Wiring - Mitsubishi Electric A800 Instruction Manual

3

WIRING

3.1
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)∗3
Forward rotation start
Reverse rotation start
Start self-holding selection
Multi-speed
Middle speed
selection
Jog operation
Second function selection
Terminal 4 input selection
(Current input selection)
Selection of automatic restart
after instantaneous
Contact input common
(Common for external power supply transistor)
24V external power
Common terminal
Frequency setting signals (Analog)
Frequency setting
potentiometer
1/2W1kΩ∗6
Terminal 4 input
(Current input)
Connector for plug-in option connection
Safety stop signal
Safety stop input (Channel 1)
Safety stop input (Channel 2)
Safety stop input common

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
When a DC reactor is connected to the FR-A820-03160(55K) or lower or the FR-A840-01800(55K) or lower, if a jumper is installed across the terminals P1 and P/+,
remove the jumper before installing the DC reactor.

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. (The 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

The 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.
DC reactor
(FR-HEL)∗1
Jumper Jumper
Earth
(Ground)
P1 P/+ PX
R
MCCB MC
R/L1
Inrush current
S/L2
limit circuit
T/L3
ON
EMC filter
R1/L11 ON/OFF
Jumper
∗2 S1/L21 connecter
OFF
Main circuit
Earth
(Ground)
Control circuit
STF
STR
STP(STOP)
RH
High speed
RM
RL
Low speed
∗4
JOG
RT
MRS
Output stop
RES
Reset
AU
CS
power failure
SD
24V
PC
24VDC power supply
+24
supply input
SD
Voltage/current
∗5
input switch
10E(+10V)
ON
OFF
10(+5V)
2 4
3
DC0 to 5V Initial value
2
2
DC0 to 10V selectable
DC0 to 20mA
1 5
(Analog common)
DC0 to ±10V Initial value
Auxiliary (+) 1
DC0 to ±5V selectable
(-)
input
DC4 to 20mA Initial value
(+) 4
DC0 to 5V
selectable
(-)
DC0 to 10V
connector 1 connector 2
connector 3
Shorting 24V
wire
PC
S1
S2
Output shutoff
circuit
SIC
SD
page 25, and select one according to the applicable motor capacity.)
FR-A820-00770(15K) to 01250(22K),
FR-A840-00470(18.5K) to 01800(55K)
DC reactor
(FR-HEL)∗1
Brake resistor
(FR-ABR)∗7∗8
Brake unit
Jumper
R
(Option)
Earth
(Ground)
P1 P/+
Inrush
PR N/- current
limit circuit
U
V
M
W
Relay output∗10
C1
B1
Relay output 1
(Fault output)
A1
C2
B2
Relay output 2
A2
RUN
Open collector output∗11
Running
SU
Up to frequency
IPF
Instantaneous
power failure
OL
Overload
FU
Frequency detection
SE
Open collector output common
Sink/source common
PU
connector
F/C
+ -
USB A
(FM)
∗12
connector
Calibration
resistor ∗13
SD
∗5
USB
mini B
AM (+) Analog signal output
connector
(0 to ±10VDC)
5
(-)
∗5
TXD+
Data
TXD-
∗5
transmission
RXD+
Data
RXD-
reception
GND
(SG)
GND
Terminating
VCC 5V
resistor
(Permissible load current 100mA)
So
Safety monitor output
SOC
Safety monitor output common
Terminal connection diagrams
Brake resistor∗8
Brake unit
(Option)
R
∗9
P3 PR N/-
Motor
Earth (Ground)
Indicator
(Frequency meter, etc.)
Moving-coil type
1mA full-scale
RS-485 terminals
page 17.)
page 17.)
page 17.)
WIRING
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