SSI encoder 750-630
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Terminal Configuration:
Input
Type
Function
Signal D+ and Signal D-
Input, RS422
Positional data from encoder, Graycode.
Signal Cl+ and Signal CL-
Output, RS422
Clock signal output for communications interface.
+24 V DC
Input
24 V DC supply voltage to module, field connection.
0 V DC
Input
0 V DC supply voltage return to module, field
connection.
The use of this module in conjunction with a SSI encoder provides direct positional
information rather than the type of data resultant from incremental type encoders.
Absolute encoders are comprised of several data disks which generate a data
word which is unique through out the 360 degrees of rotation. The data format
is a modified binary pattern in either Graycode or Dualcode.
The resolution of the sensor depends upon the configuration of the sensor and
the physical number of revolutions in the motion profile. Since the basis of the
encoder is to provide absolute positional information based upon a mechanical
configuration limited to one revolution or less. The maximum resolution of this
module is 24 bit.
The frequency of the data signal input to the SSI module is maintained at 125 kHz.
Listed below are the recommended cable lengths for the various clock signal Baud
rates.
Baud rate
Maximum
cable length
100 kHz
400 meters
200 kHz
200 meters
300 kHz
100 meters
400 kHz
50 meters
