9.4.7
Setting the acceleration feedforward
The acceleration feed forward is set to achieve better dynamic properties af‐
ter the Kv factor has been set. The NC program is again used to measure the
following lag distance S-0-0189. Increase the value of the acceleration feed‐
forward S-0-0348 as long as the maximum occurring following distance de‐
creases.
Prior to optimization, the maximum occurring following distance S-0-0189 =
0.04 mm.
Please note the change in the following lag distance while the value of the
acceleration feedforward is slowly increased:
1. S-0-0348 = 2, max. lag distance (S-0-0189) = 0.034 mm
2. S-0-0348 = 4, max. following distance (S-0-0189) = 0.028 mm
3. S-0-0348 = 6, max. following distance (S-0-0189) = 0.022 mm
4. S-0-0348 = 8, max. following distance (S-0-0189) = 0.016 mm
5. S-0-0348 = 10, max. following distance (S-0-0189) = 0.013 mm
The effect of the acceleration feedforward starts to have a negative effect at a
value of 10. For this reason, the optimal value here is 8.
DOK-MTXMIC-EASY*******-CO06-EN-P
Bosch Rexroth AG
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IndraMotion MTX micro Easy Setup for Standard Turning and Milling Machines
Commissioning the drives
