Siemens sinumerik 840D sl Function Manual

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Contents

Special functions: Clearance Control (TE1)Function Manual, 11/2006, 6FC5397-2BP10-2BA0 3Table of contents1 Brief description ......................................................................................................................................... 52 Detailed description ................................................................................................................................... 72.1 Function description.......................................................................................................................72.2 Clearance control.........................................................................................................................102.2.1 Control dynamics .........................................................................................................................102.2.2 Velocity feedforward control.........................................................................................................122.2.3 Control loop structure...................................................................................................................142.2.4 Compensation vector ...................................................................................................................152.3 Technological features of clearance control ................................................................................182.4 Sensor collision monitoring ..........................................................................................................192.5 Startup..........................................................................................................................................202.5.1 Activating the technological function............................................................................................202.5.2 Configuring the memory...............................................................................................................202.5.3 Parameter settings for input signals (840D) ................................................................................212.5.4 Parameter settings for input signals (840Di)................................................................................222.5.5 Parameters of the programmable compensation vector..............................................................232.5.6 Parameter settings for clearance control .....................................................................................242.5.7 Starting up clearance control .......................................................................................................262.6 Programming................................................................................................................................282.6.1 Activating and deactivating clearance control (CLC) ...................................................................282.6.2 Closed-loop control gain (CLC_GAIN).........................................................................................342.6.3 Limiting the control range (CLC_LIM) ..........................................................................................362.6.4 Direction-dependent traversing motion disable ...........................................................................372.6.5 Voltage offset, can be set on a block-specific basis (CLC_VOFF) ..............................................392.6.6 Voltage offset definable by synchronized action..........................................................................402.6.7 Selection of the active sensor characteristic (CLC_SEL) ............................................................412.7 Function-specific display data......................................................................................................422.7.1 Channel-specific GUD variables ..................................................................................................422.7.2 OPI variable .................................................................................................................................442.8 Function-specific alarm texts .......................................................................................................453 Boundary conditions ................................................................................................................................ 473.1 I/O modules..................................................................................................................................473.1.1 I/O modules (840D)......................................................................................................................473.1.2 I/O modules (840Di).....................................................................................................................483.1.3 External smoothing filters.............................................................................................................493.2 Function-specific boundary conditions.........................................................................................494 Examples................................................................................................................................................. 53