Mitsubishi Electric FR-A800 Series Instruction Manual page 318

 Connection diagram
• Connection with the positioning module of RD75P type MELSEC iQ-R series is also available.
Positioning module
MELSEQ iQ-R RD75P
FLS
RLS
DOG
STOP
CLEAR
PULSE F
*7
PULSE R
CLRCOM
PG024
PG0COM
RDYCOM
COM
READY
*1 The pin number differs according to the encoder used. Speed control, torque control, and position control by pulse train input are available with
or without the Z-phase being connected.
*2 Connect the encoder so that there is no looseness between the motor and motor shaft. Speed ratio must be 1:1.
*3 Earth (ground) the shield of the encoder cable to the enclosure using a tool such as a P-clip. (Refer to
*4 For the complementary, set the terminating resistor selection switch to the OFF position (initial status). (Refer to
*5 A separate external power supply of 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. When the 24 V power supply of the FR-A8AL is used, the power is supplied to the encoder through terminal
PG24. When the 5 V/12 V power supply of the FR-A8AL is used, the power is supplied to the encoder through terminal PGV. Do not use the
external power supply simultaneously with the 5 V/12 V power supply or the 24 V power supply. Make the voltage of the external power supply
the same as the encoder output voltage, and connect the external power supply between terminals PG and SD.
*6 Assign the function using Pr.178 to Pr.184, Pr.187 to Pr.189 (Input terminal function selection).
*7 The pulse signal from the position module is available for both open collector and differential line driver. However, the connections are different.
(The following figure shows an example for differential line driver.) For the connection method, refer to the Instruction Manual of the FR-A8AL.
 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 second. When the LSP signal (forward stroke end) or the LSN signal (reverse
stroke end) 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.
• To use the LSP or LSN signal, set the corresponding number in the following table in any of Pr.178 to Pr.189 (Input
terminal function selection) to assign the function to an input terminal. When the LSP and LSN signals are not assigned,
the STF signal is used as the forward stroke end signal, and the STR signal is used as the reverse stroke end signal.
Pr.178 to Pr.189 setting
88
89
Downloaded from ManualsNet.com
MCCB
Three-phase
AC power
supply
Forward stroke end
Reverse stroke end
Pre-excitation (servo on)
Torque limit
(+)
command
(-)
( ± 10V)
Signal
LSP
LSN
search engine
Vector-control-dedicated motors
Inverter
U
R/L1
S/L2 V
W
T/L3
Earth
LSP
(Ground)
LSN
LX *6
SD
1
5
FR-A8AL
PA
SD Complementary
PAR
CR
PB
Differential
PP
PBR
PGP
Terminating
resistor PZ
NP
ON
PZR
PGN
PG
SD
OFF
SD
VDD
*4
PG24
FPZ2
*3
VDD *5
OPC
RDY
5.5 Position control under vector control and PM sensorless vector control
U
V
M
W
E
A *1
B
C
D
Encoder
F
G
*2
S
R
page 87.)
page 87.)
1
2
3
4
5
6
7
8
9
10
317
5. PARAMETERS