Beckhoff EL5131 | EtherCAT Terminal, 1-channel encoder interface, incremental

The EL5131 EtherCAT Terminal is an interface for the direct connection of

incremental encoders with differential signals (RS422) or single-ended

signals (TTL and open collector). Two parameterizable 24 V DC push-pull,

tri-state outputs are available, which are set after reaching a specified

count, frequency or speed value. This allows the realization of a digital

cam controller, which uses position or time cams and ensures a precise

response time independent of the fieldbus cycle.

Two additional 24 V digital inputs are 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 error message output of an encoder can be connected and evaluated

via the status input. 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

• parameterizable 2 x 24 V push-pull, tri-state outputs

• digital cam controller with position cams or time cams

• integrated frequency measurement

• optionally usable as 5 V up/down counter

• microincrements

• synchronous reading of the position value via distributed clocks

• timestamp on the last registered incremental edge, latch values and the

output switching limits

In addition, the EL5131 enables the measurement of a frequency or velocity

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

implemented.

With the optional interpolating microincrement functionality, the EL5131 can

provide even more accurate axis positions for dynamic axes.

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). Additionally, timestamps are available for the last registered

incremental edge, the edge at the latch input, the zero pulse track C and the

output switching limits. The use of encoder profiles enables simple and fast

linking of the process data for motion control applications.