Mitsubishi Electric FR-A820-00046 (0.4K) Instruction Manual page 296

• The following figure shows an operation example using the following point table.
Target position
Point table
Upper Lower
1 5 0
2 3 0
3 10 0
4 6 0
Position command
speed
Position feed length
Servo ON
(LX)
STF
RH
RM
RL
• 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.
• Set the home position return method (Pr.1282).
• Set the home position return speed (Pr.1283)
• Set the home position creep speed (Pr.1284)
• Set the home position return shift amount if necessary(Pr.1286 × 10000 + Pr.1285).
• Set the post proximity dog travel distance if necessary. (Pr.1288 × 10000 + Pr.1287)
2.
Turn OFF all point table selections.
• Turn OFF all RH, RM, RL and REX signals.
3.
Turn ON the Pre-excitation/servo ON (LX) signal.
4.
Turn ON the start signal (STF or STR).
• Home position return is performed according to the settings.
NOTE
• The setting values of the point table 1 are used as acceleration/deceleration time.
• After turning ON the start signal, only the setting values of Pr.1283 Home position return speed, Pr.1284 Home position
return creep speed can be changed.
• Perform home position return at the motor switchover.
Maximum Acceleration
speed (Hz) time (s)
30 1
20 Invalid
10 Invalid
5 Invalid
Acceleration time (1 s)
of point table 1
30 Hz
(Pr.4)
20 Hz
(Pr.5)
0
50000
0
ON
5.5 Position control under vector control and PM sensorless vector control
Deceleration Dwell time
time (s) (ms)
1 0
Invalid 0
Invalid 0
Invalid 0
Deceleration time (1 s)
of point table 1
10 Hz
(Pr.6)
30000 20000
50000 80000 100000
ON
ON
Auxiliary function
1 (absolute position,
continuous)
11 (incremental
position, individual)
1 (absolute position,
continuous)
10 (incremental
position, individual)
5 Hz
(Pr.24)
Time
60000
160000
5. PARAMETERS
1
2
3
4
5
6
7
8
9
10
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