GE GFK-2958E, User Manual

Page: 222 / 425

Chapter 5 Detailed Descriptions of I/O Modules
GFK-2958E RSTi-EP User Manual 218
5.18 SSI Encoder Interface Module EP- 5311
SSI Encoder Interface Module 5311 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 synchronise 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 (I
IN
).
Note: The SSI encoder must be connected using a shielded wire (maximum length 320 m with 125
kHz). The shielding has to be designed as described in the sections,
Earthing (functional earth
FE) and Shielding .