Siemens SINUMERIK 828D Function Manual

B2: Acceleration
4.2 Functions
Basic Functions
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
221
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
4.2.3 Constant travel time (channel-specific)
4.2.3.1 General Information
Overview
In the case of acceleration without jerk limitation, sudden acceleration of 2 * a
max
occurs on switchover between
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)
Note
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.

Siemens SINUMERIK 828D Specifications

General

Brand	Siemens
Model	SINUMERIK 828D
Category	Control Systems
Language	English