Mitsubishi Electric FR-A800, Instruction Manual

Page: 696 / 1042

(A) Application parameters Parameters
5 - 516
Description of orientation operation (Vector control)
●
Setting the rotation direction (Pr. 393 "Orientation selection")
Orientation from the current rotation direction (Pr. 393 = "0 (initial value)", 10) (Vector control)
●
When the orientation command (X22) is input, the motor speed will decelerate from the running
speed to Pr. 351 "Orientation speed." At the same time, the orientation stop position command
will be read in. (The stop position command is determined by the setting of Pr. 350 "Stop position
command selection" and Pr. 360 "16-bit data selection". Refer to the chart below.)
●
When the orientation switchover speed is reached, the encoder Z phase pulse will be confirmed,
and the control will change from speed control to position control (Pr. 362 "Orientation position
loop gain").
●
The distance to the orientation stop position is calculated at switching of the control, and the
motor decelerates to a stop with a set deceleration pattern (Pr. 399 "Orientation deceleration
ratio") and enters the orientation (servo lock) state.
●
Once in the Pr. 357 "Orientation in-position zone", the orientation complete (ORA) signal is output.
●
The home position can be moved using Pr. 361 "Position shift".
Pr. 393 setting Rotation direction Remarks
0
(initial value)
Pre-orientation
Orientation is executed from the current rotation
direction.
Motor end
orientation
1
Forward rotation
orientation
Orientation is executed from the forward rotation
direction.
(If the motor is running in reverse, orientation is
executed from the forward rotation direction after
deceleration.)
2
Reverse rotation
orientation
Orientation is executed from the reverse rotation
direction.
(If the motor is running forward, orientation is
executed from the reverse rotation direction after
deceleration.)
10 Pre-orientation
Orientation is executed from the current rotation
direction.
Machine end
orientation
11
Forward rotation
orientation
Orientation is executed from the forward rotation
direction.
(If the motor is running in reverse, orientation is
executed from the forward rotation direction after
deceleration.)
12
Reverse rotation
orientation
Orientation is executed from the reverse rotation
direction.
(If the motor is running forward, orientation is
executed from the reverse rotation direction after
deceleration.)
Tab. 5-216: Setting of parameter 393
Fig. 5-249:
Orientation from the current rotation direction
I001583E, I001584E
Speed
(forward
rotation)
ON
ON OFF
OFF
Speed
(reverse
rotation)
X22
ORA
ON
ON
OFF
OFF X22
ORA
Time
Time