6-7
Position Control
On the 3G3M1 Series, the PG feedback signal can be used to perform position control.
The pulses of the feedback signal are counted internally by the inverter, and operation is performed so
that moving amount is to the specified position data.
In vector control with speed sensor or V/f control with speed sensor, the speed and position are calcu-
lated based on the feedback signal. In vector control without speed sensor or V/f control without speed
sensor, only position is calculated based on the feedback signal. The inverter is also mounted with an
orientation function as an applied function for position control.
The position control function can be used in 1st and 2nd control. However, note that only one set of
position control related parameters is provided for the position control function.
6-7-1
Basic Operation
Positioning control is enabled by turning digital input “SPD” OFF during a stop. After that, operation is
started by input of the RUN command, acceleration is performed up to the set frequency, and a decel-
eration and stop are performed so that movement is made up to the position data. When movement
stops, the servo lock is activated. Eight types of positioning data can be selected by combinations of
“CP1,” “CP2” and “CP3.” Movement is resumed by a change made to the position data (target position
changed) by “POS-SET” turning ON. When the target position is reached and the servo lock is activat-
ed, digital output “POK” turns ON. If “P-SEL” is turned ON when the mechanical brake is applied dur-
ing a servo lock, the electric angle is fixed so that the mechanical brake can be input.
6 Vector Control and Applied Functions
6-36
M1 Series Standard Type User's Manual (I669)
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