Mitsubishi Electric

Variable Speed/Frequency Drive (VSD/VFD) / Inverter

FREQROL FR-A701 series

(Supply input) 50/60 Hz
(output) 0.2-400 Hz

Variable Speed/Frequency Drive (VSD/VFD) / Inverter
Soft-PWM control
High carrier frequency PWM control
Maximum/minimum frequency setting
Frequency jump operation
External thermal relay input selection
Polarity reversible operation
Automatic restart after instantaneous power failure operation
Electronic bypass operation
Forward/reverse rotation prevention
Remote setting
Brake sequence
Second function
Third function
Multi-speed operation
Original operation continuation at instantaneous power failure
Stop-on-contact control
Load torque high-speed frequency control
Droop control
Regeneration avoidance
Slip compensation
Operation mode selection
Offline auto tuning function
Online auto tuning function
PID control
Computer link operation (RS-485)
Pre-excitation
Notch filter
Easy gain tuning
Speed feed forward

regenerative brk.
Forced air cooling

200Vac-240Vac
(220Vac / 230Vac)

3-phase/3P

145A
150% In for 60s / 200% In for 3s overload current rating (inverse-time characteristics; Normal duty; 50°C ambient air temperature)
110% In for 60s / 120% In for 3s overload current rating (inverse-time characteristics; Super light duty; 40°C ambient air temperature)
120% In for 60s / 150% In for 3s overload current rating (inverse-time characteristics; Light duty; 50°C ambient air temperature)
200% In for 60s / 250% In for 3s overload current rating (inverse-time characteristics; Heavy duty; 50°C ambient air temperature)

37kW

50HP

Overcurrent during acceleration
Overcurrent during constant speed
Overcurrent during deceleration
Overvoltage during acceleration
Overvoltage during constant speed
Overvoltage during deceleration
Inverter protection thermal operation
Motor protection thermal operation
Heatsink overheat
Instantaneous power failure occurrence
Undervoltage
Motor overload
Output side earth (ground) fault overcurrent
Output short-circuit
Main circuit element overheat
Output phase loss
Option fault
Parameter error
PU disconnection
CPU fault
Operation panel power supply short circuit
24Vdc power output short-circuit
Inrush current limit circuit fault
Communication fault (inverter)
USB fault
Analog input fault
Regeneration converter overcurrent
Regeneration converter circuit fault
Regeneration converter transistor protection thermal
Internal circuit fault
Power supply fault
Input phase loss (not available in initial status)
External thermal relay operation
PTC thermistor operation
Retry count excess
Output current detection value excess
Opposite rotation deceleration fault
Brake sequence fault

Modbus RTU

1 x digital input (source/sink) (STF)
1 x digital input (source/sink) (STR)
1 x digital input (source/sink) (STOP)
1 x digital input (source/sink) (RH)
1 x digital input (source/sink) (RM)
1 x digital input (source/sink) (RL)
1 x digital input (source/sink) (JOG)
1 x digital input (source/sink) (RT)
1 x digital input (source/sink) (MRS)
1 x digital input (source/sink) (RES)
1 x digital input (source/sink) (AU)
1 x digital input (source/sink) (CS)

1 x digital output (SPDT (Single Pole Double Throw contact A1/B1/C1) (programmable)
1 x digital output (SPDT Single Pole Double Throw contact A2/B2/C2) (programmable)
1 x digital output (sink/source open collector transistor) (RUN; programmable)
1 x digital output (sink/source open collector transistor) (SU; programmable)
1 x digital output (sink/source open collector transistor) (IPF; programmable)
1 x digital output (sink/source open collector transistor) (OL; programmable)
1 x digital output (sink/source open collector transistor) (FU; programmable)

1 x analog input (0-5Vdc / 0-10Vdc / 0-20mA)
1 x analog input (0-5Vdc / 0-10Vdc)
1 x analog input (0-5Vdc / 0-10Vdc / 4-20mA)

1 x analog output (0-10Vdc)

IP00

Lift

FR-A721-37K

Commercialized

FRA72137K

UL
cUL
CE