Incremental encoder simulation terminal (pulse train) EL2522
Signal LED A1
Signal LED C1
Signal LED A2
Signal LED B1
Signal LED B2
Power contact
+24 V
Power contact 0 V
A2+, C1+ 
A2–, C1–
Top view 
Contact assembly 
extended shock and vibration range

EL2522 | Incremental encoder simulation terminal (pulse train)

The EL2522 incremental encoder simulation terminal (pulse train) outputs a signal that is modulated via the frequency signal on two channels with four outputs. The signal can be used to control motor drivers or other signal receivers, which are controlled by single cycles. As with the EL2521, the pulse sequence and pulse number can be directly specified via the process data in the frequency. Alternatively, the integrated travel distance control can be used. For each channel the operating mode (frequency modulation, pulse/direction specification and incremental encoder simulation) can be selected. In addition, the EL2522 can control three output channels in the ABC encoder simulation.

Technical data EL2522
Connection technology pulse train (frequency output)
Number of outputs 2 channel A/B, 1 channel A/B/C (4 differential outputs)
Distributed clocks yes
Output specification RS422, differential, 50 mA, min. 220 Ω load
Short circuit current short-circuit-proof
Base frequency 0…4 MHz, 50 kHz default
Resolution 16 bit (incl. sign, scaled via the set frequency range)
Step size min. 10 ns (internal)
Current consumption E-bus typ. 120 mA
Electrical isolation 500 V (E-bus/field potential)
Current consumption power contacts typ. 50 mA (load-dependent)
Special features operating modes as with EL2521, ABC incremental encoder simulation including interfacing with TwinCAT NC
Weight approx. 50 g
Operating/storage temperature 0…+55 °C/-25…+85 °C
Relative humidity 95 %, no condensation
Vibration/shock resistance conforms to EN 60068-2-6/EN 60068-2-27
EMC immunity/emission conforms to EN 61000-6-2/EN 61000-6-4
Protect. class/installation pos. IP 20/variable
Approvals CE, UL