Sinumerik Alarm 300784 Axis %1 drive %2 zero load voltage invalid
Parameters:
%1 = NC axis number
%2 = Drive number
Definitions:
Error in the no-load voltage (MD 1135):
• MD 1135 <= 0 or• MD 1135 > MD 1132 or
• MD 1135 x MD 1142/MD 1400 + Uvor > 450V.
• Where
• Uvor = 0.181 x MD 1136 x MD 1142 x MD 1119
• Modify MD 1135: $MD_MOTOR_NOLOAD_VOLTAGE (motor no-load voltage)
• Modify MD 1132: $MD_MOTOR_NOMINAL_VOLTAGE (rated motor voltage)
• Modify MD 1400: $MD_MOTOR_RATED_SPEED (rated motor speed)
• Modify MD 1142: $MD_FIELD_WEAKENING_SPEED (threshold speed for field weakening)
• Modify MD 1136: $MD_MOTOR_NOLOAD_CURRENT (motor no-load current)
• Modify MD 1119: $MD_SERIES_INDUCTANCE (series reactor inductance) The alarm can be reprogrammed in the MD ALARM_REACTION_CHAN_NOREADY (channel not ready).
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. For standard motors: Reset the drive (delete the bootfile) and repeat the startup. For third-party motors: Check and, if necessary, correct the following machine data with reference to the data sheet:
• Modify MD 1132: $MD_MOTOR_NOMINAL_VOLTAGE (motor voltage)
• Modify MD 1135: $MD_MOTOR_NOLOAD_VOLTAGE (motor no-load voltage)
• Modify MD 1400: $MD_MOTOR_RATED_SPEED (rated motor speed)
• Modify MD 1142: $MD_FIELD_WEAKENING_SPEED (threshold speed for field weakening)
• Modify MD 1136: $MD_MOTOR_NOLOAD_CURRENT (motor no-load current).
• Call the SIEMENS AG, SIMODRIVE Hotline.
Program Continuation:
Clear alarm with the RESET key in all channels. Restart part program.
References
- Siemens Diagnostics Guide by Siemens