Rockwell Automation 1771-QC , D17716.5.25 SER/B SERVO POS - Manual (Page 72)

Installing the Assembly
Chapter 6
6Ć22
3. Connect the common to terminal 5.
4. Connect the shield to ground at the I/O chassis.
Connecting Velocity Command
Connect the analog velocity command output signal from terminals 3 and
4 on the right wiring arm to the corresponding terminals of the servo
drive. Reversing these connections reverses the direction the axis moves
in response to the velocity command. Connect this signal so that the
direction of motion that results from it matches the correct direction of
motion as you have defined it.
Connect the shield to ground at the servo drive end.