Omron SYSDRIVE MX2 SERIES User Manual page 276

5-12 Simple Position Control Function
*3. When a rotary coordinate system such as a turntable is used, setting b075 = 01 allows for positioning
in the rotation direction corresponding to the shorter moving distance. In this case, set the position per
rotation in the rotary coordinate system, in Multi-step Position Command 0 (P060). (This must be a
positive value.) Take note that this function can be used only when Feedback Pulse Train Input (P004)
is "00" or "01."
P075 = 00
*4. This setting is not required if control method is set to Sensorless vector control (A044/A244 = 03).
*5. If FW/RV is not input and the motor spins when P004 is set to 00, counting does not start. (This is
because FW/RV specifies the motor rotation direction.) The value of d030 is cleared when PCLR,
SPD, ORG or RS is turned ON or the power is turned on.
5
Output
frequency (Hz)
In simple position control, DC injection braking (DB) is applied after moving to the target
position according to the following:
(1) Position command
(2) Speed reference (frequency reference)
(3) Acceleration time, deceleration time
DC injection braking must be set. (DC injection braking (DB) will remain effective until the RUN
command is turned OFF.)
In absolute position control, the frequency reference and acceleration/deceleration reference
conform to the currently selected parameters.
The exact target position may not be achieved depending on the DC injection braking force or
creep speed setting.
If the position command is set to a low value, the Inverter may conduct deceleration and
perform positioning before the speed command value is reached. If the position command is
"0," DC injection braking (DB) is applied immediately when the RUN command is turned ON.
The position at power-on is recognized as the zero (position = 0). (When the power is turned
off, the current value is cleared.)
5-161
P004 Description
Dual-phase pulse train with 90°
01
phase difference 1
Dual-phase pulse train with 90°
02
phase difference 2
4000
2000
Current position
P075 = 01 (shortest control)
0
8000 = P060
RUN command
Speed
reference
POK output signal
The current position is maintained.
According to the RUN command signal
(forward FW, reverse RV)
Position command: 6000
6000
ON
If the position command is
small, deceleration and
positioning is performed before
the speed reference is reached.
SYSDRIVE MX2 Series USER'S MANUAL (3G3MX2-Axxxx)
Description
Creep Speed Setting P015
Position
ON