Rockwell Automation 8520-ARM2 9/Series CNC AMP Reference Manual Documentation Set - Manual (Page 370)

Spindle 3 Parameters
Chapter 14
14-6
Function
This parameter is used to set the maximum DAC output voltage for each
gear range of the spindle.
The maximum spindle rpm for each gear range is defined by the parameter
Maximum Spindle Speed. It is necessary to determine what DAC output
voltage is required to attain this maximum speed.
This information may be provided with the spindle drive. It can also be
determined through testing. By connecting a battery box to the drive and a
tachometer to the spindle, the command voltages required to produce
specific spindle speeds in each gear can be plotted. These same “command
voltages” is sent to the drive from the DAC output when the battery box is
replaced with the proper cabling.
Parameter Parameter
Number
Voltage at Max for Gear 1 [840]
Voltage at Max for Gear 2 [841]
Voltage at Max for Gear 3 [842]
Voltage at Max for Gear 4 [843]
Voltage at Max for Gear 5 [844]
Voltage at Max for Gear 6 [845]
Voltage at Max for Gear 7 [846]
Voltage at Max for Gear 8 [847]
Range
--10.0000 to 10.0000 volts
Notes
This feature is not available on the 9/230, 9/260 or 9/440 controls.
This parameter must be set for each spindle axis.
14.3
Voltage at Max for
Gears 1 - 8