Mitsubishi Electric FR-A800 Series Instruction Manual page 312

• 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 shifting speed can be changed.
• Perform home position return at the motor switchover.
 Selecting the home position return method (Pr.1282 to Pr.1288)
Pr.1282 Home position return
setting
Dog type
0
Vector Vector Vector
Count type
1
Vector Vector Vector
Data set type
2
Vector Vector Vector
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method
Deceleration starts when the Proximity dog signal is turned ON. For the home position after turn OFF
of the Proximity dog signal, the position specified by the first Z-phase signal or the position of the first
Z-phase signal shifted by the home position shift amount (Pr.1285, Pr.1286) is used.
*1
Point table selection signal
Deceleration starts when the proximity dog signal is turned ON. After the proximity dog, the motor
travels the specified travel distance (Pr.1287, Pr.1288). Then, it uses the position specified by the first
Z-phase signal or position of the Z-phase signal shifted by the home position shift amount (Pr.1285,
Pr.1286).
*1
Point table selection signal
The position at which the start signal is input is used as the home position.
PM PM PM
search engine
Position command
speed
0
Z-phase
X76
LX
STF
Position command
speed
0
Z-phase
X76
LX
STF
Position command speed
0
Point table selection signal
LX
STF
5.5 Position control under vector control and PM sensorless vector control
Description
Home position
Point table 1
return speed
deceleration time
Creep speed
Point table 1
acceleration time
Proximity dog
Home position
Point table 1
return speed
deceleration time
Creep speed
Travel distance
Point table 1
after proximity
acceleration time
dog
Proximity dog
1
2
3
4
5
6
7
8
Home position
shift amount
9
Home
position
Time
10
Home position
shift amount
Home
position
Time
Home position
Time
311
5. PARAMETERS