HEIDENHAIN MANUALPLUS 620 - Page 1100

1100 HEIDENHAIN Technical Manual MANUALplus 620
Determining the
acceleration
The following machine parameters influence whether the maximum possible
acceleration can be reached:
 Maximum permissible axis acceleration (MP_maxAcceleration)
 Maximum jerk on the path (MP_maxPathJerk)
 Maximum jerk on the path during rapid traverse (MP_maxPathJerkHi)
 Clamp an object of maximum permissible weight on the machine table.
 Increase the acceleration (MP_maxAcceleration parameter) step by step
by a value of 0.5.
 The maximum possible acceleration is achieved at the point where the
current I (nom) reaches the limitation. In the example below:
15 A motor current at an acceleration of 16 m/s
2
 Limit the maximum acceleration to approx. 80% of the maximum current of
the motor or power stage, e.g.:
15 A · 80 % = 12 A
Temporary machine parameters in the configuration editor and input
value:
Axes
ParameterSets
[Key name of the parameter set]
CfgFeedLimits
maxAcceleration: 0.5
CfgLaAxis
axJerk: 500
Channels
CH_NC
CfgLaPath
maxPathJerk: 999999
maxPathJerkHi: 999999