Siemens SINUMERIK 840Di Diagnostic Manual page 707

11/2006
300507 Axis %1 drive %2 synchronization error of rotor position
Parameters: %1 = NC axis number
%2 = Drive number
Definitions: There is a difference of more than 45° electrical between the present rotor position (C/D track) and the
new rotor position as determined by fine synchronization. Faults may have occurred in the encoder or
zero marker signals.
The alarm can be reprogrammed in the MD ALARM_REACTION_CHAN_NOREADY (channel not
ready).
Reaction: Mode group 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.
Remedy: - Use original Siemens encoder cables (they have a higher degree of screening).
- Check the encoder, encoder cables and screen connection for damage.
- Check the shield connection on the front plate of the controller module (top screw).
- Replace the control module.
- Check MD 1016 $MD_COMMUTATION_ANGLE_OFFSET (commutation angle offset).
Program Switch control OFF - ON.
Continuation:
300508 Axis %1 drive %2 zero mark monitoring of motor measuring system
Parameters: %1 = NC axis number
%2 = Drive number
Definitions: An error was detected in the number of encoder lines counted to modulo (16/10) on crossing of the
zero marker. Increments were lost or added.
The alarm can be reprogrammed in the MD ALARM_REACTION_CHAN_NOREADY (channel not
ready).
Reaction: Mode group 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.
Remedy: Please inform the authorized personnel/service department.
- Use original Siemens encoder cables (they have a higher degree of screening).
- Check the encoder, encoder cable and shield connection for loose contact or cable breakage.
- Check the shield connection on the front plate of the controller module (top screw).
- For a gearwheel encoder, check the distance between the gearwheel and the sensor.
- Replace the encoder, encoder cable or control module.
- Check the metallized intermediate circuit cover.
- If a BERO proximity switch is used, the zero marker of the encoder is still being monitored and not
the BERO signal.
Program Switch control OFF - ON.
Continuation:
© Siemens AG, 2006. All rights reserved
SINUMERIK, SIMODRIVE Diagnostics Manual (DA), 11/2006 Edition
Overview of Alarms
SIMODRIVE alarms
2-707