HEIDENHAIN CNC Pilot 4290 V7.1 - Manual (Page 192)

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4.14 F
e
ed Rat
e
and Spindle Speed
4.14 Feed Rate and Spindle Speed
Rotational speed limiting G26
G26: Main spindle; Gx26: Spindle x (x: 1...3)
The speed limitation remains in effect until the end of the program or
until a new value is programmed for G26/Gx26.
Acceleration (slope) G48
G48 defines acceleration, deceleration, and the maximum feed rate.
G48 is a modal function.
Without G48, these parameters apply:
„ Approach acceleration, braking acceleration: MP 1105, ...
Acceleration/braking of linear axis
„ Maximum feed rate: MP 1101, ... Maximum axis velocity
Example: G26
. . .
N1 G14 Q0
N1 G26 S2000 [maximum speed]
N2 T3 G95 F0.25 G96 S200 M3
N3 G0 X0 Z2
. . .
Parameters
S (Maximum) speed
Actual S > “absolute maximum speed” (MP 805, ff),
applies to the parameter value.
Parameters
E Acceleration starting an axis (default: parameter value)
F Acceleration for braking an axis (default: parameter value)
H Programmed acceleration on/off
„ H=0: Switch off programmed acceleration after next traverse
path
„ H=1: Switch on programmed acceleration
P Maximum feed rate (default: parameter value)
„ If P > parameter value, the parameter value applies.
„ E, F and P refer to the X or Z axis. The acceleration/feed-
rate of the slide is higher for non-paraxial paths of
traverse.