Siemens SINUMERIK 840D sl Function Manual page 12

Contents
4.12.3.5 Signals to channel..................................................................................................................... 348
4.12.3.6 Signals from channel................................................................................................................. 349
4.12.3.7 Signals to axis/spindle............................................................................................................... 350
4.12.3.8 Signals from axis/spindle .......................................................................................................... 350
5 Compensations (K3) .............................................................................................................................. 351
5.1 Brief description ........................................................................................................................ 351
5.2 Temperature compensation ...................................................................................................... 353
5.2.1 General information................................................................................................................... 353
5.2.2 Temperature compensation parameters................................................................................... 355
5.3 Backlash compensation ............................................................................................................ 360
5.4 Interpolatory compensation....................................................................................................... 363
5.4.1 General information................................................................................................................... 363
5.4.2 Measuring system error compensation (MSEC) ....................................................................... 367
5.4.3 Sag compensation and angularity error compensation ............................................................ 372
5.4.4 Extension of the sag compensation with NCU link ................................................................... 389
5.4.5 Special features of interpolatory compensation ........................................................................ 398
5.5 Dynamic feedforward control (following error compensation)................................................... 400
5.5.1 General information................................................................................................................... 400
5.5.2 Forward feed control for command- and PLC axes .................................................................. 403
5.5.3 Speed feedforward control ........................................................................................................ 405
5.5.4 Torque feedforward control ....................................................................................................... 409
5.6 Friction compensation (quadrant error compensation) ............................................................. 411
5.6.1 General information................................................................................................................... 411
5.6.2 Conventional friction compensation .......................................................................................... 413
5.6.3 Commissioning of conventional friction compensation ............................................................. 415
5.7 Neural quadrant error compensation ........................................................................................ 423
5.7.1 Fundamentals ........................................................................................................................... 423
5.7.2 Parameterization of neural QEC ............................................................................................... 425
5.7.3 Learning the neural network...................................................................................................... 432
5.7.4 Commissioning of neural QEC.................................................................................................. 436
5.7.5 Further optimization and intervention options ........................................................................... 439
5.7.6 Quick commissioning ................................................................................................................ 445
5.8 Circularity test ........................................................................................................................... 448
5.9 Electronic weight compensation (vertical axis) ......................................................................... 453
5.9.1 Electronic counterweight function ............................................................................................. 453
5.9.2 Effect on electronic counterweight function of rebooting from HMI .......................................... 455
5.9.3 Electronic weight compensation with travel to fixed stop.......................................................... 457
5.10 Supplementary conditions......................................................................................................... 460
5.10.1 Availability ................................................................................................................................. 460
5.11 Data lists.................................................................................................................................... 462
5.11.1 Machine data............................................................................................................................. 462
5.11.1.1 SIMODRIVE 611D machine data.............................................................................................. 462
5.11.1.2 General machine data............................................................................................................... 462
5.11.1.3 Channel-specific machine data................................................................................................. 462
5.11.1.4 Axis/Spindle-specific machine data .......................................................................................... 462
5.11.2 Setting data ............................................................................................................................... 463
5.11.2.1 General setting data.................................................................................................................. 463
5.11.2.2 Axis/spindle-specific setting data .............................................................................................. 463
5.11.3 Signals....................................................................................................................................... 464
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Function Manual, 03/2009, 6FC5397-1BP10-4BA0
Extended Functions