Siemens SINUMERIK 840Di Function Manual page 230

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2.10 Acceleration margin for radial acceleration (channel-specific)

When, for example, a value of 0.75 is applied, 75% of the axis-specific acceleration will be

made available for radial acceleration and 25% for path acceleration.

The corresponding maximum values are generally calculated as follows:

Radial acceleration =

MD20602 $MC_CURV_EFFECT_ON_PATH_ACCEL * MD32300 $MA_MAX_AX_ACCEL

Path acceleration =

(1 - MD20602 $MC_CURV_EFFECT_ON_PATH_ACCEL) * MD32300 $MA_MAX_AX_ACCEL

The following machine parameters apply:

• MD32300 $MA_MAX_AX_ACCEL for all geometry axes: 3 m/s

• Maximum path velocity with a path radius of 10 mm due to mechanical constraints of the

The radial acceleration is calculated as follows:

The acceleration margin is set as follows:

Linear motions

The acceleration margin referred to above is ineffective in the case of linear motions (linear

interpolation) without active kinematic transformation.

machine: 5 m/min.

Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0

Acceleration (B2)

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