ABB ACV 700 Frequency Converters

Electrical Performance Parameters
Power Frequency and Power Factor: Supports 50Hz or 60Hz ± 3% power frequency, which can adapt to different regional power grid frequencies. The base wave power factor reaches 0.97 – 0.99, and the total power factor theoretically maxes out at 0.93 – 0.95, which means that it has low consumption of reactive power on the grid and can effectively improve the utilisation rate of the grid.
Efficiency: Under the rated power, the efficiency is more than 98%, with remarkable energy-saving effect, which helps to reduce the cost of electricity for enterprises.

Motor connection parameters: three-phase output voltage range of 0 – 105 % UN, frequency 0 to ± 200Hz, frequency resolution of 0.01Hz, can accurately control the motor speed. Static speed control accuracy is 0.01% with pulse encoder feedback and 0.5 – 3% without feedback (only by motor rotation), but the error can be reduced by rotation compensation; dynamic speed control accuracy is 0.2 – 0.3% sec at 100% load step, and the motor can respond to the load change quickly.
Load capacity: Continuous and overload load capacity should be referred to the table in the inverter section of Chapter 10 of the manual, according to which users can choose the appropriate inverter specifications according to the actual working conditions to ensure stable operation of the equipment.
Switching Frequency: IGBT inverters have a maximum switching frequency of 3kHz, which makes the output AC closer to sinusoidal waveform and reduces motor harmonics, heat and noise; GTO inverters have a maximum switching frequency of 800Hz, which is suitable for high-power scenarios.

Weak Magnetism and Torque Parameters: Weak magnetism set point frequency range 10 – 200Hz, voltage 0 – 105%. The torque step-up time is 5-10ms at 100% torque reference step (vector control), and the motor can output the required torque quickly. Acceleration and deceleration times of 200ms – 600sec / 100Hz can be flexibly adjusted according to machine requirements.
Enclosure and protection parameters
Protection class and colour: MD enclosure protection class IP21, module protection class IP00, enclosure colour light beige (NCS 1704 – Y15R).

Environmental parameters
Temperature requirements: Ambient air temperature + 5 to + 40 °C (+ 45 °C) for stationary use, – 25 to + 55 °C for storage, – 40 to + 70 °C for transport.
Cooling and humidity: Cooling by dry clean air and built-in fan, cooling air corrosion severity up to class G1 according to ISA – S71.04. Relative humidity ≤ 95%, no condensation allowed.
Altitude: Full load operation is possible at altitude ≤ 1000m ASL, above this altitude reduced capacity may be required.

Electrical environment and safety parameters
Electrical conditions: The supply voltage is available in various sizes, e.g. UN = 400 V (380 V, 415 V) ± 10 %, UN = 500 V (440 V, 460 V) ± 10 %, UN = 690 V – 10 %, 6 % (575 V, 660 V ± 10 %) in accordance with VDE 0160 (excluding short-time overvoltage).
Safety standards: Protection class IP 21 (optional IP 41) in accordance with IEC 529, IEC 439-1, etc. for safe use of the equipment.

Power supply section

Composition and type: including connection equipment, rectification equipment, etc., according to different needs can contain a variety of units. According to the function is divided into diode power supply part, regenerative power supply part and resistance braking part, each part contains different unit combinations, applicable to different power ranges .

Introduction of each unit: the function, structure and technical parameters of each unit are introduced in detail, such as the line power supply unit is used to connect the power supply, which contains a variety of electrical equipment; the capacitor bank unit is used to smooth the DC voltage .

Drive section

Power stage type: based on IGBT or GTO power stage, different types are applicable to different power ranges; IGBT power stage is applicable to part of the lower power range, GTO power stage is applicable to the higher power range.

Structure and parameters: the main components of the inverter unit, such as IGBT module, GTO, etc.; the size, weight, overload capacity, cooling requirements and other parameters of different types of drive units are given, as well as the control principle and requirements for the use of parallel inverter units.