EL5102 - Introduction
2-channel incremental encoder interface terminal
The EL5102 EtherCAT Terminal is an interface for the direct connection of two incremental encoders with differential inputs (RS422) or single-ended inputs (TTL and Open Collector), parameterizable per channel. The encoders can be supplied with power directly from the terminal. The EL5102 offers two separate encoder supply voltages, which can be switched between 5 VDC, 12 VDC or 24 VDC.
A 32-bit counter with quadrature decoder is available for each channel. Furthermore, the counter value can be stored separately or set to a preset value via the inputs (latch, gate/latch and zero pulse C input). In addition, it is possible to lock the counter, either via the Gate/Latch input or directly via the process data. A status signal from the incremental encoder can be connected to the status input of the terminal.
The EL5102 enables measurement of a period, a frequency and a speed with a resolution of 10 ns. Duty cycle measurement of the incoming signal is also implemented.
Due to the optional interpolating micro-increment function, the EL5102 can supply even more precise axis positions for dynamic axes. In addition to that it supports the synchronous reading of the encoder value together with other input data in the EtherCAT system via high-precision EtherCAT Distributed Clocks (DC). In addition, the EL5102 offers a timestamp function, so that the last registered incremental edge, i.e. the edge at the latch input and the zero pulse track C, can be output with a timestamp.