Siemens SINUMERIK 840D Diagnostics Manual page 578

1 Alarms
300734
Parameters:
Definitions:
Reactions:
Remedy:
Program Continuation:
300735
Parameters:
Definitions:
Reactions:
Remedy:
Program Continuation:
300736
Parameters:
Definitions:
Reactions:
1-578
Axis %1 drive %2 zero load current less than or equal to zero
%1 = NC axis number
%2 = Drive number
The value in MD 1136: $MD_MOTOR_NOLOAD_CURRENT (motor no-load current) is
less than or equal to zero.
- 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.
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 1136: $MD_MOTOR_NOLOAD_CURRENT (motor no-load current).
Switch control OFF - ON.
Axis %1 drive %2 field weakening speed invalid
%1 = NC axis number
%2 = Drive number
The value in MD 1142: $MD_FIELD_WEAKENING_SPEED (threshold speed for field
weakening) is less than or equal to zero.
- 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.
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 1142: $MD_FIELD_WEAKENING_SPEED (threshold speed for field weakening).
Switch control OFF - ON.
Axis %1 drive %2 Lh characteristic invalid
%1 = NC axis number
%2 = Drive number
The value in MD 1143: $MD_LH_CURVE_UPPER_SPEED (LH curve upper speed) is
less than or equal to the value in MD 1142: $MD_FIELD_WEAKENING_SPEED (thresh-
old speed for field weakening) or the value in MD 1144: $MD_LH_CURVE_GAIN (LH
curve gain) is less than 100.
- 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.
 Siemens AG, 2004. All rights reserved
SINUMERIK 840D/840Di/810D Diagnostics Guide (DA), 10.04 Edition
10.04