Rockwell Automation 8510 AC Spindle Drive System User Manual - Manual (Page 66)

Interface Signal Descriptions
Chapter 7
7-62
If the orient operation is terminated by removing either the Forward or
Reverse Run commands, the orient cycle will not automatically resume
when the Forward or Reverse Run commands are turned On. The orient
command must be applied after the Forward/Reverse Run commands.
Gear Ratio Active #1, #2 – CN9-14, 15
Refer to page 1-4 for a description of this function. These two inputs
inform the drive of the gear range selected on the machine. Based on these
inputs, the drive will select the appropriate group of programmed
parameters for optimized performance in each gear range. Up to four gear
ranges can be used.
Gear Ratio Active Input #1 #2
Gear Range 1 Selected Off Off
Gear Range 2 Selected On Off
Gear Range 3 Selected Off On
Gear Range 4 Selected 1 On On
1 Not available when a dual winding motor is used.
Motor Winding Select (Low/High) – CN9-16
Refer to page 1-6 for a description of this function. When this input is Off,
a two winding motor will be operating with the low speed winding.
When the input is On, the high speed winding of a two winding motor will
be selected.
If the drive is running and this input is turned On, the drive will initiate the
winding change action in less than 30 ms.
If the drive is running and this input is turned Off, the winding change
action will be initiated in less than 30 ms, if the motor speed is within the
speed range of the low speed winding. If the current speed is faster than the
maximum speed on the low speed winding, the winding change will be
delayed until the commanded (and actual) motor speed is reduced to a
speed that is within the operating range of the low speed winding.
Within 150-200 ms after beginning the winding change operation, the
motor will resume supplying torque. Then within 250 ms, the output that
indicates which winding is selected will change state. Finally, within about
750 ms, the system will have returned to a stable, fully controlled
operation.
Changing windings will simultaneously select the appropriate new set of
drive set-up parameters. In most systems, it will be desirable to have the
same velocity command scaling for each winding. Having the same scaling
will make it possible to command a speed greater than the maximum
achievable speed on the low speed winding. If the low speed winding is
selected and the commanded speed is greater than the maximum achievable
speed with that winding, the drive will clamp the command at the
maximum achievable speed.