Outline Of Stopping - Mitsubishi Electric QD70D4 User Manual

1 PRODUCT OUTLINE

1.2.2 Outline of stopping

Stop factor
Programmable controller CPU error
Software stroke limit upper/lower limit
QD70D
1
error *
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, 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 QD70D
(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 axis
Axis by axis
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.
Axis operation status
( Md. 4 ) after stop
All axes Error
Error
Error
Stopped
MELSEC-Q
Stop processing
OPR Positioning
control control operation
Deceleration stop
Deceleration stop
Deceleration stop *
Deceleration stop *
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