Rockwell Automation 1391 USER MNL/DIGITAL AC SERVO DR - Manual (Page 30)

Chapter
5-1
Inputs, Outputs and Switch Settings
Chapter Objectives Chapter 5 contains descriptions of the various inputs and outputs available
on the 1391-DES Digital Servo Drive. Additionally, information for
properly setting the drive switches is provided for reference when you
perform start-up. For information on shunt regulator adjustments, refer to
Chapter 10.
Inputs/Outputs The following paragraphs provide detailed descriptions of the various
inputs and outputs available for the 1391-DES. See Figure 5.2 for terminal
block locations.
Terminal Block - TB1
Resolver Signals (TB1, Terminals 1-10)
These terminals are used for connecting the commutation resolver from the
motor to the drive. Refer to Appendix B for connection details.
Important: Terminal 1 of TB1 must be connected to chassis ground at the
Ground Stud (see Figure 5.2 for Ground Stud location).
Terminal Block - TB2
Please note that there are no connections to TB2-18, 19 & 20.
Velocity Command Input (TB2, Terminals 1, 2)
The drive will accept up to a
±
10V DC velocity command signal to achieve
maximum motor speed. Voltages lower than
±
10V DC can be used by
reprogramming parameter 211 (Analog Velocity Gain). The plus (+) and
minus (–) reference are at terminals 2 and 1, respectively. Shield must be
terminated at one end only. The differential impedance of the velocity
command input is 80k ohms (40k ohms for single ended inputs).
Signal Common (TB2, Terminals 3, 5, 7, 8, 12, 17)
Signal input reference point.
Analog Out 1 (Velocity) (TB2, Terminal 4)
A voltage corresponding to the motor velocity and direction of rotation will
be present between this terminal and signal common (Terminal 5). +1.2V
DC for each 1000 rpm is available. Minimum impedance that can be
placed across this output is 10k ohm.