Editing Troubleshooting position control faults

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[[File:trackingerror_troubleshooting_1.png|thumb|400px|'''Example case A.''' (1) Tracking error originally occurs because motor output current gets saturated to maximum configured [[MMC]] parameter value of 2.0 Amps (first graph). (2) This leads to growing position tracking error (second graph) and fault gets triggered when error grows larger than 300 counts (set by parameter [[FPT]]). The third graph shows [[HV DC bus]] voltage which stays within valid range, so no reason for fault there.
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[[File:trackingerror_troubleshooting_1.png|thumb|400px|'''Example case A.''' (1) Tracking error originally occurs because motor output current gets saturated to maximum configured [[MMC]] parameter value of 2.0 Amps (first graph). (2) This leads to growing position tracking error (second graph) and fault gets triggered when error grows larger than 300 counts (set by parameter [[FPT]]). The third graph shows [[HV DC bus]] voltage which stays within valid range, so no reason for fault there.]]
The reason is also apparent from [[Fault location]] 140401.
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[[File:trackingerror_troubleshooting_2.png|thumb|400px|'''Example case B.''' Fault error occurs because [[HV DC bus]] voltage drops under high motor current load. This causes Undervoltage fault to activate, and possibly other faults (such as Tracking error) to follow.]]
]]
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[[File:trackingerror_troubleshooting_2.png|thumb|400px|'''Example case B.''' Fault error occurs because [[HV DC bus]] voltage drops under high motor current load. This causes Undervoltage fault to activate, and possibly other faults (such as Tracking error) to follow.
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The reason is also apparent from [[Fault location]] 140405.
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]]
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Position control fault can occur due to several reasons. This page gives tips how to troubleshoot the reason of the fault.
 
Position control fault can occur due to several reasons. This page gives tips how to troubleshoot the reason of the fault.
 
==Using fault status information==
 
==Using fault status information==
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If you can't reproduce the fault while Granity is connected, you may use the [[Downloading offline scope capture in Granity|offline capture feature]].
 
If you can't reproduce the fault while Granity is connected, you may use the [[Downloading offline scope capture in Granity|offline capture feature]].
  
{{tip|The method above is most effective with latest firmware version and Granity version that support offline capture and capture trigger delay. In older versions ''Capture on fault'' records data only ''after'' the fault, which may not provide very useful information, while the new version records also events ''before'' the fault.
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{{tip|The method above is most effective with latest firmware version and Granity version that support offline capture and capture trigger delay. In older versions ''Capture on fault'' records data only ''after'' the fault, which may not provide very useful information, while the new version records also events ''before'' the fault.}}
 
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If your drive firmware and Granity supports trigger delay, there will be ''[TBT] Capture before trigger event'' spinbox in the Testing page.}}
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[[Category:Troubleshooting]]
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[[Category:Granity troubleshooting]]
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[[Category:Granity user guide]]
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