Mitsubishi Inverter FR-A840 series  FR-A840-37K-1

Manufacturer: MITSUBISHI
Origin: Japan
Status: Contact us
Price: Contact us

Serie: Mitsubishi Inverter FR-A840 series

Model: FR-A840-37K-1



FR-A840 inverter is designed suitable for all machines, cranes, conveyors, presses, extruders, printers, woodworking machines, compressors, machine tools need high precision .. .

Power supply

AC 3P 400V, 60Hz

Rated capacity


Rated current

0.8-962A (400V)

Output frequency range


Starting Torque

SLD Rating:120% 0.3 Hz, LD Rating:150% 0.3 Hz, ND Rating:200% 0.3 Hz, HD Rating:250% 0.3 Hz (Real sensorless vector control, vector control)

Overload current rating

ND Rating: 150 % of rated output current for 60 s, HD Rating: 200 % of rated output current for 60 s (Derating may be required for repetitive loads )

Control Method

Soft-PWM control, high carrier frequency PWM control (selectable among V/F control, Advanced magnetic flux vector control, Real sensorless vector control, Optimum excitation control), vector control, and PM sensorless vector control

Braking unit



Multi-Function Digital Input


Rated capacity, Rated current, Overload current rating, Rated voltage, Regenerative braking

Connection  FM

Protection Function

Input phase loss protection selection, Speed limit, OLT level setting, Fault definition

Overcurrent trip during acceleration, Overcurrent trip during constant speed, Overcurrent trip during deceleration or stop, Regenerative overvoltage trip during acceleration, Regenerative overvoltage trip during constant speed, Regenerative overvoltage trip during deceleration or stop, Inverter overload trip, Motor overload trip, Heatsink overheat

Main Control Functions

Maximum and minimum frequency settings, multi-speed operation, acceleration/deceleration pattern, thermal protection,DC injection brake, starting frequency, JOG operation, output stop (MRS), stall prevention, regeneration avoidance, increased magnetic excitation deceleration,rotation display, automatic restart after instantaneous power failure, electronic bypass sequence, remote setting, automatic acceleration/deceleration, intelligent mode, retry function, carrier frequency selection, fast-response current limit, forward/reverse rotation prevention, operation mode selection, slip compensation, droop control, load torque high-speed frequency control, speed smoothing control, traverse, auto tuning, applied motor selection, gain tuning, RS-485 communication, PID control, PID pre-charge function, easy dancer control, cooling fan operation selection, stop selection (deceleration stop/coasting),speed control, torque control, position control, pre-excitation, torque limit, test run, 24 V power supply input for control circuit, safety stop function, swinging suppression control


Ethernet, CC-Link, CC-Link/LT, SSCNETⅢ, CANopen, J1939, RS-232C, RS-422, RS-485, MODBUS

Peripheral Devices and Options

Plug-in Type: Vector control,Orientation/encoder, 16-bit digital input, Digital output Extension analog output, Relay output, CC-Link communication, DeviceNet communication, PROFIBUS-DP communication

Stand-alone Shared: Cable for encoder Mitsubishi vector control dedicated motor (SF-V5RU),Control circuit terminal block intercompatibility attachment, Intercompatibility attachment, AC reactor, DC reactor, Line noise filter, High-duty brake resistor

Degree of protection

IP00 (open type), IP20( enclose type)


Document of Mitsubishi Inverter FR-A840 series

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