Siemens SINUMERIK 840D sl Function Manual page 129

Supplementary conditions
3.1 Axis monitoring functions
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 (equivalent time constant speed control loop
• Encoder resolution
Only drives with analog speed setpoint interface
• MD32260 $MA_RATED_VELO (Nominal motor speed)
• MD32250 $MA_RATED_OUTVAL (Nominal output voltage)
Basic logic functions: Axis monitoring, protection zones (A3)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0
for feedforward control)
The corresponding machine data is described in:
References:
/FB1/ Function Manual, Basic Functions; Velocities, Setpoint/Actual Value Systems,
Closed-Loop Control (G2)
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