Siemens SINUMERIK 804D sl Commissioning Manual page 144

NCK start-up
10.5 Parameterize axis data
Speed setpoint monitoring
The speed setpoint monitoring prevents that the max. admissible motor speed is exceeded.
It must be set such that the max. velocity (rapid traverse) can be reached and, in addition, a
certain control margin remains.
• MD36210 CTRLOUT_LIMIT[n] (maximum speed setpoint in %)
Figure 10-16 Speed setpoint limitation
The following machine data is used to define how long the speed setpoint may remain within
the limits before the speed setpoint monitoring responds.
• MD36220 CTRLOUT_LIMIT_TIME[n] (delay time for speed setpoint monitoring)
Error response
• Alarm: "25060 Speed setpoint limiting"
and stopping the machine axis using a speed setpoint ramp whose characteristic is set in
• MD36610 AX_EMERGENCY_STOP_TIME (Time for braking ramp when an error occurs)
Cause of errors/error handling
• A measuring circuit error or drive error is present.
• Setpoints are too high (accelerations, velocities, reducing factors)
• Obstacle in the machining space (e.g. tool hits working table) => remove obstacle.
The speed setpoint consists of the speed setpoint of the position controller and the
feedforward control parameter (if feedforward control is active).
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CNC Part 1 (NCK, PLC, drive)
Commissioning Manual, 11/2006, 6FC5397-2AP10-2BA0