Mitsubishi Electric 800 Series, Instruction Manual, Page: 226 / 727

Position control under vector control
PARAMETERS
225
5
5.5.5
Position control by inverter pulse train input
 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 corresponding 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 (Input terminal function selection) to assign Simple position pulse train sign (NP).
• Select the command pulse train with Pr.428 Command pulse selection .
• Select 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/output selection setting.
The simple position pulse train command can be input by pulse train input and sign signal (NP) to the JOG terminal.
Pr. Name
Initial
value
Setting range Description
419
B000 Position command
source selection
0
0
Simple position control by point table (position command
given by setting parameters)
2
Simple pulse train position command given by the pulse train
input to the inverter
428
B009 Command pulse
selection
0
0 to 2
Pulse train + rotation
direction sign
Negative logic
3 to 5 Positive logic
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
Vector Vector Vector
Actual rotation
Forward rotation
Reverse rotation
Base signal
Operation ready completion (RDY)
Forward rotation command (STF)
Reverse rotation command (STR)
Inverter pulse train command
Sign signal (NP)
In-position (Y36)
Servo on (LX)
0.1s
JOG
NP
H
L
JOG
NP H
L