Beckhoff EL5021-0090 | EtherCAT Terminal, 1-channel encoder interface, SinCos

The EL5021-0090 EtherCAT Terminal is used for the direct connection of a

measuring probe or encoder with sinusoidal, differential voltage output 1

VPP. Input frequencies of max. 250 kHz can be evaluated. 

The current counter reading can be zeroed (reset) or stored separately via

the C track of the encoder, which is also called reference mark. The 5 V

supply to the encoder is provided directly via the terminal connection points.

The EL5021-0090 features amplitude and frequency error detection of the

input signals.

The EL5021-0090 also supports TwinSAFE SC (TwinSAFE Single Channel). 

Thereby it is possible to make use of standard signals for safety tasks in

any network or fieldbus.

Special features:

• store, lock, set counter

• diagnosis: frequency error and amplitude error of input signals

• integrated frequency measurement

• integrated 5 V DC encoder operating voltage

The analog input signal is processed, interpolated and made available as

a 32-bit count value. The count value is a combination of the number of

whole periods, max. 24 bits, and the value within one sine period, with

max. 13-bit resolution. The EL5021-0090 also provides an internal

frequency measurement. 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).