Omron 3G3MX2 User Manual page 280

5-12 Simple Position Control Function
P075 = 00
*4. This setting is not required if control method is set to Sensorless vector control (A044/A244 = 03).
*5. If P004 is 00, counting will not be performed if the motor runs idle when neither FW nor RV is input.
(This is because FW/RV specify the motor rotation direction.) The value of d030 is cleared when PCLR
(position clear signal), SPD (speed/position switch signal), ORG (zero return start signal) or RS (RS
terminal input) turns ON or the power supply is turned ON. Calculations are based on a x1 number of
pulses and are not dependent on whether a single-phase or dual-phase encoder input is used.
00
(Frequency setting
(including PID))
01
Encoder feedback
01
5
Encoder feedback
RUN command
Output
frequency (Hz)
Speed
reference
POK output signal
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. Adjust the strength of the DC injection brake to minimize rotational
fluctuations when the DC injection brake is applied and in a range that will not cause the
electronic thermal to trip. If the creep speed setting is small, displacement will tend to be
smaller.
5-163
4000
2000
Present position
P075 = 01 (shortest control)
0
8000 = P060
P003 P004
00
(1-phase pulse input)
If the position command is
small, deceleration and
positioning is performed before
the speed reference is reached.
Position command: 6000
6000
P012
00
(Simple position control
disabled)
00
-
(Simple position control
disabled)
02
-
(Simple position control
enabled)
ON
SYSDRIVE MX2 Series USER'S MANUAL (3G3MX2-A@@@@)
A044 Enabled function
Pulse train frequency
-
input
V/f control with FB
00 to 02
Simple position
-
control
Creep Speed Setting P015
DC injection brake (DB)
Position
ON