Mitsubishi Electric FR-A720-0.4K Specifications Page 20
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23
Type
Terminal
Symbol
Terminal Name Description
Main
circuit
R/L1, S/L2, T/L3 AC power input Connect to the commercial power supply.
U, V, W Inverter output Connect a three-phase squirrel-cage motor.
R1/L11, S1/L21
Power supply for control
circuit
Connected to the AC power supply terminals R/L1 and S/L2. To retain alarm display and
alarm output, apply external power to this terminal.
P/+, PR
Brake resistor
connection
Remove the jumper from terminals PR-PX (7.5K or less) and connect an optional brake
resistor (FR-ABR) across terminals P/+-PR. The PR terminal is provided for the 22K or
less.
P/+, N/- Brake unit connection
Connect the brake unit (FR-BU and BU, MT-BU5), power regeneration common
converter (FR-CV) or regeneration common converter (MT-RC) and high power factor
converter (FR-HC, MT-HC).
P/+, P1 DC reactor connection
For the 55K or less, remove the jumper across terminals P/+-P1 and connect a DC
reactor. (For the 75K or more, a DC reactor is supplied as standard.)
PR, PX
Built-in brake circuit
connection
When the jumper is connected across terminals PX-PR (initial status), the built-in brake
circuit is valid. The PX terminal is provided for the 7.5K or less.
Earth (Ground) For earthing (grounding) the inverter chassis. Must be earthed (grounded).
Control circuit/input signal
Contact input
STF Forward rotation start
Turn on the STF signal to start forward rotation and turn it off
to stop.
When the STF and STR
signals are turned on
simultaneously, the stop
command is given.
STR Reverse rotation start
Turn on the STR signal to start reverse rotation and turn it off
to stop.
STOP
Start self-holding
selection
Turn on the STOP signal to self-hold the start signal.
RH, RM, RL Multi-speed selection Multi-speed can be selected according to the combination of RH, RM and RL signals.
JOG
Jog mode selection
Turn on the JOG signal to select Jog operation (initial setting) and turn on the start
signal (STF or STR) to start Jog operation.
Pulse train input
JOG terminal can be used as pulse train input terminal. To use as pulse train input
terminal, the Pr.291 setting needs to be changed. (maximum input pulse: 100kpulses/s)
RT
Second function
selection
Turn on the RT signal to select second function selection
When the second function such as “Second torque boost” and “Second V/F (base
frequency)” are set, turning on the RT signal selects these functions.
MRS Output stop
Turn on the MRS signal (20ms or more) to stop the inverter output.
Use to shut off the inverter output when stopping the motor by electromagnetic brake.
RES Reset
Used to reset alarm output provided when protective function is activated. Turn on the RES
signal for more than 0.1s, then turn it off. Recover about 1s after reset is cancelled.
AU
Terminal 4 input
selection
Terminal 4 is made valid only when the AU signal is turned on.
Turning the AU signal on makes terminal 2 invalid.
PTC input
AU terminal is used as PTC input terminal (thermal protection of the motor). When using
it as PTC input terminal, set the AU/PTC switch to PTC.
CS
Selection of automatic
restart after
instantaneous power
failure
When the CS signal is left on, the inverter restarts automatically at power restoration.
Note that restart setting is necessary for this operation. In the initial setting, a restart is
disabled.
SD
Contact input common
(sink)
Common terminal for contact input terminal (sink logic) and terminal FM. Common
output terminal for 24VDC 0.1A power supply (PC terminal). Isolated from terminals 5
and SE.
PC
External transistor
common,
24VDC power supply,
contact input common
(source)
When connecting the transistor output (open collector output), such as a programmable
controller (PLC), when sink logic is selected, connect the external power supply
common for transistor output to this terminal to prevent a malfunction caused by
undesirable currents. Can be used as 24VDC 0.1A power supply. When source logic
has been selected, this terminal serves as a contact input common.
Frequency setting
10E
Frequency setting
power supply
When connecting a frequency setting potentiometer at an
initial status, connect it to terminal 10.
Change the input specifications of terminal 2 when
connecting it to terminal 10E.
10VDC, permissible load
current 10mA
10
5VDC, permissible load
current 10mA
2
Frequency setting
(voltage)
Inputting 0 to 5VDC (or 0 to 10V, 4 to 20mA) provides the maximum output frequency at
5V (10V, 20mA) and makes input and output proportional. Use Pr.73 to switch from
among input 0 to 5VDC (initial setting), 0 to 10VDC, and 4 to 20mA.
Voltage input: Input resistance 10kΩ ±1kΩ Maximum permissible voltage 20VDC
Current input: Input resistance 250Ω ±5Ω (When power is ON)
Maximum permissible current 30mA
Input resistance 10kΩ ±1kΩ (When power is OFF)
4
Frequency setting
(current)
Inputting 4 to 20mADC (or 0 to 5V, 0 to 10V) provides the maximum output frequency at
20mA and makes input and output proportional. This input signal is valid only when the
AU signal is on (terminal 2 input is invalid). Use Pr.267 to switch from among input 4 to
20mA (initial setting), 0 to 5VDC, and 0 to 10VDC.
Voltage input: Input resistance 10kΩ ±1kΩ Maximum permissible voltage 20VDC
Current input: Input resistance 250Ω ±5Ω (When power is ON)
Maximum permissible current 30mA
Input resistance 10kΩ ±1kΩ (When power is OFF)
1
Frequency setting
auxiliary
Inputting 0 to ±5VDC or 0 to ±10VDC adds this signal to terminal 2 or 4 frequency
setting signal. Use Pr.73 to switch between input 0 to ±5VDC and 0 to ±10VDC (initial
setting) input.
Input resistance 10kΩ ±1kΩ Maximum permissible voltage ±20VDC
5
Frequency setting
common
Common terminal for frequency setting signal (terminal 2, 1 or 4) and analog output terminal
AM. Do not earth (ground)
Terminal Specification Explanation
- [Highest level of inverter] 2
- 200V class 5
- 400V class 5
- Standard Specifications 6
- Common specifications 7
- Outline Dimension Drawings 8
- Inverter Type H H1 D D1 9
- (Unit: mm) 10
- FR-A720-75K, 90K 11
- FR-A740-110K, 132K 11
- DC reactor supplied 11
- Unit: mm) 11
- FR-A740-315K, 355K 13
- FR-A740-400K, 450K, 500K 14
- Heatsink protrusion procedure 16
- Panel cutting 17
- Inverter Type D1 18
- Terminal Connection Diagram 19
- Terminal 20
- Terminal Name Description 20
- Main circuit 22
- Control circuit 22
- Torque control 23
- Position control 23
- Operation Panel (FR-DU07) 24
- Operation mode switchover 25
- Monitor/frequency setting 25
- Parameter List 26
- Terminal Connection 27
- Terminal Specification 27
- Explanation 27
- , 2 1 0 67 33
- , 9999 1 9999 67 33
- *2 9999 55 36
- 73 38
- 0, 46, 112 39
- 1, 2, 18 39
- 3, 19, 47, 113 39
- 4 to 6, 24 to 27, 232 to 239 39
- 10 to 12, 802, 850 40
- 24 to 27 42
- Output frequency (Hz) 43
- Output frequency 43
- 31 to 36 44
- 37, 144, 505, 811 44
- 41 to 43, 50, 116, 865 44
- 55, 56, 866 45
- 57, 58, 162 to 165, 299, 611 46
- 61 to 64, 292, 293 47
- 65, 67 to 69 48
- Analog input selection 49
- 73, 242, 243, 252, 253, 267 49
- 74, 822, 826, 832, 836, 849 49
- Frequency 50
- Operation mode selection 51
- 100 equals the 53
- Modbus-RTU protocol 54
- 127 to 134, 575 to 577 55
- 135 to 139, 159 55
- 150 to 153, 166, 167 55
- 160, 172 to 174 56
- 178 to 189 57
- 190 to 196 57
- 245 to 247 58
- 251, 872 58
- 255 to 259 58
- ≠ "9999") 59
- 270 to 274, 4, 5 60
- Stop-on contact control 60
- 270, 275, 276, 6 60
- Brake sequence function 61
- 278 to 285, 292 61
- 285, 853 61
- 286 to 288 62
- 291, 384 to 386 62
- 338, 339, 550, 551 62
- 359, 367 to 369 63
- 419, 464 to 494 64
- 419, 428 to 430 64
- 420, 421, 424 64
- 804 to 806 66
- 807 to 809 66
- 818, 819 66
- 840 to 848 68
- 858, 868 68
- 862, 863 69
- 882 to 886, 665 69
- 888, 889 70
- 892 to 899 70
- C0(900), C1(901) 70
- 989, CL, ALLC, Er.CL, PCPY 71
- Protective Functions 72
- Major failures 73
- Option and Peripheral Devices 74
- Stand-alone Shared 75
- Stand-alone Option 76
- Less than D 76
- Braking torque 78
- Brake unit selection table 79
- Inverter 80
- Brake unit 80
- Recommended cable size 82
- Cable Clamp MS3057-12A 83
- MCCB INV 84
- × (Ig1+Ign+lgi+Ig2+Igm) 85
- ≥ Ig × 10) 85
- Safety Precautions 86
- 0.4K 0.75K 88
- 1.5K or 88
- Leakage currents 89
- Application to Motor 90
- Output torque 91
- Motor type 92
- Dedicated motor model lineup 92
- Motor specification 93
- Dimensions table (Unit: mm) 94
- (1500r/min series) 94
- Section BB 96
- Section B 97
- (1500r/min series) 99
- Item FR-A500(L) FR-A700 101
- Warranty 102
- International FA center 103
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