Mitsubishi Inverter Freqrol A701 Variable Frequency Drives
The A701 offers most of the features and function found in the standard A700 Series but includes built-in line regeneration that allows 100% continuous braking torque. The A701 is ideal for applications with overhauling loads or rapid start/stop cycles such as escalators, lifts & hoists and centrifuges. Other opportunities are simply customers who want to remove the problems associated with brake resistors and the heat they produce or to simplify wiring and reduce required panel space. By taking the regenerative energy from the motor and returning it to the AC line instead of transforming it into heat through a resistor, increased energy savings and improved return on investment is assured.
A701 Series Feature
Vector VFD with built-in Line Regeneration.
- Ideal for applications with continuous overhauling or large inertia loads
- Capacity up to 75HP for 240V and 480V applications
- Braking Torque
- 100% continuous
- 150% for up to 60 sec.
- Vector mode with encoder allows Speed, Torque and Position control
- Real Sensorless mode allows Speed and Torque control without encoder
- Starting torque of 150% at 0.3Hz
- 2 serial ports (RS485) and 1 USB port
- 3 option ports for plug-in network or function expansion options
- 12 programmable digital inputs (sink/source selectable)
- 5 programmable digital outputs (sink/source selectable)
- 2 form C relays
- 3 analog inputs
- Terminal 2 (0~5VDC, 0~10VDC, 0~20mA selectable)
- Terminal 1 (0 to +/-5VDC or 0 to ±10VDC selectable)
- Terminal 4 (0~5VDC, 0~10VDC, 4~20mA selectable)
- 2 analog outputs (0~10VDC and pulse train out)
- Modbus RTU and Mitsubishi VFD serial protocol communications
- UL and cUL listed. CE marked (480V version only)
A701 General Specifications
| Operation Specifications | Control Method | Soft-PWM control/high carrier frequency PWM control (selectable from among V/F control, advanced magnetic flux vector control and
real sensorless vector control) / vector control (*1) |
|
| Output Frequency Range | 0.2 to 400Hz (The maximum frequency is 120Hz under real sensorless vector control and vector control.) (*1) | ||
| Frequency Setting Resolution | Analog Input | 0.015Hz/0 to 60Hz (terminal 2, 4: 0 to 10V/12bit); 0.03Hz/0 to 60Hz (terminal 2, 4: 0 to 5V/11bit, 0 to 20mA/about 11bit, terminal 1: 0 to ±10V/12bit)
0.06Hz/0 to 60Hz (terminal 1: 0 to ±5V/11bit) |
|
| Digital Input | 0.01Hz | ||
| Frequency Accuracy | Analog Input | Within ±0.2% of the max. output frequency (25°C ±10°C) | |
| Digital Input | Within 0.01% of the set output frequency | ||
| Voltage / Frequency Characteristics | Base frequency can be set from 0 to 400Hz Constant torque/variable torque pattern or adjustable 5 points V/F can be selected | ||
| Starting Torque | 150% 0.3Hz (under real sensorless vector control or vector control) (*1) | ||
| Torque Boost | Manual torque boost | ||
| Acceleration / Deceleration Time Setting |
0 to 3600s (acceleration and deceleration can be set individually), linear or S-pattern acceleration/deceleration mode, backlash
measures acceleration/deceleration can be selected. |
||
| DC Injection Brake | Operation frequency (0 to 120Hz), operation time (0 to 10s), operation voltage (0 to 30%) variable | ||
| Stall Prevention Operation Level | Operation current level can be set (0 to 220% adjustable), whether to use the function or not can be selected | ||
| Torque Limit Level | Torque limit value can be set (0 to 400% variable) | ||
| Frequency Setting Signal | Analog Input | Terminal 2, 4: 0 to 10V, 0 to 5V, 4 to 20mA (0 to 20mA) can be selected • Terminal 1: -10 to +10V, -5 to +5V can be selected | |
| Digital Input | Input using the setting dial of the operation panel or parameter unit; Four-digit BCD or 16 bit binary (when used with option FR-A7AX) | ||
| Start Signal | Forward and reverse rotation or start signal automatic self-holding input (3-wire input) can be selected. | ||
| Input Signal | You can select any twelve signals using Pr. 178 to Pr. 189 (input terminal function selection) from among multi speed selection, remote setting, stop-on-contact, second function selection, third function selection, terminal 4 input selection, JOG operation selection, selection of automatic restart after instantaneous power failure, flying start, external thermal relay input, PU operation/external inter lock signal , external DC injection brake operation start, PID control enable terminal, brake opening completion signal, PU operation/external operation switchover, load pattern selection forward rotation reverse rotation boost, V/F switching, load torque high-speed frequency, S-pattern acceleration/deceleration C switchover, pre-excitation, output stop, start self-holding selection, control mode changing, torque limit selection, start-time tuning start external input, torque bias selection 1, 2 (*1), P/PI control switchover, forward rotation command, reverse rotation command, inverter reset, PTC thermistor input, PID forward reverse operation switchover, PU-NET operation switchover, NET-external operation switchover, and command source switchover, conditional position pulse train sign (*1), conditional position droop pulse clear (*1), magnetic flux decay output shutoff. | ||
| Pulse Train Input | 100kpps | ||
| Operational Functions | 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), motor end orientation (*1), pre-excitation, notch filter, easy gain tuning, speed feed forward, and torque bias (*1) | ||
| Output Signals | Operating Status | You can select any signals using Pr. 190 to Pr. 196 (output terminal function selection) from among inverter running, up-to-frequency, instantaneous power failure/undervoltage, overload warning, output frequency (speed) detection, second output frequency (speed) detection, third output frequency (speed) detection, electronic thermal relay function pre-alarm, PU operation mode, inverter operation ready, output current detection, zero current detection, PID lower limit, PID upper limit, PID forward rotation reverse rotation output, electronic bypass MC1, electronic bypass MC2, electronic bypass MC3, orientation complete (*1), brake opening request, fan fault output, heatsink overheat pre-alarm , inverter running/start command on, deceleration at an instantaneous power failure, PID control activated, during retry, PID output interruption, life alarm, fault output 1, 2, 3 (power-off signal), power savings average value update timing, current average monitor, maintenance timer alarm, remote output, forward rotation output (*1), reverse rotation output (*1), low speed output, torque detection, regenerative status output (*1), start-time tuning completion, in-position completion (*1), alarm output and fault output. Open collector output (5 points), relay output (2 points) and alarm code of the inverter can be output (4 bit) from the open collector. | |
| When used with the FR-A7AY, FR-A7AR (optional) | In addition to the above, you can select any signals using Pr. 313 to Pr. 319 (extension output terminal function selection) from among control circuit capacitor life, main circuit capacitor life, cooling fan life, inrush current limit circuit life. (only positive logic can be set for extension terminals of the FR-A7AR) | ||
| Pulse Train Input | 500kpps | ||
| Pulse / Analog Output | Select any signals using Pr. 54 FM terminal function selection (pulse train output) and Pr. 158 AM terminal function selection (analog output) from among output frequency, motor current (steady or peak value), output voltage, frequency setting, operation speed, motor torque, converter output voltage (steady or peak value), electronic thermal relay function load factor, input power, output power, load meter, motor excitation current, reference voltage output, motor load factor, power saving effect, PID set point, PID measured value, motor output, torque command, torque current command, and torque monitor. | ||
| Indication | PU (FR-DU07 / FR-PU07 / FR-PU04) |
Operating Status | Output frequency, motor current (steady or peak value), output voltage, frequency setting, running speed, motor torque, overload, converter output voltage (steady or peak value), electronic thermal relay function load factor, input power, output power, load meter, motor excitation current, cumulative energization time, actual operation time, motor load factor, cumulative power, energy saving effect, cumulative saving power, PID set point, PID measured value, PID deviation, inverter I/O terminal monitor, input terminal option monitor (*2), output terminal option monitor (*2), option fitting status (*3), terminal assignment status (*3), torque command, torque current command, feed back pulse (*1),motor output |
| Fault Definition | Fault definition is displayed during the fault occurs, the output voltage/current/frequency/cumulative energization time right before the
fault occurs and past 8 fault definitions are stored. |
||
| Interactive Guidance | Operation guide/trouble shooting with a help function (*3) | ||
| Protective / Warning Function | 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, input phase failure, motor overload, output side earth (ground) fault overcurrent, output short circuit, main circuit element overheat, output phase failure, external thermal relay operation (*5), PTC thermistor operation (*5), option alarm, parameter error, PU disconnection, retry count excess (*5), CPU alarm, operation panel power supply short circuit, 24VDC power output short circuit, output current detection value excess (*5), inrush current limit circuit alarm, communication alarm (inverter), opposite rotation deceleration error*5, analog input error, fan fault, overcurrent stall prevention, overvoltage stall prevention, electronic thermal relay function prealarm, PU stop, maintenance timer alarm (*2) (*5), parameter write error, copy operation error, operation panel lock, parameter copy alarm, speed limit indication, signal loss detection (*1) (*5), speed deviation large (*1) (*5), overspeed (*1) (*5), excessive position error (*1) (*5), brake sequence error (*5), encoder phase error (*1) (*5), regeneration converter overcurrent, regeneration converter circuit fault, regeneration converter transistor protection thermal | ||
| Environment | Ambient Temperature | -10°C to +50°C (non-freezing) | |
| Ambient Humidity | 90%RH maximum (non-condensing) | ||
| Storage Temperature (*4) | -20°C to +65°C | ||
| Atmosphere | Indoors (without corrosive gas, flammable gas, oil mist, dust and dirt etc.) | ||
| Altitude / Vibration | Maximum 1000m above sea level, 5.9m/s2 or less | ||
A701 Ratings
| Rating (CT & VT) | IP00 Open Chassis Model Number | Dimensions in inches (mm) | Weight Lbs (kg) | Stocked Item | |||
| HP | Rated Amps | Height | Width | Depth | |||
| 3-Phase 200~240VAC Input & Output | |||||||
| 7 1/2 | 24 | FR-A721-5.5K | 18.5 (470) | 9.9 (250) | 10.7 (270) | 44.1 (20) | – |
| 10 | 33 | FR-A721-7.5K | 18.5 (470) | 9.9 (250) | 10.7 (270) | 48.5 (22) | – |
| 15 | 46 | FR-A721-11K | 21.6 (540) | 11.9 (300) | 11.6 (294) | 72.7 (33) | – |
| 20 | 61 | FR-A721-15K | 21.6 (540) | 11.9 (300) | 11.6 (294) | 77.1 (35) | – |
| 25 | 76 | FR-A721-18.5K | 23.7 (600) | 15.4 (390) | 12.6 (320) | 110.2 (50) | – |
| 30 | 90 | FR-A721-22K | 23.7 (600) | 15.4 (390) | 12.6 (320) | 114.6 (52) | – |
| 40 | 115 | FR-A721-30K | 27.6 (700) | 17.8 (450) | 13.4 (340) | 152.0 (69) | – |
| 50 | 145 | FR-A721-37K | 27.6 (700) | 18.5 (470) | 14.5 (368) | 191.7 (87) | – |
| 60 | 175 | FR-A721-45K | 27.6 (700) | 18.5 (470) | 14.5 (368) | 198.3 (90) | – |
| 75 | 215 | FR-A721-55K | 35.5 (900) | 23.7 (600) | 16.0 (405) | 264.4 (120) | – |
| 3-Phase 380~480VAC Input & Output | |||||||
| 7 1/2 | 12 | FR-A741-5.5K | 18.5 (470) | 9.9 (250) | 10.7 (270) | 55.1 (25) | – |
| 10 | 17 | FR-A741-7.5K | 18.5 (470) | 9.9 (250) | 10.7 (270) | 57.3 (26) | – |
| 15 | 23 | FR-A741-11K | 21.6 (540) | 11.9 (300) | 11.6 (294) | 81.5 (37) | – |
| 20 | 31 | FR-A741-15K | 21.6 (540) | 11.9 (300) | 11.6 (294) | 88.1 (40) | – |
| 25 | 38 | FR-A741-18.5K | 23.7 (600) | 14.2 (360) | 12.6 (320) | 105.8 (48) | – |
| 30 | 44 | FR-A741-22K | 23.7 (600) | 14.2 (360) | 12.6 (320) | 108.0 (49) | – |
| 40 | 57 | FR-A741-30K | 27.6 (700) | 17.8 (450) | 13.4 (340) | 143.2 (65) | – |
| 50 | 71 | FR-A741-37K | 27.6 (700) | 18.5 (470) | 14.5 (368) | 176.3 (80) | – |
| 60 | 86 | FR-A741-45K | 27.6 (700) | 18.5 (470) | 14.5 (368) | 182.9 (83) | – |
| 75 | 110 | FR-A741-55K | 35.5 (900) | 23.7 (600) | 16.0 (405) | 253.3 (115) | – |
