Sinumerik Alarm 300509 Axis %1 drive %2 current frequency exceeded
Parameters:
%1 = NC axis number
%2 = Drive number
Definitions:
The motor has exceeded the maximum current frequency fmax (see below). Current frequency = speed
* number of motor pole pairs Maximum current frequency: • FDD: fmax = 1.12
* ninimum(1.2*MD 1400, MD 1147)
* MD1112 / 60 • MSD: fmax = 1.12
* ninimum(MD 1146, MD 1147)
* number of pole pairs / 60 • Number of pole pairs = integer component of rated motor frequency (MD 1134)
* 60 / rated motor speed (MD 1400)
Reactions:
– NC not ready.
– Channel 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.
Remedy:
Please inform the authorized personnel/service department.
• Check number of encoder lines in MD 1005: $MD_ENC_RESOL_MOTOR (encoder resolution for motor measuring system).
• Check encoder power supply (short circuit or ground fault).
• Replace encoder, encoder cable or controller module.
• Modify MD 1400: $MD_MOTOR_RATED_SPEED (rated motor speed),
• Modify MD 1146: $MD_MOTOR_MAX_ALLOWED_SPEED (maximum motor speed).
• Modify MD 1147: $MD_SPEED_LIMIT (speed limit),
• Modify MD 1112: $MD_NUM_POLE_PAIRS (number of motor pole pairs) (FDD),
• Modify MD 1134: $MD_MOTOR_NOMINAL_FREQUENCY (rated motor frequency) (MSD).
Program Continuation:
Switch control OFF – ON.
References
- Siemens Diagnostics Guide by Siemens