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14
Wiring
2.1 Wiring
2.1.1
Terminal connection diagram
NOTE
To prevent a malfunction caused by noise, separate the signal cables more than 10cm (3.94inches) from the power
cables. Also separate the main circuit wire of the input side and the output side.
After wiring, wire offcuts must not be left in the inverter.
Wire offcuts can cause an alarm, failure or malfunction. Always keep the inverter clean. When drilling mounting holes
in an enclosure etc., take care not to allow chips and other foreign matter to enter the inverter.
The output of the single-phase power input specification is three-phase 200V.
Earth 
(Ground)
Motor
IM
Earth (Ground)
Three-phase 
AC power 
supply
MCCB
MC
R/L1
P1
P/+
PR N/-
S/L2
T/L3
U
V
W
Earth
(Ground)
*7  Brake resistor (FR-ABR, MRS type, MYS 
type) 
Install a thermal relay to prevent an 
overheat and burnout of the brake resistor. 
(The brake resistor can not be connected 
to the FR-D720-008, 014 and FR-D720S-
008, 014.)
Forward 
rotation start
Reverse 
rotation start
Middle 
speed
High 
speed
Low 
speed
Control input signals (No voltage input allowed)
24VDC power supply 
(Common for external power supply transistor)
Contact input common
STR
STF
RH
RM
RL
SD
PC
Relay output
Running
Open collector output
Open collector output common
Sink/source common
RUN
SE
A
B
C
Frequency setting signals (Analog)
2 0 to 5VDC
10(+5V)
2
3
1
4 4 to 20mADC
Frequency 
setting 
potentiometer
1/2W1k
Ω
Terminal 4 
input
(Current 
input)
(+)
(-)
5(Analog common)
*5  It is recommended to use 2W1k
Ω 
when the frequency setting signal 
is changed frequently. 
*5
*2 When using terminals PC-
SD as a 24VDC power 
supply, take care not to 
short across terminals 
PC-SD.
PU
connector
*
1.  DC reactor (FR-HEL) 
When connecting a DC reactor, remove the 
jumper across P1-P/+
Control circuit terminal
Main circuit terminal
Sink logic
Jumper
*1
*7
*6
*2
*3
*4
Terminal functions vary 
with the input terminal 
assignment (
Pr. 178 to 
Pr. 182)
Multi-speed selection
Terminal functions vary by 
Pr. 190 RUN terminal function 
selection
Terminal functions vary 
by 
Pr. 192 A,B,C terminal 
function selection
SINK
SOURCE
V
I
*4
0 to 5VDC
(0 to 10VDC)
0 to 10VDC
*4 Terminal input 
specifications can be 
changed by analog input 
specifications switchover 
(
Pr. 267). Set the 
voltage/current input 
switch in the "V" position 
to select voltage input (0 
to 5V/0 to10V) and "I
(initial value) to select 
current input (4 to 20mA).
Voltage/current 
input switch
Main circuit
Control circuit
R
Relay output
(Fault output)
Brake unit
(Option)
*8  Common terminal of 
terminal SO is terminal SC. 
(Connected to terminal SD 
inside of the inverter.)
*3 Terminal input specifications 
can be changed by analog 
input specifications 
switchover (
Pr. 73). 
Terminal 10 and terminal 2 
are used as PTC input 
terminal (
Pr. 561).
Output shutoff (Line 1)
Output shutoff (Line 2)
Common terminal
Safety stop signal
S1
S2
SC
Safety monitor output *8
SO
Shorting 
wire
Single-phase 
AC power 
supply
MCCB
MC
R/L1
S/L2
Single-phase power input
*6  A brake transistor is not built-in to the 
FR-D720-008, 014 and FR-D720S-008, 
014.
AM
5
(+)
(-)
Analog signal output
(0 to 10VDC)
Inrush current
limit circuit
24V
Output shutoff 
circuit
For manufacturer setting