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

Page: 371 / 1218

Parameters Position control under vector control and PM sensorless vector control
FR-A800 5 - 169
Return to home position during point table positioning
●
Home position return is performed to match the command coordinates with the machine coor-
dinates.
●
The returned home position can be set as point 0, and positioning operation is available using this.
●
Home position return procedure
Set parameters related to home position return.
– Set the home position return method (Pr. 1282).
– Set the speed for home position return operation (Pr. 1283).
– Set the creep speed for home position return operation (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).
Turn OFF all point table selections.
– Turn OFF all RH, RM, RL and REX signals.
Turn ON the Pre-excitation/servo ON (LX) signal.
Turn ON the start signal (STF or STR).
– Home position return is performed according to the settings.
I003098E
Fig. 5-63: Positioning operation by point tables
NOTES 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"
or Pr. 1284 "Home position return creep speed" can be changed.
Position
command
speed
Position feed
length
Servo ON
(LX)
STF
RM
Point table No. 2 Point table No. 2 Point table No. 2 Point table No. 3 Point table No. 3 Point table No. 3 Point table No. 4 Point table No. 4
20 Hz 20 Hz 20 Hz
10 Hz
10 Hz 10 Hz
5 Hz 5 Hz
Time
0 7000 10000 16000 23000 10000 16000 23000 10000
7000 3000 6000 7000 -13000 6000 7000 -13000
ON
ON
ON