Speed-Position Switching Control (Abs Mode) - Mitsubishi MELSEC QD75P User Manual

9 MAJOR POSITIONING CONTROL

9.2.17 Speed-position switching control (ABS mode)

In case of "speed-position switching control (ABS mode)" ("
Forward run: speed/position, Reverse run: speed/position), the pulses of the speed set
in "
data. When the "speed-position switching signal" is input, position control to the
address set in "
"Speed-position switching control (ABS mode)" is available in two different types:
"forward run: speed/position" which starts the axis in the forward run direction and
"reverse run: speed/position" which starts the axis in the reverse run direction.
"Speed-position switching control (ABS mode)" is valid only when "
is "2: degree".
Speed-position
function selection
INC mode
ABS mode
Use the detailed parameter 1 "

"speed-position switching control (ABS mode)".

Da.8 Command speed" are kept output in the axial direction set to the positioning
Da.6 Positioning address/movement amount" is exercised.
Pr.1 Unit setting
: Setting allowed,
: Setting disallowed (If setting is made, an error (error code: 935) will occur when the PLC
READY signal (Y0) turns ON.)
Setting
Setting item
value
Speed-
position
Pr.150 2
function
selection
If the set value is other than 0 and 2, it is regarded as 0 and operation is performed in the INC
mode.
For details of the setting, refer to Section 5.2 "List of parameters".
Switching over from speed control to position control
(1) The control is switched over from speed control to position control by the
external signal "speed-position switching signal".
(2) Besides setting the positioning data, the "
enable flag" must also be turned ON to switch over from speed control to
position control. (If the "
ON after the speed-position switching signal turns ON, the control will continue
as speed control without switching over to position control. Only position
control will be carried out when the "
flag" and speed-position switching signal are ON at the operation start.)
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mm inch degree
Pr.150 Speed-position function selection" to choose
Setting details
Speed-position switching control
(ABS mode)
Cd.24
Cd.24
Speed-position switching enable flag" turns
Cd.24
Speed-position switching enable
9 - 90
MELSEC-Q
Da.2 Control system" =
Pr.1 Unit setting"
pulse
Buffer memory address
Axis 1 Axis 2 Axis 3 Axis 4
34 184 334 484
Speed-position switching