2-channel incremental encoder interface, 5 V single-ended (TTL, Open Collector) EL5122
A1
B1
A2
B2
PowerEnc.
gate/latch 1
Run
Diag
gate/latch 2
Input A1 
Input B1 
Input A2 
Input B2
  
Encoder
supply +UE
Encoder
supply -U0
latch/gate 1 
Encoder
supply +UE2
Encoder
supply -U02
latch/gate 2
Top view 
Contact assembly 
XFC – eXtreme Fast Control

EL5122 | 2-channel incremental encoder interface, 5 V single-ended (TTL, Open Collector)

The 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. Due to internal pull-up resistors, no external circuitry is necessary for Open collector evaluation. Per channel a 24 V digital input is available for storing, blocking and setting the counter status. It is also possible to set the counter to a predefined value or to lock the counter directly through the process data. The 5 V, 12 V or 24 V supply of the encoder can be provided directly via the terminal connection points.

 

Special features:

 

In addition, the EL5122 enables the measurement of a period, frequency or velocity with a resolution of 10 ns. 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). The use of encoder profiles enables simple and fast linking of the process data for Motion Control applications.

Technical data EL5122
Technology incremental encoder interface, single-ended (TTL, Open Collector), counter, pulse generator
Number of channels 2
Encoder connection 2 x A, B: Single-ended connection (TTL, Open Collector): A, B, counter, pulse generator: A, B
Additional inputs gate/latch (24 V DC, TON > 1 µs) per channel
Encoder operating voltage 5 V DC (default), 12 V DC, 24 V DC switchable, 0.3 A total current (generated from the 24 V DC power contacts)
Counter 32 bit (default), 16/32 bit switchable
Limit frequency TTL: 4 million increments/s with 4-fold evaluation, corresponding to 1 MHz, Open Collector: 400 kilo increments/s with 4-fold evaluation, corresponding to 100 kHz
Quadrature decoder 4-fold evaluation (default), 2-fold-, 1-fold evaluation switchable
Current consumption power contacts typ. 10 mA + load
Current consumption E-bus typ. 190 mA
Wiring fail indication
Distributed clocks yes
Special features period duration, frequency and speed measurement
Weight approx. 50 g
Electrical isolation 500 V (E-bus/field potential)
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
Protect. class/installation pos. IP 20/variable
EMC immunity/emission conforms to EN 61000-6-2/EN 61000-6-4
Approvals/markings CE
Related products
EL5102 2-channel incremental encoder interface, 5 V (RS422, TTL, Open Collector)
EL5112 2-channel incremental encoder interface, 5 V (2 x AB or 1 x ABC RS422, TTL)
EL5131 2-channel incremental encoder interface, 5 V with two parameterizable 24 V DC outputs