Beckhoff EL5112 | EtherCAT Terminal, 2-channel encoder interface, incremental

The EL5112 EtherCAT Terminal is an interface for the direct connection of

two incremental encoders with A and B track or one encoder with A, B and

C track. Encoders with differential signals (RS422) or single-ended signals

(TTL and open collector) can be connected.

Input frequencies up to 5 MHz can be processed. In 2-channel mode, one

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

the counter status; in 1-channel operation, both inputs can be used.

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:

• can be used as 1 x ABC or 2 x AB incremental encoder interface

• save, lock, set counter

• integrated frequency and period measurement

• optional 5 V up/down counter

• microincrements

• synchronous reading of the position value via distributed clocks

• timestamp on the last-registered incremental edge and the latch value via

the 24 V digital inputs 

In addition, the EL5112 enables the measurement of a period, frequency or

velocity with a resolution of 10 ns. A duty cycle measurement of the input

signal in 1-channel mode is implemented.