Beckhoff ELX5151 | EtherCAT Terminal, 1-channel encoder interface, incremental

The ELX5151 EtherCAT Terminal allows the direct connection of an intrinsically

safe incremental encoder from zone 0/20 and 1/21 hazardous areas.

The terminal supplies the encoder with 8.2 V DC and evaluates a diagnostic-

capable NAMUR signal according to IEC 60947-5-6. In this way, a wire breakage

or short circuit can be detected in addition to the switching state.

The ELX5151 can also be used as an up/down counter and allows switching

between 16- and 32-bit counting.

EtherCAT terminals of the ELX series must always be operated in conjunction

with the ELX9560 power supply terminal. This terminal generates an electrically

isolated output voltage (24 V EX) from the input voltage (24 V DC) for supplying

the subsequent ELX terminals. If a new power supply is required, the combination

of an ELX9410 and an ELX9560 can be used so that further ELX terminals can be

added.

The ELX terminal segment must be terminated with one ELX9012. two ELX9410

or one EK1110. The use of two ELX9410 allows the use of EL terminals behind

ELX terminals. With the EK1110. the terminal segment can be continued via an

EtherCAT cable, for example to implement cable redundancy.