Beckhoff EL5122 | EtherCAT Terminal, 2-channel encoder interface, incremental

The EL5122 EtherCAT Terminal is an interface for the direct connection of

two incremental encoders with A and B track. Encoders with single ended

signals (TTL and open collector) can be connected. Due to internal pull-up

resistors, no external circuitry is necessary for open collector evaluation.

Per channel a 24 V digital input is available for storing, blocking and setting

the counter status. It is also possible to set the counter to a predefined

value or to lock the counter directly through the process data. The 5 V, 12 V

or 24 V supply of the encoder can be provided directly via the terminal

connection points.

Special features:

• save, lock, set counter

• integrated frequency and period measurement

• optionally usable as 5 V up/down counter

• synchronous reading of the position value via distributed clocks

In addition, the EL5122 enables the measurement of a period, frequency or

velocity with a resolution of 10 ns. It also supports synchronous reading of

the encoder value together with other input data in the EtherCAT system via

the high-precision EtherCAT distributed clocks (DC).

The use of encoder profiles enables simple and fast linking of the process

data for motion control applications.