Rockwell Automation 8510 AC Spindle Drive System User Manual - Manual (Page 65)

Interface Signal Descriptions
Chapter 7
7-61
When the Torque Enable parameter is set to “Enable,” the Acc Rate #2
parameter is disabled. The Acc Rate #1 parameter is still active in spindle
mode.
Spindle/Servo Mode Select – CN9-10
This input selects the velocity loop configuration and gains for the spindle
or servo operating modes. Refer to page 1-3 for a description of the various
control modes.
When this input is Off, the spindle mode is active. This mode is designed
for basic velocity control without an external control loop. The velocity
input must be an analog signal at Analog Input #1 or a 16 bit digital signal
on the optional Digital Speed/Orient Position inputs.
When this input is On, the servo mode is active. The servo mode is
designed for use in a closed position loop system. This mode should be
used during spindle orient operation from the CNC and during C-axis
operation on a turning center. The velocity command must be an analog
signal with the loop programmed to use either Analog Input #1 or #2
(Analog Input #2 can not be used if TORQUE MODE – Torque Enable has
been programmed).
Servo Input Scaling (Low/High) – CN9-11
This input is used to switch the scaling of the analog command input while
in the servo mode.
When this input is turned Off, the maximum motor speed at maximum
analog command is determined by the LO SPD RANGE parameter menu.
When this input is turned On, the maximum motor speed is determined by
the HI SPD RANGE parameter menu. Independent loop gain parameter sets
can also be programmed for each of these speed ranges.
Orient Command – CN9-13
Turning this input On will activate the integral spindle orient function. The
drive velocity control loops will be switched to high speed range servo
mode gains and the position loop will be closed in the drive using the
spindle position feedback device. Deceleration and stopping will be
controlled by the orient function software.
When this input is turned Off, the drive will return to the standard velocity
control mode in less than 30 ms and resume operation at the commanded
speed.
The programmed value for the ORIENT TUNE – Hold Position parameter
will determine whether the spindle will be in a free-turning or a servo lock
condition after the orient operation is completed. If the parameter is set to
“Torque Hold,” the drive system will supply holding torque to maintain the
orient position as long as the Orient Command is On.
If the Forward and Reverse Run commands are turned Off during orient,
the orient operation will be terminated and the motor will be regeneratively
braked to a stop.