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Wiring
2.1 Wiring
2.1.1
Terminal connection diagram
Sink logic
*1. DC reactor (FR-HEL)
Be sure to connect the DC reactor
Main circuit terminal
supplied with the FR-A720-02880 (FR-
A740-01440) or more.
Control circuit terminal
When using the FR-A720-02150 (FR-
A740-01100) with LD or SLD set,
always use a DC reactor (option).
When a DC reactor is connected to the
FR-A720-02150 (FR-A740-01100) or
less, remove the jumper across P1-P/+.
Three-phase AC
power supply
*2. To supply power to the
control circuit separately,
remove the jumper across
R1/L11 and S1/L21.
Control input signals (No voltage input allowed)
Terminal functions vary with
the input terminal
assignment (Pr. 178 to Pr. 189)
(Refer to page 235)
holding selection
Multi-speed
selection
*3. JOG terminal can be used
as pulse train input terminal.
Use Pr. 291 to select
JOG/pulse.
Second function selection
*4. AU terminal can be
used as PTC input
terminal.
Terminal 4 input selection
(Current input selection)
Selection of automatic restart
after instantaneous
Contact input common
(Common for external power supply transistor)
Frequency setting signal (Analog)
Frequency setting
potentiometer
1/2W1k Ω
*6
* 5. Terminal input specifications
can be changed by analog
input specifications
Auxiliary
switchover (Pr. 73, Pr. 267).
input
Set the voltage/current input
switch in the OFF position to
Terminal
select voltage input (0 to 5V/0
4 input
to10V) and ON to select
(Current
current input (4 to 20mA).
input)
(Refer to page 291)
*6 . It is recommended to use 2W1kΩ
when the frequency setting signal
is changed frequently.
CAUTION
· To prevent a malfunction due to noise, keep the signal cables more than 10cm (3.94inches) away 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.
· Set the voltage/current input switch correctly. Different setting may cause a fault, failure or malfunction.
14
Earth
(Ground)
MC
MCCB
R/L1
S/L2
T/L3
R1/L11
Jumper
S1/L21
*2
Earth
(Ground)
Forward
STF
rotation
start
STR
Reverse
rotation
start
STOP
Start self-
RH
High speed
RM
Middle
speed
Low speed
JOG
Jog mode
MRS
Output stop
RES
Reset
power failure
SD
24VDC power supply
10E(+10V)
10(+5V)
3
2
2
5
1
(+)
1
(-)
(+)
4
(-)
Connector
for plug-in option
connection
Brake unit
*1
(Option)
R
*8
Jumper
Jumper
Jumper
P1
P/+
PX
PR
R
Inrush current
limit circuit
ON
EMC filter
ON/OFF
OFF
connecter
*9
Main circuit
Control circuit
RL
*3
RT
*4
AU
AU
PTC
CS
24V
PC
PU
connector
*5
Voltage/current
input switch
4 2
ON
USB
OFF
connector
0 to 5VDC
(Initial value)
0 to 10VDC
selected
*5
0 to 20mADC
(Analog common)
0 to ± 10VDC
(Initial value)
selected
0 to ± 5VDC
*5
4 to 20mADC
(Initial value)
0 to 5VDC
*5
selected
0 to 10VDC
Option connector 1
Option connector 2
Option connector 3
Terminating
resistor
*7. A CN8 connector (for MT-BU5) is provided with
the FR-A720-02880 (FR-A740-01440) or more.
*8. Brake resistor (FR-ABR)
Remove the jumper across terminal PR-PX
when connecting a brake resistor.
(FR-A720-00030 to 00330 (FR-A740-00015 to 00170))
CN8
Terminal PR is provided for the FR-A720-00030
N/-
*7
to 00900 (FR-A740-00015 to 00440).
Install a thermal relay to prevent an overheat
and burnout of the brake resistor.
(Refer to page 41)
U
V
W
*9.The FR-A720-00030 and 00050
are not provided with the EMC
filter ON/OFF connector. (Always on)
C1
Terminal functions
B1
Relay output 1
vary with the output
(Fault output)
terminal assignment
A1
(Pr. 195, Pr. 196)
(Refer to page 243)
C2
B2
Relay output 2
A2
Open collector output
RUN
Running
Terminal functions
SU
vary with the output
Up to frequency
terminal assignment
IPF
Instantaneous
(Pr. 190 to Pr. 194)
power failure
(Refer to page 243)
OL
Overload
FU
Frequency detection
SE
Open collector output common
Sink / source common
* 10. It is not necessary
*11. FM terminal can
when calibrating the
indicator from the
operation panel.
+
-
FM
*11
Calibration
resistor * 10
SD
AM
(+)
Analog signal output
(0 to 10VDC)
5
(-)
RS-485 terminals
TXD+
Data transmission
TXD-
RXD+
Data reception
RXD-
SG
GND
VCC
(Permissible load
5V
current 100mA)
Motor
IM
Earth (Ground)
Relay output
be used for pulse
train output of open
collector output
using Pr. 291.
Indicator
(Frequency meter, etc.)
Moving-coil type
1mA full-scale
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