Siemens SINUMERIK 840Di Function Manual page 123

Supplementary Conditions
3.1 Axis monitoring functions
3.1
Settings
For correct operation of the monitoring, the following settings must be made or checked, in
addition to the machine data mentioned:
General
• MD31030 $MA_LEADSCREW_PITCH (Leadscrew pitch)
• MD31050 $MA_DRIVE_AX_RATIO_DENOM (Denominator load gearbox)
• MD31060 $MA_DRIVE_AX_RATIO_NUMERA (Numerator load gearbox)
• MD31070 $MA_DRIVE_ENC_RATIO_DENOM (Denominator measuring gearbox)
• MD31080 $MA_DRIVE_ENC_RATIO_NUMERA (Numerator measuring gearbox)
• MD32810 $MA_EQUIV_SPEEDCTRL_TIME
• Encoder resolution
Only drives with analog speed setpoint interface
• MD32260 $MA_RATED_VELO (Nominal motor speed)
• MD32250 $MA_RATED_OUTVAL (Nominal output voltage)
Axis Monitoring, Protection Zones (A3)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
(Equivalent time constant speed control loop for feedforward control)
The corresponding machine data are described in:
References:
/FB/ Description of Functions Basic Machine; Velocities, Set/Actual Value Systems,
Control (G2)
3
3-1