Sinumerik Alarm 300726 Axis %1 drive %2 voltage constant is zero
%1 = NC axis number
%2 = Drive number
The value in drive MD 1114: $MD_EMF_VOLTAGE is set to zero.
– 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. For standard motors: Reset the drive (delete the bootfile) and repeat the startup. For third-party motors: Check and, if necessary, refer to the motor data sheet to correct MD 1114: $MD_MOTOR_NOLOAD_CURRENT (motor no-load current).
Switch control OFF – ON.
- Siemens Diagnostics Guide by Siemens