Sinumerik Alarm 300720 Axis %1 drive %2 maximum motor speed invalid
%1 = NC axis number
%2 = Drive number
Because of the high maximum motor speed in the drive MD 1401: $MD_MOTOR_MAX_SPEED and the speed controller cycle in MD 1001: $MD_SPEEDCTRL_CYCLE_TIME sufficiently high speeds can occur to cause a format overflow. Example: A motor speed of 480,000 rpm can still be processed without error at a speed controller cycle time of 125 µs.
– NC not ready.
– Channel not ready.
– NC Stop on alarm.
– NC Start disable in this channel.
– The NC switches to follow-up mode.
– Alarm display.
– Interface signals are set.
Please inform the authorized personnel/service department. Reduce the maximum motor speed MD 1401: $MD_MOTOR_MAX_SPEED (speed for the maximum useful motor speed) or set a smaller speed controller cycle in MD 1001: $MD_SPEEDCTRL_CYCLE_TIME (speed controller cycle).
Switch control OFF – ON.
- Siemens Diagnostics Guide by Siemens