Machine data
2.4 Axis-specific machine data
Parameter Manual
272
Operating Instructions, 08/2013, 6FC5397-8EP40-0BA0
Description:
This machine data defines the threshold speed/velocity for spindles/position-
ing/path axes from which the acceleration reduction is to start. The refer-
ence is the defined maximum speed/velocity. The starting point is a
percentage of the maximum values.
Example: MD35220 $MA_ACCEL_REDUCTION_SPEED_POINT = 0.7, the maximum speed is
3000 rpm. Acceleration reduction starts at v_on = 2100 rpm, i.e. the maximum
acceleration capacity is utilized in the speed range 0...2099.99 rpm. Reduced
acceleration is used from 2100 rpm to the maximum speed.
Related to:
MD32000 $MA_MAX_AX_VELO
(maximum axis velocity)
MD35130 $MA_GEAR_STEP_MAX_VELO_LIMIT
(maximum gear stage speed)
MD35230 $MA_ACCEL_REDUCTION_FACTOR
(reduced acceleration)
Description: The machine data contains the factor by which the acceleration of the spin-
dle/positioning/path axes is reduced with reference to the maximum speed/
velocity. The acceleration is reduced by this factor between the threshold
speed/velocity defined in MD35220 $MA_ACCEL_REDUCTION_SPEED_POINT and the
maximum speed/velocity.
Example:
a= 10 rev/s², v_on = 2100 rpm, MD35230 $MA_ACCEL_REDUCTION_FACTOR = 0.3.
Acceleration and deceleration take place within the speed range 0...2099.99
rpm with an acceleration of 10 rev/s². From a speed of 2100 rpm up to the
maximum speed, the acceleration is reduced from 10 rev/s² to 7 rev/s².
MD irrelevant to:
Errors that lead to rapid stop.
Related to:
MD32300 $MA_MAX_AX_ACCEL (axis acceleration)
MD35200 $MA_GEAR_STEP_SPEEDCTRL_ACCEL
(acceleration in speed control mode)
MD35210 $MA_GEAR_STEP_POSCTRL_ACCEL
(acceleration in position control mode)
MD35242 $MA_ACCEL_REDUCTION_SPEED_POINT
(speed for reduced acceleration)
35220 ACCEL_REDUCTION_SPEED_POINT A06, A04 S1,S3,B2
- Speed for reduced acceleration DOUBLE Reset
-
- - 1.0 0.0 1.0 1/1
35230 ACCEL_REDUCTION_FACTOR A06, A04 S1,S3,B2
- Reduced acceleration DOUBLE Reset
CTEQ
- - 0.0 0.0 0.95 1/1
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