Rockwell Automation 8520 9/Series CNC Lathe - Manual (Page 34)

Basic Control Operation
Chapter 2
2-12
Table 2.D
Functions of the Buttons on the Push-Button MTB Panel
Switch or Button Name How It Works = Default for Push-Button MTB Panel
MODE SELECT Selects the operation mode
AUTO ---- automatic mode
MANUAL ---- manual mode
MDI ---- manual data input mode
JOG SELECT Selects the jog method to be active in manual mode
HANDWHEEL ---- HPG (hand pulse generator) jog
INCREMENTAL ---- incremental jog
CONTINUOUS ---- continuous jog
HOME ---- machine home
SPEED/MULTIPLY Selects an axis feedrate or axis feed amount multiplication ratio used in the manual mode. Each
selection modifies the active feedrate by a value set in AMP. Modification also depends on the setting
of <JOG SELECT> as described below:
·HANDWHEEL
When in handwheel jog mode, SPEED/MULTIPLY alters the handwheel resolution by a factor
determined in AMP. Your system installer sets the value for:
- LOW X1
- MEDL X10
- MEDL X100
You cannot use the values listed below for handwheel jog:
- MEDH X1000
- HIGH X10000
·INCREMENTAL
When in incremental jog mode, SPEED/MULTIPLY alters the incremental jog distance by a factor set
in AMP by your system installer. Your system installer sets a value for the selections. The
incremental jog speed is fixed to medium but can still be controlled by
<FEEDRATE OVERRIDE>
.
·CONTINUOUS
When in continuous jog mode, SPEED/MULTIPLY acts as a feedrate selection switch which has
values set in AMP by your system installer. Your system installer sets a value for all 5 selections
independently for each axis. <FEEDRATE OVERRIDE> can be used for speed adjustments.
Important: The values for the different <SPEED/MULTIPLY> selections are configured by
your system installer.
SPINDLE SPEED OVERRIDE Selects the override for programmed spindle speeds in 5% increments within a range of 50% to 120%.
SPINDLE or
SPINDLE DIRECTION
Selects spindle rotation, clockwise (CW), spindle stop (OFF), counterclockwise (CCW). Can be
overridden by any programmed spindle direction command.
FEEDRATE OVERRIDE Selects a feedrate override percentage for the feedrate programmed with an F word in any of the
feedrates modes (G93/G94/G95) and the reciprocation feedrate programmed with an E word.
<FEEDRATE OVERRIDE> has a range of 0% to 150% of the programmed feedrate and alters the
programmed feedrate in 10% increments. When set to 0%, the control is effectively in feedhold.
RAPID FEEDRATE OVERRIDE Selects the override for rapid feedrates. Select from F1, 25%, 50%, and 100% where F1 is a rapid
feedrate override setting established in AMP by the system installer.
EMERGENCY STOP This button stops machine operation and disables the spindle and axis drives when pressed.
E-STOP RESET This button resets an emergency stop condition when pressed. Before pressing this button the
condition that caused the E-Stop should be resolved.
CYCLE START The control begins or resumes part program execution, MDI program execution, or program check
when this button is pressed.