Outline Of Stopping - Mitsubishi Electric MELSECQ Series User Manual

1 PRODUCT OUTLINE

1.2.2 Outline of stopping

Programmable controller CPU error
Software stroke limit
upper/lower limit error
QD70 error
Other error
"Axis stop signal" from programmable
controller CPU turned ON
1: By making parameter setting, you can set the software stroke limit valid/invalid. When the stroke limit is set invalid, a
deceleration stop is not made. (Refer to Section 4.2.)
2: If an illegal positioning data setting value caused an error during position control (operation pattern: continuous path
control), an immediate stop is made at the positioning data preceding that illegal setting value. (Refer to Section 9.1.2.)
3: For position control (operation pattern: continuous path control), you can make parameter setting to select the
stopping method (position match stop or deceleration stop). (Refer to Section 4.2.)
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The possible causes of a control stop are as follows.
(1) Control ended normally
(2) An error occurred in the programmable controller CPU
(3) An error occurred in the QD70
(4) The axis stop signal from the programmable controller CPU turned ON
Stop processings performed in the above cases are outlined in the following table.
(Except the case (1) where control stopped normally)
Stopped
Stop factor
Axis by axis
1
Axis by axis
Axis by axis
Stop after multiple axes simultaneous start under positioning control
The axes started will not stop simultaneously. The stop command (axis stop signal
ON) must be given to each axis.
search engine
Axis operation
status ( Md. 4 )
axis
after stop
All axes Error
Error
Error
Stopped
Stop processing
Positioning
OPR control
control
Deceleration stop
Deceleration stop
Deceleration stop
Deceleration stop
MELSEC-Q
JOG operation
2
3
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