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

Page: 380 / 1218

Position control under vector control and PM sensorless vector control Parameters
5 - 178
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.
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".
●
Select vector control or PM sensorless vector control to select the position control method.
I001538E
Fig. 5-69: Operation
Pr. 428 setting Command pulse train type During forward rotation During reverse rotation
0 to 2
Negative
logic
Pulse train + rotation
direction sign
3 to 5
Positive
logic
Pulse train + rotation
direction sign
Tab. 5-63: Setting of parameter 428
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.
Forward rotation
Reverse rotation
Actual rotation
Base signal
0.1s
Servo on (LX)
Forward stroke end (STF)
Reverse stroke end (STR)
Operation ready completion (RDY)
Inverter pulse train command
Sign signal (NP)
In-position (Y36)
L H
JOG
NP
JOG
NP
H
L