Rockwell Automation 8510 AC Spindle Drive System Programming Manual - Manual (Page 30)

Programming
Chapter 2
2-27
TORQUE MODE
This menu selects the steps needed to set up torque mode operation. When
operating in torque mode, the motor must be connected to a speed
controlled load or an external speed regulator must be used. Otherwise, the
motor will be accelerated at a constant commanded torque level until the
drive faults on overspeed.
Important: Torque Mode operation requires the use of the 14 bit A/D
converter that is part of I/O Board versions -Cx or -Dx. To make Torque
Mode work, it is necessary to set the SERVO MODE – A/D Conv Type
parameter to “14 BIT LINEAR.”
Torque Enable
This parameter is used to enable or disable torque mode operation. When
torque mode is enabled, the drive can operate in torque mode whenever
the proper input command is given to activate it. When torque mode is
programmed to the enabled condition, the internal low accel/decel ramp
control will be disabled and the Accel/Decel Rate Select input will be
assigned a new function. Torque mode will now be activated when the
Accel/Decel Rate Select is On. Otherwise, when this input is Off, the
drive operates as a normal velocity control drive in the selected mode.
Possible Choices: DISABLE, ENABLE
Default Value
DISABLE
Max Speed
Defines the motor speed that will cause an overspeed fault when in torque
mode. It is determined by the speed requirements of the application.
Data Range: RPM 00000 to 30000
Default Value 03000
ANALOG CAL
This menu allows selection of two alternate methods to calibrate Analog
Input #2. The torque mode Torque Command can only be applied to this
input. The spindle mode or servo mode velocity commands must be
applied to Analog Input #1.
MEASURE INPUT
Allows selection of the steps required to calibrate the analog input by
actually measuring the value of the applied signal voltages. This is the
preferred method for calibrating the analog input.
Zero Volt In
This parameter requires the user to input the command voltage that is
equal to the zero torque command. When the Select key is pressed, the
control will read the input voltage on Analog Input #2 and use that as
the zero torque reference value. The display will function as a
voltmeter to show the voltage being read on the analog input.
Data Range: VOLT 00.000 to
±
09.999
Default Value 0.000