Mitsubishi Electric FR-A800 Series Instruction Manual page 93

• Position control
Positioning unit
MELSEC-iQ-R RD75P[]
MELSEC-Q QD75P[ ]N/QD75P[ ]
MELSEC-L LD75P[ ]
*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 switches in the OFF position. (Refer to
*5 A separate external power supply 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 the same as the encoder output voltage, and connect the external power supply between terminals
PG and SD.
*6 For terminal compatibility of the FR-JCBL, FR-V7CBL, and FR-A8AP, refer to
*7 Single-phase power supply (200 V/50 Hz, 200 to 230 V/60 Hz) is used for the fan for a 7.5 kW or lower dedicated motor.
*8 Connect the recommended 2W1kΩ resistor between terminals PC and OH. (Recommended product: MOS2C102J 2W1kΩ by KOA Corporation)
Insert the input line and the resistor to a 2-wire blade terminal, and connect the blade terminal to terminal OH. (For the recommended 2-wire blade
terminals, refer to
Insulate the lead wire of the resistor, for example by applying a contraction tube, and shape the wires so that the resistor and its lead wire do not
touch other cables. Caulk the lead wire securely together with the thermal protector input line using a 2-wire blade terminal. (Do not subject the
lead wire's bottom area to an excessive pressure.)
To use a terminal as terminal OH, assign the OH (External thermal relay input) signal to an input terminal. (Set "7" in any of Pr.178 to Pr.189.
For details, refer to
*9 Assign the function using Pr.178 to Pr.184, Pr.187 to Pr.189 (Input terminal function selection).
*10 When position control is selected, terminal JOG function is invalid and simple position pulse train input terminal becomes valid.
*11 Assign the function using Pr.190 to Pr.194 (Output terminal function selection).
92
2. INSTALLATION AND WIRING
2.8 Connection to a motor with encoder (Vector control)
Downloaded from ManualsNet.com
Vector control dedicated motor (SF-V5RU, SF-THY), 12 V complementary
Three-phase
AC power
supply
FLS
RLS
DOG
STOP
Forward stroke end
Reverse stroke end
Pre-excitation/servo on
Clear signal
CLEAR
Pulse train
PULSE F
Sign signal
PULSE R
24 VDC power supply
CLRCOM
PULSE COM
RDYCOM
COM
Preparation ready signal
READY
Torque limit command
(+)
(±10 V) (-)
page 74.)
page 521.)
When OH signal is assigned to terminal RH (Pr.182 = "7")
Insulate
Resistor (2 W1kΩ)
Insulate
search engine
MCCB
*7
Three-phase
AC power supply
MCCB
MC
R/L1
Inverter
S/L2
T/L3
External thermal protector
relay input
*8
STF
FR-A8AP
STR
LX
*9
CLR
*9
JOG
*10
NP
Differential
*9
line driver
PC
SE
Complementary
Terminating
resistor
ON
RDY
*11
5
OFF
1
page
RH (OH)
PC
2-wire blade terminal
To thermal protector
MC OCR
SF-V5RU, SF-THY
A
B
C
U U
V V
W W
E
Earth
(ground)
Thermal
PC
protector
2 W 1 kΩ G1
RH(OH)
G2
SD
*1
PA1 A
PA2
B
PB1 C
PB2
D
F
PZ1
PZ2 G
PG S
SD R
PG
SD
*3
12 VDC
(+) (-)
*4 *6
power supply
page 93.)
page 88.)
90.
FAN
M
PLG
*2
*5