EL5122 - Introduction
2-channel incremental encoder interface, 5 V single-ended (TTL, Open Collector)
Fig.4: EL5122The EL5122 EtherCAT Terminal is an interface for the direct connection of two incremental encoders with A and B track. Encoders with single-ended-signals (TTL and Open Collector) can be connected. Thanks to internal pull-up resistors, no external wiring is required for open collector analysis.
One 24 V digital input is available per channel 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 encoders can be supplied with 5 V, 12 V or 24 V directly via the connection points of the terminal.
Special features:
- Save, lock and set the counter
- Integrated frequency and period measurement
- Optionally usable as a 5 V up/down counter
- Synchronous reading of the position value via Distributed Clocks
In addition, the EL5122 enables the measurement of a period, frequency or velocity with a resolution of 10 ns and supports the synchronous reading of the encoder value together with other input data in the EtherCAT system via the high-precision EtherCAT Distributed Clocks (DC). The use of encoder profiles allows the simple and fast linking of the process data to the Motion Control application.