Mitsubishi Electric FR-A800 Series Instruction Manual page 309

To set 819200 as the first feed length, separate the number into the upper and lower 4 digits as follows:
Pr.466 (upper digits) = 81 (decimal), Pr.465 (lower digits) = 9200 (decimal)
• The position feed length of PM sensorless vector control is fixed at 4096 for each motor rotation.
 Acceleration/deceleration time setting
• Set the acceleration/deceleration time for parameters corresponding to each point table.
• The frequency which is the basis of acceleration/deceleration time is Pr.20 Acceleration/deceleration reference
frequency. However, 1 Hz/s is the minimum acceleration/deceleration rate (acceleration/deceleration frequency divided
by acceleration/deceleration time). If the acceleration/deceleration rate is smaller than 1, the motor runs at 1 Hz/s or in the
deceleration time.
• The maximum acceleration/deceleration time is limited at 360 seconds.
• During position control, acceleration/deceleration pattern is always the liner acceleration/deceleration, and the Pr.29
Acceleration/deceleration pattern selection setting is ignored.
 Setting the waiting (dwell) time
• Set the waiting (dwell) time which is the interval from the completion of the position command of a selected point table to
the start of the position command of the next point table.
• Set the dwell time from 0 to 20000 ms for parameters corresponding to each point table.
 Auxiliary function setting
• Set the handling and operation methods of the position data in each point table.
• Set the auxiliary function for parameters corresponding to each point table.
Auxiliary function
parameter setting
0
1
2
10
11
12
100
101
102
110
111
112
• For the sign, select the sign of position data.
• For the command method, select the absolute position command or incremental position command. For the absolute
position command, specify the distance from the home position. For the incremental position command, specify the
distance from the current position command.
• Position commands cannot be received until the completion of the home position return.
• For the operation method, select "individual", "continuous", or "loop operation using the point table selected at the start".
When continuous operation is selected, next point table is executed after a command has been executed.
Set "individual" as the operation method for the point table which is the last of the continuous operation.
When "loop operation using the point table selected at the start" is selected, the positioning operation is the loop. To stop
the operation, turn OFF the STF (STR) signal, or turn ON the X87 (sudden stop) input signal.
• Individual operation is only executed in the selected point table. The dwell time setting is disabled in individual operation.
• Continuous operation setting is not available for the point table 15 ("0, 2, 10, 12, 100, 102, 110 or 112" can be set to
Pr.1281).
308
5. PARAMETERS
5.5 Position control under vector control and PM sensorless vector control
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Command method
Sign (100s digit)
(tens place)
Absolute position
command (0)
Plus (0)
Incremental position
command (1)
Absolute position
command (0)
Minus (1)
Incremental position
command (1)
search engine
Operation method
(ones place)
Individual (0)
Continuous (1)
Loop operation using the point table selected at the
start of the operation (2)
Individual (0)
Continuous (1)
Loop operation using the point table selected at the
start of the operation (2)
Individual (0)
Continuous (1)
Loop operation using the point table selected at the
start of the operation (2)
Individual (0)
Continuous (1)
Loop operation using the point table selected at the
start of the operation (2)