Wiring - Mitsubishi Electric 800 Series Instruction Manual

Terminal connection diagrams
2

WIRING

2.1
Terminal connection diagrams
 FM type
Sink logic
Main circuit terminal
Control circuit terminal
Three-phase
AC power
supply
Control input signals
(No voltage input allowed) 
Forward rotation start
Reverse rotation start
Start self-holding selection
Multi-speed
selection
Second function selection
Terminal 4 input selection
(Current input selection)
Selection of automatic restart
Contact input common
(Common for external power supply transistor)
Frequency setting signals (Analog)
Frequency setting
potentiometer
1/2W1kΩ 
Safety stop signal
Safety stop input (Channel 1)
Safety stop input (Channel 2)

For the FR-A820-03800(75K) or higher, the FR-A840-02160(75K) or higher, and when a 75 kW or higher motor is used, always connect a DC reactor (FR-HEL), which
is available as an option. (To select a DC reactor, refer to the Instruction Manual (Detailed), and select one according to the applicable motor capacity.)
When connecting a DC reactor, if a jumper is installed across terminals P1 and P/+, remove the jumper before installing the DC reactor. (The jumper is not installed for
the FR-A820-03800(75K) or higher and the FR-A840-02160(75K) or higher.)

When using separate power supply for the control circuit, remove the jumper between R1/L11 and S1/L21.

The function of these terminals can be changed with the input terminal assignment (Pr.178 to Pr.189). (Refer to

Terminal JOG is also used as the pulse train input terminal. Use Pr.291 to choose JOG or pulse.

Terminal input specifications can be changed by analog input specification switchover (Pr.73, Pr.267). To input a voltage, set the voltage/current input switch OFF. To
input a current, set the voltage/current input switch ON. Terminals 10 and 2 are also used as a PTC input terminal. (Pr.561) (Refer to the Instruction Manual (Detailed).)

It is recommended to use 2 W 1 kΩ when the frequency setting signal is changed frequently.

If connecting a brake resistor, remove the jumper between PR and PX (FR-A820-00046(0.4K) to 00490(7.5K), FR-A840-00023(0.4K) to 00250(7.5K)).

Connect a brake resistor across terminals P/+ (P3) and PR. (Terminal PR is equipped in FR-A820-00046(0.4K) to 01250(22K), FR-A840-00023(0.4K) to 01800(55K).)
Install a thermal relay to prevent overheating and damage of discharging resistors. (Refer to the Instruction Manual (Detailed).)

Do not connect the DC power supply (under DC feeding mode) to terminal P3.

The function of these terminals can be changed with the output terminal assignment (Pr.195, Pr.196). (Refer to

The function of these terminals can be changed with the output terminal assignment (Pr.190 to Pr.194). (Refer to

Terminal F/C (FM) can be used to output pulse trains as open collector output by setting Pr.291.

Not required when calibrating the scale with the operation panel.
NOTE
• To prevent a malfunction due to noise, keep the signal cables 10 cm or more away from the power cables. Also, separate the main circuit cables at the input side from
the main circuit cables at 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 caution not to allow chips and other foreign matter to enter the inverter.
• Set the voltage/current input switch correctly. Incorrect setting may cause a fault, failure or malfunction.
4
WIRING
DC reactor
(FR-HEL) 
Jumper
Earth
(Ground)
P1
MC
MCCB
R/L1
S/L2
T/L3
R1/L11
Jumper
 S1/L21
Earth
(Ground)
STF
STR
STP(STOP)
RH
High speed
RM
Middle speed
RL
Low speed

JOG
Jog operation
RT
MRS
Output stop
RES
Reset
AU
CS
after instantaneous
power failure
SD
PC
24VDC power supply
24V external power
+24
supply input
SD
Common terminal
10E(+10V)
10(+5V)
3
DC0 to 5V
2
2
DC0 to 10V selectable
DC0 to 20mA
5
1
(Analog common)
DC0 to ±10V
Auxiliary (+)
1
DC0 to ±5V selectable
(-)
input
DC4 to 20mA
Terminal 4 input
(+) 4
DC0 to 5V
(-)
(Current input)
DC0 to 10V
PU connector
USB A connector
USB mini B connector
24V
Shorting wire
PC
S1
S2
Output shutoff
circuit
SIC
Safety stop input common
SD
Brake resistor
(FR-ABR)  
Brake unit
R
(Option)
Earth
(Ground)
Jumper
P/+ PX PR N/-
R
U
Inrush current
V
limit circuit
W
ON
EMC filter
ON/OFF
connecter
OFF
Main circuit
Control circuit
C1
B1
Relay output 1
(Fault output)
A1
C2
B2
Relay output 2
A2
RUN
Running
SU
Up to frequency
IPF
Instantaneous
power failure
OL
Overload
FU
Frequency detection
SE
Open collector output common
Sink/source common
24V
PORT 1
PORT 2
Connector for plug-in option
Connector 2
Voltage/current
 Connector 3
input switch
ON
F/C
OFF
(FM)
2 4

Calibration
Initial value
resistor 
SD

AM
Initial value 5

Initial value
TXD+

selectable
TXD-
RXD+
RXD-
GND
(SG)
Terminating
VCC
resistor
So
(SO)
Safety monitor output
SOC
Safety monitor output common
FR-A820-00770(15K) to 01250(22K),
FR-A840-00470(18.5K) to 01800(55K)
DC reactor Brake resistor 
(FR-HEL) 
Brake unit
(Option)
R
Jumper
P1 P/+ P3 PR N/-
Inrush
current
limit circuit
Motor
M
Earth (Ground)
Relay output 
Open collector output 
CC-Link IE TSN
communication connector
connection
+ - Indicator
(Frequency meter, etc.)
Moving-coil type
1mA full-scale
(+) Analog signal output
(0 to ±10VDC)
(-)
RS-485 terminals
Data
transmission
Data
reception
GND
5V
(Permissible load current 100mA)
page 13.)
page 13.)
page 13.)