Mitsubishi FR-A800

Position control under vector control and PM sensorless vector control
PARAMETERS
237
5
Acceleration/deceleration time
• Set the acceleration/deceleration time for parameters corresponding to each point table.
• The frequency that will be 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 s.
• 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.
• 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 or continuous. 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 that will be the
last of the continuously operated point tables.
• 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, 10, 100 or 110" can be set to Pr.1281).
Auxiliary function
parameter setting
Sign
(100s digit)
Command method
(10s digit)
Operation method
(1s digit)
0
Plus (0)
Absolute position
command (0)
Individual (0)
1 Continuous (1)
10 (initial value)
Incremental position
command (1)
Individual (0)
11 Continuous (1)
100
Minus (1)
Absolute position
command (0)
Individual (0)
101 Continuous (1)
110
Incremental position
command (1)
Individual (0)
111 Continuous (1)