User Manual Section 5
GFK-2958L May 2021
Detailed Description of I/O Modules 268
5.20 SSI Encoder Interface Module EP-5311
Figure 150: SSI Encoder
Interface Module EP-5311
Figure 151: Connection Diagram EP-5311
The EP-5311 SSI Encoder Interface module can read differential signals (RS422) from a SSI
encoder. It can be connected as a master directly to the encoder providing the clock. To
synchronize two SSI encoders a second SSI module running in Listening mode can be placed
between the encoder and a master module from which it receives the clock.
The data transfer rate can be between 125 kHz and 2 MHz, the data format can be chosen
between binary or Gray-Code.
Connected sensors can be delivered either with 5Vdc or 24Vdc. Both supply outputs are
protected against overcurrent and must not be used simultaneously.
The communication status is indicated by three LEDs. The module electronics supply the
connected sensor with power from the input current path (IIN).
Note: The SSI encoder must be connected using a shielded wire (maximum length 320m at
125 kHz). The shielding has to be designed as described in Section, Earthing of
Shielded Cables.
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