Servo Dynamics DigiDrive 2000 Series, Информационное руководство

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Chapter D - Setting to work
Rev. A 10-99
DigiDrive Manual Series 2000 / 4000
Pg 41
Servo Dynamics Corp. 21541-D Nordhoff St. Chatsworth, CA 91311 www.servodynamics.com
Simulated incremental encoder signals provided on connector XENCODER:
The provided signals A, A / B, B / Z, Z / and GND are similar to the signals of an incremental
encoder signal with differential outputs. The line driver used on-board is type 75172. The line
receiver of the position controller should be type 75175.
These signals are always present and do not require any external supply.
Incremental encoder signals read on connector XENCODER:
The read signals AI, AI/ BI, BI/ ZI, ZI/ and GND are interpreted as incremental encoder signals
with differential outputs. The line receiver used on-board is type 75175.
Encoder cable wiring:
The GND signal should be common to the position controller and to the servo-amplifier.
The cable connecting the position controller to the servo-amplifier should be shielded with
twisted pairs for differential input and output. The shield must be connected to both the position
controller and the amplifier. It should be noted that the contact from the shield to the metallic
case of the amplifier plug-in connector (XENCODER) and the contact from the shield to the
position controller metallic cabinet must be made by using as much contact area as possible.
The use of "Pig Tail" on the shield should be avoided.
1.3.4 XSERIAL 232 and XSERIAL 485
The serial link is used to set or monitor drive parameters stored in non-volatile memory using the
configuration program.
The serial links could be also used to down-load an up-dated firmware or an other firmware
version.