Open-loop Vector Inverter
The 860S 450–750KW floor-standing current vector inverter with base is an upgraded, thickened, integrated load-bearing and vibration-damping metal floor-standing base based on the standard 450–560kW circuit control architecture. Its structure is optimized for independent ground installation and ultra-large integrated electrical control station scenarios. The entire unit adopts a dual-layer, dual-channel air-cooling system.…
The 860S 450–750KW floor-standing current vector inverter with base is an upgraded, thickened, integrated load-bearing and vibration-damping metal floor-standing base based on the standard 450–560kW circuit control architecture. Its structure is optimized for independent ground installation and ultra-large integrated electrical control station scenarios. The entire unit adopts a dual-layer, dual-channel air-cooling system. The ultra-high-power vector main control ensures low-speed, heavy-load, and high-precision speed control. All process control functions are fully retained. The base integrates three optimized designs: vibration damping, stable load-bearing, and standardized wiring channels, significantly reducing the interference of high-power equipment vibration on surrounding electrical components. It comes standard with RS485 industrial communication, an external ultra-high-power independent braking unit, and expansion card slots compatible with a full range of IO, bus, and encoder expansion cards, adapting to the independent floor-standing installation needs of heavy equipment in metallurgy, mining, and large ports.
1. Exclusive design of integrated shock-absorbing floor base
The thickened sheet metal one-piece load-bearing base has a built-in multi-layer shock absorption and buffer structure, which effectively reduces the transmission of vibration during the operation of ultra-high power equipment; the base is reserved with standardized grounding bar and cable layered wiring space, eliminating the need for additional installation steel frame and greatly shortening the processing cycle of large electrical control sets; the base is integrated with the air duct of the whole machine, improving the bottom air intake heat dissipation efficiency and providing better temperature rise control during long-term full-load operation.
2. High-performance vector drive for ultra-high load capacity
Sensorless SVC outputs 150% of rated starting torque at 0.25Hz; closed-loop FVC achieves speed stability as low as ±0.02%; torque control error ≤±3%; dynamic slip compensation offsets speed drift under heavy loads; instantaneous power failure and short-term backup ensure continuous production line operation; 150% rated current for 60s overload output perfectly adapts to the starting impact load of heavy equipment; AVR automatic voltage regulation resists large fluctuations in industrial power grid voltage.
3. Complete integrated automated process control unit
Built-in programmable logic unit supports 16-speed fully automatic cyclic operation; 10 types of main and auxiliary frequency sources can be freely superimposed and switched, with a maximum high-speed pulse input and output of 100kHz; oscillation frequency, meter counting, constant tension/constant pressure PID closed loop can be directly adapted to wide-width film, large-scale wire drawing, and textile complete production lines; 5-digit digital tube operation panel can be customized to display all operating parameters such as voltage, current, torque, and speed, and local debugging operation is intuitive and convenient.
4. Massive system expansion and comprehensive protection
The entire unit features multi-level hardware protection against phase loss, short circuit, overvoltage, overcurrent, overtemperature, and overload; two-stage frequency hopping avoids large mechanical resonance; multiple isolated digital and analog terminals; high-speed pulse acquisition; and multiple sets of high-power relay alarm outputs; various industrial buses, multi-channel IO, and full-specification PG encoder expansion cards are optional, supporting centralized remote monitoring and batch parameter debugging of dozens of frequency converters in a network.
| Item | Specification | |
| Control characteristics | Output frequency | 0 – 500HZ |
| Carrier frequency | 0.8kHz ~ 12kHz. The carrier frequency can be automatically adjusted according to the load characteristics. | |
| Output frequency resolution | Digital setting: 0.01Hz | |
| Analog setting: Maximum frequency × 0.025% | ||
| Control mode | Open – loop vector control (SVC) V/F control Closed – loop vector control (FVC) |
|
| Torque characteristics | With torque compensation and slip compensation, the starting torque can reach 150% at 0.25Hz (SVC) | |
| Torque control accuracy | SVC: Above 5Hz ± 5% FVC: ± 3% | |
| Over-voltage and over-current stall prevention protection | Automatically limit the voltage and current during use to prevent frequent over – voltage and over – current tripping | |
| Speed regulation range | 1:200 (SVC) 1:1000 (FVC) | |
| Speed stabilization accuracy | ±0.5% (SVC) ±0.02% (FVC) | |
| Overload capacity | 150% of the rated output current for one minute | |
| V/F curve | Four modes: linear; multi – point; complete V/f separation; incomplete V/f separation | |
| Acceleration and deceleration curve | Linear or S – curve acceleration and deceleration modes; four acceleration and deceleration times; acceleration and deceleration time range 0.1 ~ 6500.0s |
|
| DC braking | DC braking frequency: 0.00Hz ~ maximum frequency. Braking time: 0.0s ~ 36.0s, braking action current value: 0.0% ~ 100.0% | |
| Jog control | Jog frequency range: 0.00Hz ~ maximum frequency; jog acceleration and deceleration time 0.1s ~ 6500.0s | |
| Simple PLC, multi-step speed operation | Up to 16 – step speed operation can be achieved through the built – in PLC or control terminals | |
| Built – in PID | It can easily realize the process – control closed – loop control system | |
| Automatic voltage regulation (AVR) | When the grid voltage changes, it can automatically maintain a constant output voltage | |
| Fast current – limiting function | Minimize over – current faults to the greatest extent and protect the normal operation of the frequency converter | |
| Operating characteristics | Operating command channel | Three channels: given by the operation panel, given by the control terminals, given by the serial communication port. It can be switched in various ways |
| Frequency source | Ten frequency sources: given by panel knob, given by operation panel, given by analog voltage, given by analog current, given by RS485 communication, multi – speed, PID, simple PLC, which can be switched in various ways | |
| Auxiliary frequency source | Ten auxiliary frequency sources. It can flexibly achieve auxiliary frequency fine – tuning and frequency synthesis | |
| Input terminals | Five digital input terminals, one of which can be used as a high – speed pulse input. Two analog input channels, AI1: input range 0 ~ +10V, AI2: input range 0 ~ +10V/0 – 20mA |
|
| Output terminals | One high – speed pulse output terminal, capable of outputting a square – wave signal from 0kHz ~ 50kHz, which can realize the output of physical quantities such as set frequency and output frequency. It can be selected as open – drain type One digital output terminal One relay output terminal Two analog output terminals: 0V ~ 10V/0 – 20mA, which can indicate the output of output frequency/current/voltage/frequency command/rotational speed/power factor signals |
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| Display and keyboard operation | LED display | It is equipped with 8 function keys, a 5 – digit 7 – segment LED, and 5 status LED indicators It can perform forward rotation, reverse rotation, reset, stop, jog, as well as parameter setting and display |
| Protectioncharacteristics | Protection function | Motor short – circuit detection upon power – on, input and output phase – loss protection, over – current protection, over – voltage protection, under – voltage protection, over – heat protection, overload protection, short – circuit protection, etc |
| Othercharacteristics | Optional card | IO expansion card, communication card (isolated type), PG card |
| Multi – encoder support | Supports differential, open – drain, UVW, resolver | |
| Environment | Application place | Indoors, not directly exposed to sunlight, free from dust, corrosive gases, flammable gases, oil mist, water vapor, dripping water or salt, etc |
| Altitude | Less than 1000m | |
| Ambient humidity | – 10℃ ~ + 40℃ (When the ambient temperature is between 40℃ ~ 50℃, derating operation is required) | |
| Humidity | Less than 95%RH, without water droplet condensation | |
| Vibration | Less than 5.9m/s² (0.6g) | |
| Storage temperature | – 20℃ ~ + 60℃ |
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