Rockwell Automation 8510 AC Spindle Drive System User Manual - Manual (Page 68)

Interface Signal Descriptions
Chapter 7
7-64
Improper command sequences that would cause a soft fault are; application
of the Forward Run, Reverse Run, or Orient commands prior to applying
the Drive Enable input. Application of the Motor Winding Select Com-
mand - Low when the present motor speed exceeds the maximum
allowable motor speed on the low speed winding would also cause a soft
fault.
Zero Speed Indicator – CN9-26, 27
This output will be turned On when the motor speed drops below 20 rpm.
This output will be turned Off at 25 rpm.
At Set Speed Indicator – CN9-28, 29
This output will be turned On when the actual motor speed is within a
percentage of the commanded speed. The percentage is determined by the
percent of commanded speed value programmed with the At-Set-Speed
parameter. The actual turn On band is the greater of the programmed
commanded speed band or 25 rpm. If either the Forward Run or Reverse
Run commands are On, this signal will be output at any operating speed
(down to zero) when the conditions are satisfied.
Speed Level Indicator – CN9-30, 31
This output is turned On any time the actual motor speed is below the value
programmed for the Speed Detect parameter.
Load Level Indicator – CN9-32, 33
This output is turned On any time the commanded torque exceeds a percent
of available torque. This is determined by the load value programmed for
the Load Detect parameter.
In-position – CN9-34, 35
The In-Position output is turned On to indicate that the spindle orient cycle
has been completed and the spindle is within the programmed distance of
the target position. The distance from the target position is programmed
with the In-Position parameter.
Analog Inputs
Two analog inputs are available for providing analog speed or torque
commands to the drive. Which analog inputs are used and for which input
signals is determined by programmable parameters and the drive operating
mode selected.
Analog Input #1 – CN9-36, 37, 38
In spindle mode, the drive can be configured to accept either an analog or a
digital speed command. If the SPINDLE MODE – Cmnd Source parameter
is set to “ANALOG,” the input command must be applied to this input.