HEIDENHAIN CNC Pilot 4290 Pilot - Manual (Page 48)

48
Speed limitation
G26: Spindle; Gx26: Spindle x (x: 1...3)
G26/Gx26 limits the speed of spindle x. The speed limit remains in
effect until program end or until it is replaced by a new G26/Gx26.
Parameters
S:
(Maximum) speed
F
e
ed r
a
te
and spindle speed Acceleration (slope) G48
G48 specifies the approaching acceleration, braking acceleration, and
the maximum feed rate. G48 is a modal function.
Without G48 the following parameter values apply:
■ Acceleration at approach/deceleration at departure: Machine
parameter 1105 ff ”Acceleration/deceleration of linear axis”
■ and the maximum feed rate from: Machine Parameter 1101 ff ”Maxi-
mum axis speed”
Parameters
E:
Acceleration at approach – no input: the parameter values take
effect.
F: Deceleration at departure – no input: the parameter values take
effect
H: Programmed acceleration On/Off
■ H=0: switch off programmed acceleration after next traverse
■ H=1: switch on programmed acceleration
P: Maximum feed rate – no input: Parameter value
The ”absolute maximal speed” is specified
in machine parameter 805 and following.
If S > parameter value, the parameter value
takes applies.
• If P > parameter value, the parameter
value applies.
• ”E, F and P” refer to the X or Z axis. The
acceleration/feed rate for the slide is not
higher with axis-parallel traverses.