Mitsubishi Electric 800 Series Instruction Manual page 487

(A) Application parameters
Machine end orientation connection diagram (Vector control)
• To perform machine end orientation control, the following settings are required.
- Install a plug-in option (FR-A8AP/FR-A8AL or FR-A8APR) and a control terminal option (FR-A8TP) to the inverter, a
motor end encoder to the control terminal option, and a machine end encoder to the plug-in option.
- Set Pr.862 Encoder option selection="1".
- Set Pr.393 Orientation selection="10 to 12". (Refer to
- Set the gear ratio by setting Pr.394 Number of machine side gear teeth and Pr.395 Number of motor side gear teeth.
(Refer to page 487.)
Three-phase
AC power
supply

The pin number differs according to the encoder used.

Use Pr.178 to Pr.182, Pr.185, or Pr.189 (Input terminal function selection) to assign the function to a terminal. (Refer to

Use Pr.190 to Pr.192, or Pr.195 (Output terminal function selection) to assign the function to a terminal. (Refer to

Connect the encoder so that there is no looseness between the motor and motor shaft. Speed ratio must be 1:1.

Earth (ground) the shield of the encoder cable to the enclosure using a tool such as a P-clip. (Refer to

For the differential line driver, set the terminating resistor selection switch to the ON position. (Refer to
Note that the terminating resistor switch should be set to the OFF position (initial status) when sharing the same encoder with another unit (NC,
etc.) having a terminating resistor under the differential line driver setting.
For the complementary, set the switch to the OFF position.

For terminal compatibility between the FR-A8TP and the FR-JCBL/FR-V7CBL, refer to the Instruction Manual of the FR-A8TP.

A separate power supply of 5 V/12 V/15 V is necessary according to the encoder power specification. When the encoder output is the differential
line driver type, only 5 V can be input. Make the voltage of the external power supply same as the encoder output voltage, and connect the
external power supply between PG and SD. If using the 24V power supply of the FR-A8TP, 24V power can be supplied from terminal PG24.
When performing encoder feedback control and Vector control together, an encoder and power supply can be shared.
The encoder and the power supply can be shared under orientation control, encoder feedback control, or vector control.

When a stop position command is input from outside, a plug-in option FR-A8AX is required. Refer to
command.
486
PARAMETERS
MCCB MC
Forward rotation start
Reverse rotation start
Orientation command
Contact input common
page 482.)
Inverter
U
R/L1
S/L2 V
W
T/L3
Earth
(Ground)
FR-A8TP
PA3
STF
PAR3
STR
∗2
X22
PB3
SD
PBR3
∗3
ORA
Differential
PZ3
ORM
∗3
PZR3
Complementary
SE
PG
SD
SD
Terminating
resistor ON PG
SD
∗6 ∗5
∗7 (+)
OFF
FR-A8AX FR-A8AP
∗9
X15
PA1
X14
PA2
Differential
X1 PB1
X0
PB2
Complementary
DY
PZ1
Terminating
PZ2
resistor ON
PG
∗6
SD
OFF
PG
SD
∗5
(+)
U
V
IM
W
E
C ∗1
R
A
N
Encoder
B
P
∗4
H
K
(-)
5 VDC power
∗8
supply
∗1
A
Machine end Machine end Machine end
encoder encoder encoder
A
(differential (differential (differential
B
line driver) line driver) line driver)
B
Encoder
Z
Z
∗4
+
-
(-) ∗8
Power supply
page
page 61.)
page 63.)
page 476 for the external stop position
page 415.)
370.)