NC Commissioning with HMI Advanced
11.5 Axes and spindles
Manual
428
Commissioning Manual, 05/2008, 6FC5397–4CP10–4BA0
Actual velocity monitoring
Monitoring due to the actual velocity of the machine axis determined based on the encoder
values
●
MD36020 $MA_AX_VELO_LIMIT (velocity-monitoring threshold)
Error reaction:
●
Alarm "25030 Alarm limit of actual velocity"
and stopping the machine axis using a speed setpoint ramp whose characteristic curve is set
in the following machine data:
●
MD36610 $MA_AX_EMERGENCY_STOP_TIME (braking ramp time when errors occur)
Causes of error/error handling:
●
Check speed setpoint cable
●
Check actual values
●
Check position control direction (control sense)
●
Threshold value for velocity monitoring is possibly too low.
Contour monitoring
Monitoring of the difference between following error measured and following error calculated
from the position setpoint.
●
MD36400 $MA_CONTOUR_TOL (contour monitoring tolerance range)
Error reaction:
●
Alarm "25050 Contour monitoring"
and stopping the machine axis using a speed setpoint ramp whose characteristic curve is set
in the following machine data:
●
MD36610 $MA_AX_EMERGENCY_STOP_TIME (braking ramp time when errors occur)
Causes of error/error handling:
Contour errors are caused by signal distortions in the position control loop.
Execute the following steps for error removal:
●
Increase the tolerance band
●
Check the Kv factor
The real servo gain must correspond to the desired servo gain set by MD32200
$MA_POSCTRL_GAIN[n] (Kv factor).
HMI-Advanced
Operating area: DIAGNOSIS > Service displays > Service axis.
●
Check optimization of the speed controller
●
Check smooth running of the axes
●
Check machine data for traversing motions
(Feedrate override, acceleration, max. velocities, ... )
