5-163
5-12 Simple Position Control Function
SYSDRIVE MX2 Series USER'S MANUAL (3G3MX2-A@@@@)
5
Functions
*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.
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.
0
8000 = P060
2000
4000
6000
P075 = 00
Present position
Position command: 6000
P075 = 01 (shortest control)
P003 P004 P012 A044 Enabled function
00
(Frequency setting
(including PID))
00
(1-phase pulse input)
00
(Simple position control
disabled)
-
Pulse train frequency
input
01
Encoder feedback
-
00
(Simple position control
disabled)
00 to 02
V/f control with FB
01
Encoder feedback
-
02
(Simple position control
enabled)
-
Simple position
control
DC injection brake (DB)
ON
ON
RUN command
Output
frequency (Hz)
Speed
reference
POK output signal
If the position command is
small, deceleration and
positioning is performed before
the speed reference is reached.
Creep Speed Setting P015
Position
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