Mitsubishi Electric MELSEC iQ-R RD75P4, User Manual

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12 DATA USED FOR POSITIONING CONTROL
12.3 Basic Setting
[Pr.36] Sudden stop deceleration time
Set the time for the speed to decrease from [Pr.8] Speed limit value (from [Pr.31] JOG speed limit value during a JOG
operation control) to 0 at a sudden stop in units of ms. Set this parameter to stop (sudden stop) operations in a shorter time
than the deceleration time for positioning when a stop cause occurs. Stop causes are classified into stop cause 1 to 3. The
stop cause for a sudden stop can be selected with the setting of [Pr.37] Stop group 1 sudden stop selection setting to [Pr.39]
Stop group 3 sudden stop selection.
The following figure shows the relation with other parameters.
■
Buffer memory address
The following table shows the buffer memory address of this area.
■ Setting range
The setting range is 1 to 8388608.
■
Default value
The default value is 1000 for all the axes.
Buffer memory name Axis 1 Axis 2 Axis 3 Axis 4
[Pr.36] Sudden stop deceleration time 54 204 354 504
55 205 355 505
Pr.8
Da.8
Pr.36
Pr.9
Pr.25
Pr.26
Pr.27
Pr.10
Pr.28
Pr.29
Pr.30
V
t
Speed limit
value
Command
speed
Actual
acceleration
time
(1) Positioning start (2) Sudden stop cause occurrence (3) Positioning stop
Actual
deceleration
time
Acceleration time Deceleration time
Actual sudden stop
deceleration time
Sudden stop
deceleration time
Acceleration time 0
Acceleration time 1
Acceleration time 2
Acceleration time 3
Deceleration time 0
Deceleration time 1
Deceleration time 2
Deceleration time 3
When positioning is started,
the acceleration starts following
the acceleration time.
⋅ ⋅
When a sudden stop cause occurred,
the deceleration starts following
the sudden stop deceleration time.
⋅
When a sudden stop cause
does not occur,
the deceleration starts toward
the stop position following
the deceleration time.