Axis-Specific ($Ma - Siemens SINUMERIK 840DiE sl Manual

01/2007
Checking the
acceleration
Machine data
Table 11-33 Position control: Machine data
Number
Axis–specific ($MA_ ... )
32100 AX_MOTION_DIR[n]
32110
ENC_FEEDBACK_POL
POSCTRL_GAIN [n]
32200
MAX_AX_ACCEL[n]
32300
32900 DYN_MATCH_ENABLE[n]
DYN_MATCH_TIME [n]
32910
References
© Siemens AG 2007 All Rights Reserved
SINUMERIK 840Di sl Manual (HBIsl) – 01/2007 Edition
The sign of a properly adjusted acceleration of a machine axis is acceleration
and positioning free from overshoot at rapid traverse rate and maximum load
(heavy workpiece).
After the acceleration has been entered, the axis is traversed rapidly and the
actual current values and current setpoint are recorded.
Note
S
SINAMICS
The current actual value/setpoint can be recorded using the STARTER
trace function.
S
SIMODRIVE
The current actual value/setpoint can be recorded using the SimoCom–U
trace function.
The online help provides more detailed information.
This recording shows whether the drive reaches the current limit. Here, the cur-
rent limit can be reached for a short time.
However, the current must be well below the current limit before the rapid tra-
verse velocity or the final position is reached.
Load changes during machining must not cause the current limit to be reached.
Excessive current during machining causes falsification of the contour. For this
reason, the acceleration value should be a little bit less than the maximum ac-
celeration value.
Machine axes can have different acceleration values, even if they interpolate
with each other.
Identifier
Traversing direction
[n]
Actual value sign
Servo gain factor Kv
Axis acceleration
Dynamic response adaptation
Time constant for dynamic matching
/FB/ Description of Functions, Basic Functions,
G2 Velocities, Setpoint/Actual Value Systems, Closed–Loop Control,
Section: Closed–loop control
11 NCK Commissioning with HMI Advanced
11.5 Axes and spindles
Name/remarks Refer-
ence
11-339