4-17
4-4 Absolute Position/High-resolution Absolute Position Control Modes
4
Functions
Absolute Position Control Operation
In the absolute position control mode, the Inverter moves to the target position according to the fol-
lowing parameter settings, and is then set in the position servo lock status.
• Position command
• Speed command (frequency reference)
• Acceleration/Deceleration time
(The servo lock status is retained until the RUN command is turned OFF.)
The frequency reference and acceleration/deceleration command for absolute position control con-
form to the parameters selected when the RUN command is ON.
If the position command is set to a low value, the Inverter may start deceleration and perform posi-
tioning before the speed command value is reached.
In the absolute position control mode, the direction of RUN command (FW or RV) does not refer to
the rotating direction. The FW or RV signal starts or stops the Inverter. The Inverter runs forward
when (Target position
−
Current position) is a positive value, or runs in reverse when it is a negative
value.
If you do not perform zero return operation, the position at power-on is regarded as the origin (po-
sition = 0).
When position command is set to zero, position ready is set when the RUN command is turned ON.
In reset selection C102, select “03” (trip reset only).
* If reset selection C102 is not set to “03”, turning ON the Inverter’s reset terminal (or RESET key)
clears the current position counter. To operate the Inverter by using the current position counter
value after resetting a trip by turning on the reset terminal (or RESET key), be sure to set reset
selection C102 to “03”.
If PCLR is allocated, turning on the PCLR terminal clears the current position counter.
(The internal position deviation counter will be simultaneously cleared.)
The absolute position control mode disables the ATR terminal. (Torque control is disabled.)
The absolute position control mode disables the STAT terminal. (Pulse train position control is dis-
abled.)
The absolute position control mode disables the orientation function.
(However, the ORT terminal is used for teaching, as described later.)
ON
Output
frequency (Hz)
Position
Speed
command
RUN command
ON
Position ready range setting (P017)
Position ready delay time setting
(P018)
POK signal
When the position command
level is low, the motor
decelerates and its position is
determined before the output
frequency reaches the speed
command level.
Summary of Contents for 3G3AX-PG
Page 1: ...Cat No I564 E1 01 USER S MANUAL 3G3AX PG Encorder Feedback Board ...
Page 2: ......
Page 14: ...12 Contents ...
Page 15: ...Chapter 1 Overview 1 1 Overview 1 1 ...
Page 27: ...Chapter 3 Operation 3 1 Related Parameters 3 1 3 2 Precautions for Operation 3 8 ...
Page 65: ...Chapter 6 Specifications 6 1 Product Specifications 6 1 ...
Page 67: ......