Orientation Control; Wiring Example - Mitsubishi Electric 800 Series Instruction Manual

4

ORIENTATION CONTROL

This function is used with an encoder installed to the spindle of a machine tool, etc. to allow a rotary shaft to be stopped at the
specified position (oriented).
For the details of the parameters used for orientation control, refer to the Instruction Manual (Detailed) of the inverter.
4.1

Wiring example

MCCB MC
Three-phase
AC power
supply
Forward rotation start
Reverse rotation start
Orientation command
Contact input common
V/F V/F V/F
Inverter
R/L1 U
S/L2 V
W
T/L3
Earth
STF
(Ground)
FR-A8APS
STR
DT+
∗1
X22
DT-
SD
CK+
∗2
ORA
ORM CK-
∗2
UP
SE
UN
SD
∗4
FR-A8AX
∗5
X15
X14
X1
X0
DY
Magnetic flux Vector Vector Vector
Magnetic flux Magnetic flux
U
V
M 
Use Pr.178 to Pr.189 (input terminal
W
function selection) to assign the function
E
to any of terminal.
Refer to the Instruction Manual (Detailed)
for details of Pr.178 to Pr.189 (input
DATA
terminal function selection).

DATA Use Pr.190 to Pr.196 (output terminal
function selection) to assign the function
CLOCK
to any of terminal.
Refer to the Instruction Manual (Detailed)
CLOCK
for details of Pr.190 to Pr.196 (output
Encoder
Up terminal function selection).

Connect the encoder so that there is no
0v
∗3
looseness between the motor and motor
shaft. Speed ratio should be 1:1.

Earth (ground) the shield of the encoder
cable to the enclosure using a tool such as
a P-clip.

When a stop position command is input
from outside, a plug-in option FR-A8AX is
necessary. Refer to the Instruction Manual
(Detailed) for details of external stop
position command.
ORIENTATION CONTROL
4
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