Beckhoff EL5101-0011 | EtherCAT Terminal, 1-channel encoder interface, incremental

The EL5101-0011 EtherCAT Terminal is an interface for the direct connection

of incremental encoders with differential signals (RS422).

It processes the signals for a finer resolution of position values according to

the oversampling principle. The 5 V and 24 V supply of the encoder can be

provided directly via the terminal connection points.

Special features:

• high-resolution position detection through oversampling principle

• up to 100 measured values per PLC cycle with 10 µs sampling time

• maximum input frequency of 5 MHz

A conventional incremental encoder reads a counter value with each bus cycle

and passes it on to the higher-level controller in the next fieldbus cycle.

The EL5101-0011 reads the current counter value at several configurable and

equidistant times between two fieldbus communication cycles with an

adjustable whole number multiple (oversampling factor: n) of the bus cycle

time. A packet of n position values of 32 bits each is then transmitted to the

higher-level controller in the next fieldbus communication cycle. The minimum

sampling time is 10 µs (100 ksps). The EL5101-0011 terminal is especially

suitable for applications where high-resolution position detection is required.