312 analog input terminals allows the direct connection of thermocouples

located in hazardous areas classified zone 0/20 or 1/21. The circuitry of the ELX3312

can operate sensors with 2-wire technology. Linearization is possible over the entire

freely selectable temperature range. The error LEDs indicate a broken wire.

Compensation for the cold junction is achieved through internal temperature

measurement. Millivolt measurement is also possible with ELX3312.

With the aid of the TwinSAFE SC technology (TwinSAFE Single Channel) it is possible

to make use of standard signals for safety tasks in any network or fieldbus.

To do this, EtherCAT I/Os from the areas of analog input, position measurement or

communication (4…20 mA, incremental encoder, IO-Link, etc.) are extended by the

TwinSAFE SC function. The properties typical for the signals and the standard

functions of the I/O components are retained. TwinSAFE SC I/Os differ optically from

standard I/Os by a yellow stripe on the front of the housing.

The TwinSAFE SC technology enables communication via a TwinSAFE protocol. 

These connections can be distinguished from the usual secure communication via

Safety over EtherCAT.

The data from the TwinSAFE SC components is fed via a TwinSAFE protocol to the

TwinSAFE Logic, where it can be used in the context of safety-relevant applications.

Detailed examples confirmed/calculated by the TÜV SÜD for the correct application

of the TwinSAFE SC components and the respective normative classifications can

be found in the TwinSAFE application manual.