Rockwell-automation 8520-GUM 9/Series CNC Grinder Operation and Progra Uživatelský manuál stáhnout pdf (Strana 444)

100

101

AxisMotion

Chapter 12

12-72

For systems with no spindle configured, simulated spindle feedback is

provided for the primary spindle. This allows all control features that

require spindle feedback, i.e., IPR feedrate, threading, CSS, to simulate the

feedback from a spindle even through the AMPed system configuration

contained no spindle. The default is 4000 count-per-rev device.

Important: On the 9/260 and 9/290 controls, if spindles 2 and 3 are

programmed but have not been configured as active through AMP, these

errors are given as decode errors on any blocks that have the G12.2 or

G12.3 code:

“SPINDLE 2 NOT CONFIGURED” and/or

“SPINDLE 3 NOT CONFIGURED”

For each possible spindle configured, the control is equipped to perform a

spindle orient operation. This operation is used to rotate the spindle to a

given angle. Typically this may be used to orient the spindle for

load/unload operations, to position a chuck for automatic chuck wrench

operation, etc. This orient operation is not the same as using a spindle as

an axis for positioning. See virtual C axis, section 18.5. An orient

operation is performed separately from axis m otions and cannot be

interpolated with normal axis motions.

There are two types of spindle orients available. They are:

Open-loop orient - The spindle does not use a feedback device for this

type of orient. The final destination of the spindle when performing an

open-loop orient is determined by PAL. Typically there is some form of

hardware switch used to determine the spindle is at the proper position.

When the open-loop orient is performed the spindle i s turned at an

AMP-defined RP M and in an AMP-defined direction.

Closed-loop orient - The spindle must be equipped with a feedback

device. The final destination of the spindle when performing a

closed-l oop orient may be determined in AMP, or entered in a program

block requesting an orient. When the closed-loop orient is performed,

the spindle is positioned at an AMP-defined R PM.

Ifthespindle is: the orient will:

turning completein the samedirectionasthe spindle iscurrentlyrevolving.

Ifthespindlei s turningfaster thantheorientspeeddefined in AMP,it

firstslows tothatorientspeed beforeperformingthe orient.

notturning be performedin whicheverdirection thatresultsin the spindle

reachingthe requiredposition byusingthe shortestangular distance.

12.9.8

Spindle Orientation

(M19, M19.2,M19.3)

1 2 ... 439 440 441 442 443 444 445 446 447 448 449 ... 819 820

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