Mitsubishi Electric FR-A700 EC, Instruction Manual

Page: 76 / 826

Connection of motor with encoder (vector control) Wiring
3 - 38
Wiring
●
Speed control
The pin number differs according to the encoder used. Speed control and torque control are
properly performed even without connecting Z phase.
Connect the encoder so that there is no looseness between the motor and motor shaft.
Speed ratio should be 1:1.
Earth (Ground) the shielded cable of the encoder cable to the enclosure with a P clip, etc.
(Refer to page 3-41.)
For the complementary, set the terminating resistor selection switch to off position. (Refer
to page 3-35.)
A separate power supply of 5V/12V/15V/24V is necessary according to the encoder power
specification. When performing orientation control together, an encoder and power supply
can be shared.
For terminal compatibility of the FR-JCBL and FR-A7AP, refer to page 3-37.
Standard motor with encoder (SF-JR),
5V differential line driver Vector control dedicated motor,
12V complimentary
I001443E I001444E
Tab. 3-16: Speed control
NOTE The figure above shows the connection when using sink logic.
Three-phase
AC power
supply
Forward rotation start
Reverse rotation startf
Contact input common
Frequency
command
Frequency
setting
potentiometer
1/2 W, 1k
Ω
Torque limit
command
(±10V)
Inverter
SF-JR motor with
encoder
Earth
5V DC power supply
Differential
Complimentary
Terminating
resistor
ON
M
3~
Encoder
OFF
Inverter
Earth
Differential
Compli-
mentary
Terminating
resistor
ON
12V DC
power supply
OFF
Encoder
M
3~