Introduction
1-channel encoder interface, incremental 5 V DC, 5 MHz, with 2 x digital output 24 V DC
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 VDC push-pull, tristate outputs are available. These are set after a specified count, frequency or velocity value is reached. This allows an exact reaction time independent of the fieldbus cycle.
Two additional 24 V digital inputs are available for saving, locking and setting the counter value. Furthermore, there is an option to set the counter value to a specified value or to lock the counter directly via the process data.
The alarm output of an encoder can be connected and evaluated via the Status Input. The encoders can be supplied with 5 V, 12 V or 24 V directly via the connection points of the terminal.
The EL5131 allows the measurement of a period, frequency and velocity with a resolution of 10 ns. Additionally a duty cycle measurement of the incoming signal is implemented.
Due to the optional interpolating microincrement function, the EL5131 can supply even more precise axis positions for dynamic axes. Furthermore, it supports synchronous reading of the encoder value together with other input data in the EtherCAT system via the high-precision EtherCAT Distributed Clocks (DC). In addition, timestamps for the last registered incremental edge, the edge at the latch input, the zero pulse track C and the output switching limits are available.
The use of encoder profiles allows the simple and fast linking of the process data to the Motion Control application.