When The Positioning Speed Is Different From The Specified Speed; When Operation Stops Abnormally During Positioning - Mitsubishi Electric MELSEC Q Series User Manual

14.2.5
When the positioning speed is different from the specified
speed
Check item
Are the positioning data set properly?
Is the set positioning speed value greater than "
limit value"?
Is the accumulated pulse setting proper?
Is the zero/gain adjustment proper?
Is the multiplication setting proper?
Is the servo amplifier set properly?
Is a speed change executed?
Is proper wave output displayed when the QD73A1's speed
command terminal is connected to an oscilloscope?
Is proper wave output displayed when the drive unit's
encoder output terminal is connected to an oscilloscope?
14.2.6

When operation stops abnormally during positioning

Check item
Is there an error on the servo amplifier?
Is Stop signal (Y27) on?
Is Stop signal (STOP) on?
Is Excessive error signal (X17) on?
Is there noise effect?
248
Set proper positioning data.
Speed Set a positioning speed value that is smaller than "
Pr.5
value".
Calculate the maximum accumulated pulse amount, and review the
accumulated pulse setting. (
Perform zero/gain adjustment again. (
Configure the multiplication setting properly. (
6.2.3)
Refer to the manual for the servo amplifier, and set the servo amplifier
properly.
Review the sequence program to see if the speed change is necessary.
If proper wave output is not displayed, please consult your local Mitsubishi
representative.
Refer to the manual for the servo amplifier, and check the error detail.
Review the sequence program to see if Stop signal (Y27) needs to be turned on.
Check if Stop signal (STOP) is wired properly.
The accumulated pulse amount is outside the setting range.
Check if the accumulated pulse setting is proper. (
• 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.
Action
Pr.5
Page 102, Section 6.2.2)
Page 59, Section 4.5)
Page 104, Section
Action
Page 102, Section 6.2.2)
Speed limit