How do I fix Siemens SINUMERIK alarm 300509?

1. Please inform the authorized personnel/service department. 2. Check number of encoder lines in MD 1005: $MD_ENC_RESOL_MOTOR (encoder resolution for motor measuring system). 3. Check encoder power supply (short circuit or ground fault). 4. Replace encoder, encoder cable or controller module. 5. Modify MD 1400: $MD_MOTOR_RATED_SPEED (rated motor speed), - Modify MD 1146: $MD_MOTOR_MAX_ALLOWED_SPEED (maximum motor speed). 6. 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). 7. Switch control OFF - ON

Siemens SINUMERIK codes

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Siemens SINUMERIK Controller

Servo/Axis · Intermediate · 30-120 minutes

Alarm 300509

Siemens 300509 - Axis drive converter frequency exceeded

The motor has exceeded the maximum converter frequency fmax (see below). Converter frequency = speed * number of motor pole pairs Maximum converter frequency: - FSD: fmax = 1.12 * minimum(1.2*MD 1400, MD 1147) * MD1112 / 60 - MSD: fmax = 1.12 * minimum(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) Control reaction: NC not ready. The NC switches to follow-up mode. Channel not ready. NC Start disable in this channel. Interface signals are set. Alarm display. NC Stop on alarm. Channel not ready.

Siemens SINUMERIKServo/AxisIntermediate30-120 minutes

300509

Siemens 300509 - Axis drive converter frequency exceeded

Axis drive converter frequency exceeded

Safety

Drive/power/encoder circuit: hazardous voltages may remain in the DC link after power-off. Lock out / tag out, wait for discharge per the drive documentation, and use qualified personnel only.

Common Causes

The motor has exceeded the maximum converter frequency fmax (see below).
Converter frequency = speed * number of motor pole pairs Maximum converter frequency: - FSD: fmax = 1.12 * minimum(1.2*MD 1400, MD 1147) * MD1112 / 60 - MSD: fmax = 1.12 * minimum(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)

Troubleshooting Steps

1Please inform the authorized personnel/service department.
2Check number of encoder lines in MD 1005: $MD_ENC_RESOL_MOTOR (encoder resolution for motor measuring system).
3Check encoder power supply (short circuit or ground fault).
4Replace encoder, encoder cable or controller module.
5Modify MD 1400: $MD_MOTOR_RATED_SPEED (rated motor speed), - Modify MD 1146: $MD_MOTOR_MAX_ALLOWED_SPEED (maximum motor speed).
6Modify 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).
7Switch control OFF - ON

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