Siemens SINUMERIK 808D Function Manual

Function Manual
01/2017
123
● MD32530 $MA_FRICT_COMP_CONST_MIN (minimum compensation value)
Note
If satisfactory results cannot be obtained for very small path velocities, the computational resolution may have to be
increased:
•
MD10200 $MA_INT_INCR_ PER_MM (computational resolution for linear positions)
• MD10210 $MA_INT_INCR_PER_DEG (computational resolution for angular positions)
11.5.5
Compensation value for short traversing blocks
The compensation value determined for the quadrant error compensation can lead to overcompensation in short traversing
blocks. The overcompensation can be avoided by reducing the compensation value specifically for traversing blocks that are
traversed within one interpolation cycle. However, the size of the reduction is a value that must be determined empirically as
it depends to a large extent for every axis on the particular situation at the machine. A percentage of the compensation value
determined in the circularity test is set via the machine data:
MD32580 $MA_FRICT_COMP_INC_FACTOR (compensation value for short traversing blocks)
11.6
Data table
11.6.1
Machine data
Number
Identifier
Name
General
10200 INT_INCR_PER_MM Computational resolution for linear positions
10210
INT_INCR_PER_DEG
Computational resolution for angular positions
18342 MM_CEC_MAX_ POINTS[t] Maximum number of interpolation points of sag compen-
sation
Axis-specific
32450
BACKLASH[0]
Backlash
32490
FRICT_COMP_MODE
Type of friction compensation
32500
FRICT_COMP_ENABLE
Friction compensation active
32510
FRICT_COMP_ADAPT_ENABLE
Friction compensation adaptation active
32520
FRICT_COMP_CONST_MAX
Maximum friction compensation value
32530
FRICT_COMP_CONST_MIN
Minimum friction compensation value
32540
FRICT_COMP_TIME
Friction compensation time constant
32550
FRICT_COMP_ACCEL1
Adaptation acceleration value 1
32560
FRICT_COMP_ACCEL2
Adaptation acceleration value 2
32570
FRICT_COMP_ACCEL3
Adaptation acceleration value 3
32580 FRICT_COMP_INC_FACTOR Weighting factor for friction compensation value for short
traversing motion
32630
ACTIVATION_MODE
Feedforward control can be activated from the program
32700
ENC_COMP_ENABLE[0]
Interpolatory compensation active
32710
CEC_ENABLE
Enabling of sag compensation
32810
EQUIV_SPEEDCTRL_TIME[0]...[5]
Equivalent time constant of the speed control loop
36500 ENC_CHANGE_TOL Backlash compensation partial section
38000 MM_ENC_COMP_MAX_POINTS[0] Interpolation points for encoder/spindle compensation
(LEC ) (for display only)
11.6.2
Setting data
Number
Identifier
Name
General
41300
CEC_TABLE_ENABLE[t]
Enable evaluation of beam sag compensation table

Siemens SINUMERIK 808D Specifications

General

Brand	Siemens
Model	SINUMERIK 808D
Category	Control Unit
Language	English