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14.2.5 When the positioning speed is different from the specified
speed
14.2.6 When operation stops abnormally during positioning
Check item Action
Are the positioning data set properly? Set proper positioning data.
Is the set positioning speed value greater than " Speed
limit value"?
Set a positioning speed value that is smaller than " Speed limit
value".
Is the accumulated pulse setting proper?
Calculate the maximum accumulated pulse amount, and review the
accumulated pulse setting. ( Page 102, Section 6.2.2)
Is the zero/gain adjustment proper?
Perform zero/gain adjustment again. ( Page 59, Section 4.5)
Is the multiplication setting proper?
Configure the multiplication setting properly. ( Page 104, Section
6.2.3)
Is the servo amplifier set properly?
Refer to the manual for the servo amplifier, and set the servo amplifier
properly.
Is a speed change executed? Review the sequence program to see if the speed change is necessary.
Is proper wave output displayed when the QD73A1's speed
command terminal is connected to an oscilloscope?
If proper wave output is not displayed, please consult your local Mitsubishi
representative.
Is proper wave output displayed when the drive unit's
encoder output terminal is connected to an oscilloscope?
Check item Action
Is there an error on the servo amplifier? Refer to the manual for the servo amplifier, and check the error detail.
Is Stop signal (Y27) on? Review the sequence program to see if Stop signal (Y27) needs to be turned on.
Is Stop signal (STOP) on? Check if Stop signal (STOP) is wired properly.
Is Excessive error signal (X17) on?
The accumulated pulse amount is outside the setting range.
Check if the accumulated pulse setting is proper. ( Page 102, Section 6.2.2)
Is there noise effect?
• Place signal lines away from power cables.
• Use shielded twisted pair cables for signal lines.
• Ground cables without fail.
• Place each device in the system away from noise source.
Pr.5
Pr.5