Mitsubishi Electric FR-A800 Series Instruction Manual page 311

5.
The loop of operations 1 to 4 executes.
Position command
speed
0
Position feed
length
0
Servo ON
(LX)
STF
RM
 Example 3 of positioning operation using point table (variable speed
operation)
• The maximum frequency can be changed during positioning operation. Use as many point tables as the number of
maximum speeds to be set.
• The following figure shows an operation example using the following point table.
Target position
Point table
Upper
1 5
2 3
3 10
4 6
Position command
Position feed length
• Set "0" as the dwell time to perform variable speed operation.
 Return to home position during point table positioning
• Home position return is performed to match the command coordinates with the machine coordinates.
• The returned home position can be set as point 0, and positioning operation is available using this.
 Home position return procedure
1.
Set parameters related to home position return.
310
5. PARAMETERS
5.5 Position control under vector control and PM sensorless vector control
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Point table Point table Point table
No.2 No.3 No.4
20Hz
10Hz 10Hz
5Hz
100ms 100ms
30000 60000
70000
100000
70000
ON
ON
ON
Maximum
speed (Hz)
Lower
0 30
0 20
0 10
0 5
Acceleration time (1 s)
speed
of point table 1
30 Hz
(Pr.4)
0
50000
0
Servo ON
(LX)
STF
ON
RH
RM
RL
search engine
Point table Point table
No.2 No.3
20Hz
100ms 100ms 100ms
10Hz
70000 -130000
160000 230000 100000
Acceleration Deceleration
time (s) time (s)
1 1
Invalid Invalid
Invalid Invalid
Invalid Invalid
Deceleration time (1 s)
of point table 1
20 Hz
(Pr.5)
10 Hz
(Pr.6)
30000 20000
50000 80000 100000
ON
ON
Point table Point table Point table
No.4 No.2 No.3
20Hz
5Hz
100ms 100ms
10Hz
60000
70000 -130000
160000 230000
Dwell time
Auxiliary function
(ms)
1 (absolute position,
0
continuous)
11 (incremental
0
position, individual)
1 (absolute position,
0
continuous)
10 (incremental
0
position, individual)
5 Hz
(Pr.24)
Time
60000
160000
Time
100ms
100000