Constant Travel Time (Channel-Specific); General Information - Siemens SINUMERIK 828D Function Manual

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Axis-specific initial setting

Acceleration without jerk limitation can be set as the axis-specific initial setting for single-axis movements:

MD32420 $MA_JOG_AND_POS_JERK_ENABLE = FALSE

Reset response

The axis-specific initial setting is activated via a reset:

MD32420 $MA_JOG_AND_POS_ENABLE

Constant travel time (channel-specific)

In the case of acceleration without jerk limitation, sudden acceleration of 2 * a

acceleration and braking. In order to avoid this sudden acceleration, a channel-specific constant travel time can

be programmed. The constant travel time defines the time taken to traverse between the acceleration and

braking phases at constant velocity:

MD20500 $MC_CONST_VELO_MIN_TIME (minimum time with constant velocity)

The constant travel time is ineffective:

Active function: Look Ahead

In traversing blocks with a travel time that is less or equal to the interpolation cycle time.

Basic Functions

Function Manual, 09/2011, 6FC5397-0BP40-2BA0

B2: Acceleration

4.2 Functions

occurs on switchover between

Sinumerik 840d sl