Siemens SINUMERIK 840D sl Function Manual page 12

Contents
4.12.3.5 Signals to channel..................................................................................................................... 335
4.12.3.6 Signals from channel................................................................................................................. 335
4.12.3.7 Signals to axis/spindle............................................................................................................... 336
4.12.3.8 Signals from axis/spindle .......................................................................................................... 336
5 Compensations (K3) .............................................................................................................................. 337
5.1 Brief Description........................................................................................................................ 337
5.2 Temperature compensation ...................................................................................................... 339
5.2.1 General information................................................................................................................... 339
5.2.2 Temperature compensation parameters................................................................................... 341
5.3 Backlash compensation ............................................................................................................ 346
5.4 Interpolatory compensation....................................................................................................... 349
5.4.1 General information................................................................................................................... 349
5.4.2 Measuring system error compensation (MSEC) ....................................................................... 353
5.4.3 Sag compensation and angularity error compensation ............................................................ 357
5.4.4 Extension of the sag compensation with NCU link ................................................................... 373
5.4.5 Special features of interpolatory compensation ........................................................................ 381
5.5 Dynamic feedforward control (following error compensation)................................................... 383
5.5.1 General information................................................................................................................... 383
5.5.2 Forward feed control for command- and PLC axes .................................................................. 386
5.5.3 Speed feedforward control ........................................................................................................ 388
5.5.4 Torque feedforward control ....................................................................................................... 391
5.6 Friction compensation (quadrant error compensation) ............................................................. 394
5.6.1 General information................................................................................................................... 394
5.6.2 Conventional friction compensation .......................................................................................... 396
5.6.3 Commissioning of conventional friction compensation ............................................................. 398
5.7 Neural quadrant error compensation ........................................................................................ 405
5.7.1 Fundamentals ........................................................................................................................... 405
5.7.2 Parameterization of neural QEC ............................................................................................... 407
5.7.3 Learning the neural network...................................................................................................... 414
5.7.4 Commissioning of neural QEC.................................................................................................. 418
5.7.5 Further optimization and intervention options ........................................................................... 421
5.7.6 Quick commissioning ................................................................................................................ 426
5.8 Circularity test ........................................................................................................................... 429
5.9 Electronic weight compensation (vertical axis) ......................................................................... 434
5.9.1 Electronic counterweight function ............................................................................................. 434
5.9.2 Effect on electronic counterweight function of rebooting from HMI .......................................... 436
5.9.3 Electronic weight compensation with travel to fixed stop.......................................................... 438
5.10 Supplementary conditions......................................................................................................... 441
5.10.1 Availability ................................................................................................................................. 441
5.11 Data lists.................................................................................................................................... 443
5.11.1 Machine data............................................................................................................................. 443
5.11.1.1 SIMODRIVE 611D machine data.............................................................................................. 443
5.11.1.2 General machine data............................................................................................................... 443
5.11.1.3 Channel-specific machine data................................................................................................. 443
5.11.2 Setting data ............................................................................................................................... 444
5.11.2.1 General setting data.................................................................................................................. 444
5.11.2.2 Axis/spindle-specific setting data .............................................................................................. 444
5.11.3 Signals....................................................................................................................................... 445
5.11.3.1 Signals from NC ........................................................................................................................ 445
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Function Manual, 01/2008, 6FC5397-1BP10-3BA0
Extended Functions