Siemens SINUMERIK 840Di Function Manual page 431

The following existing machine data can be coded using parameter sets and have already
been tried and tested during the startup of the NC:
Denominator load gearbox
Numerator load gearbox
Equivalent time constant current control loop
Equivalent time constant speed control loop
Time constant for dynamic response
adaptation
Threshold value for velocity monitoring
Advantages
• The indirect switchover of a single function: (e.g. MD32452 not 1)
• The indirect switchover of several functions: (e.g. MD36012 not 1)
In this way, configuration errors are avoided and input work reduced.
Velocities, Setpoint/Actual-Value Systems, Closed-Loop Control (G2)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
The parameter set-dependent function is only relevant if required.
The common weighting factor forces the ratios of all parameter set-dependent functions
within various machine data to remain constant. To switch over several functions, one
single machine data can be sufficient.
MD31050 $MA_DRIVE_AX_RATIO_DENOM
MD31060 $MA_DRIVE_AX_RATIO_NUMERO
MD32800 $MA_EQUIV_CURRCTRL_TIME
MD32810 $MA_EQUIV_SPEEDCTRL_TIME
MD32910 $MA_DYN_MATCH_TIME
MD36200 $MA_AX_VELO_LIMIT
Detailed Description
2.4 Closed-loop control
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