Mitsubishi Electric FR-A820-00046 Instruction Manual page 380

Position control under vector control and PM sensorless vector control
Operation outline
If the Pre-excitation/servo ON (LX) signal is turned ON, output shutoff is canceled and the Position
control preparation ready (RDY) signal is turned ON after 0.1 s. When STF (forward stroke end signal)
or STR (reverse stroke end signal) is turned ON, the motor rotates according to the command pulse.
When the forward (reverse) stroke end signal is turned OFF, the motor does not rotate in the corre-
sponding direction.
Operation ready completion (RDY)
Fig. 5-69:
Selecting the pulse train type (Pr. 428 and NP signal)
● Set Pr. 419 "Position command source selection" = "2" (simple pulse train position command).
● Set "68" in any of Pr. 178 to Pr. 189 (selection of the input terminal function) to assign Simple
position pulse train sign (NP).
● Select the command pulse train with Pr. 428 "Command pulse selection".
Pr. 428 setting
0 to 2
3 to 5
Tab. 5-63:
● Select vector control or PM sensorless vector control to select the position control method.
NOTE If Pr. 419 = "2" (simple pulse train position command) is set, the terminal JOG is used for the simple
position pulse train input regardless of the Pr. 291 "Pulse train I/O selection" pulse train input/out-
put selection setting.
5 - 178
Forward rotation
Actual rotation
Reverse rotation
Base signal
Servo on (LX)
Forward stroke end (STF)
Reverse stroke end (STR)
Inverter pulse train command
Sign signal (NP)
In-position (Y36)
Operation
Command pulse train type
Negative Pulse train + rotation
logic direction sign
Positive Pulse train + rotation
logic direction sign
Setting of parameter 428
0.1s
During forward rotation
JOG
NP
JOG
NP
During reverse rotation
L H
L
H
Parameters
I001538E