Beckhoff ELX1054 | EtherCAT Terminal, 4-channel digital input, NAMUR, Ex i

The ELX1054 digital input terminal acquires signals from NAMUR field

devices according to EN 60947-5-6. The sensors are supplied with a

voltage of 8.2 V and return a diagnosable current signal. In this way,

a wire breakage or short-circuit can be detected in addition to the

switching state. The LEDs indicate signal or any error states, channel

by channel.

Using a DIP switch on the side, it is possible to select channel by channel

whether a positive switching or negative switching sensor is to be 

connected. Thus, no changes to the PLC are required for the connection

of both NAMUR break contacts or make contacts.

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.