Wiring; Terminal Connection Diagram; Main Circuit; Control Circuit - Mitsubishi Electric FR-B-750 to 75K Instruction Manual

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 75K or more.
Control circuit terminal When a DC reactor is connected to
the 55K 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 118)
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).
Set the voltage/current input
switch in the OFF position to
Terminal
select voltage input (0 to 5V/0
4 input
to 10V) and ON to select
(Current
current input (4 to 200mA)
(Refer to page 166)
*6 . It is recommended to use 2W1kΩ
when the frequency setting signal
is changed frequently.
CAUTION
· It is mandatory to use the Mitsubishi pressure-resistant, explosion-proof motor with the inverter which has been approved for
combination by the Labor Ministry's explosion-proof certification. Therefore, always use the Mitsubishi pressure-resistant,
explosion-proof motor in combination with its approved driving inverter.
· To prevent a malfunction due to noise, keep the signal cables more than 10cm away from the power cables.
· 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 in right position. Operation with a wrong 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
RL
Low speed
JOG
Jog mode
RT
MRS
Output stop
RES
Reset
AU
CS
power failure
SD
PC
24VDC power supply
10E(+10V)
10(+5V)
3
2
2
5
1
(+)
1
input (-)
(+)
4
(-)
input)
Connector
Option connector 1
for plug-in option
connection
Option connector 2
Option connector 3
Brake unit
*1
(Option)
Jumper
Jumper Jumper
P1 P/+ PX PR N/-
R
Inrush current
limit circuit
ON
EMC filter
ON/OFF
OFF connecter
*8

Main circuit

Control circuit

C1
C2
B2
A2
RUN
*3
SU
IPF
*4
OL
AU
FU
PTC
24V
PU
connector
*5 Voltage/current
input switch
4 2
ON
OFF
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
TXD+
4 to 20mADC (Initial value)
TXD-
0 to 5VDC
*5
selected
0 to 10VDC
RXD+
RXD-
Terminating
VCC
resistor
*7. A CN8 connector is provided with the 75K
or more.
CN8
*7
Explosion-proof
motor
U
V
IM
W
Earth (Ground)
*8.The FR-B-750, FR-B3(N)450,750
are not provided with the EMC
filter ON/OFF connector. (Always on)
Relay output
Terminal functions
B1
Relay output 1
vary with the output
(Alarm output)
terminal assignment
A1
(Pr. 195, Pr. 196)
(Refer to page 125)
Relay output 2
Open collector output
Running
Terminal functions
vary with the output
Up to frequency
terminal assignment
Instantaneous
(Pr. 190 to Pr. 194)
power failure
(Refer to page 125)
Overload
Frequency detection
SE
Open collector output common
Sink / source common
* 9. It is not necessary
*10. FM terminal can
be used for pulse
when calibrating the
train output of open
indicator from the
collector output
operation panel.
using Pr.291.
+
-
Indicator
FM
(Frequency meter, etc.)
*10
Calibration
Moving-coil type
resistor * 9
SD
1mA full-scale
AM
(+)
Analog signal output
(0 to 10VDC)
5
(-)
RS-485 terminals
Data transmission
Data reception
SG
GND
(Permissible load
5V
current 100mA)