Spindle Control - Siemens SINUMERIK 840D Operator's Manual

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Operator Components/Sequence of Operations
2.4 Machine control panel keys

2.4.4 Spindle control

Spindle Stop
*
Spindle Start
Machine manufacturer
2-44
Spindle override (spindle speed override switch)
· The rotary switch with latch positions allows you to increase or
decrease the programmed spindle speed "S" (equivalent to 100%).
· The set spindle speed value "S" is output as an absolute value and
a percentage in the "Spindles" display (vertical softkey in basic
display).
Control range:
50% to 120% of programmed spindle speed
Increment:
5% between latch positions
Spindle Stop
When you press the "Spindle Stop" key:
· The spindle is decelerated down to zero speed and
· The associated LED lights up as soon as "Spindle stop" is
reached.
Example:
· To change a tool.
· To enter S, T, H, M functions during setup.
Spindle Start
When you press the "Spindle Start" key:
· The spindle speed is accelerated to the value defined in the
program and
· The associated LED lights up as soon as "Spindle Start" has been
accepted by the control.
- The specified increment and the control range apply to standard
machine data (MD). These MD can be changed by the machine-
tool manufacturer to suit the application.
- The maximum spindle speed and the values for the spindle speed
override position are defined in the machine data and setting data
(see information supplied by the machine-tool manufacturer).
SINUMERIK 840D/840Di/810D Operator's Guide HMI Advanced (BAD) – 03.04 Edition
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03.04
Ó Siemens AG, 2004. All rights reserved