Double frequency conversion wire drawing machine transformation plan (2)

Product introduction: INVT-CHV130 special inverter

INVT-CHV130 special-purpose inverter is developed on the basis of the hardware platform and core control algorithm of INVT-CHV100 high-performance vector inverter, combined with the requirements of double-conversion medium-sized, small and micro wire drawing machine control. Inverter of frequency conversion control wire drawing machine, in order to meet the requirements of industrial application, has done a lot of special treatment in hardware, software algorithm and structure, especially for high temperature, metal dust, moisture proof, anti-corrosion treatment, etc., greatly enhanced The reliability of the frequency converter in the wire drawing machine industry.

1, current vector control

INVT-CHV130 special-purpose inverter adopts ARM (32-bit) + DSP (16-bit) dual-CPU control system, and the function control and performance control are completely separated. The bottom-level high-performance motor control module adopts current vector control algorithm, that is, the stator current is in accordance with the coordinates. The change is decomposed into the excitation current component and the torque current component, and respectively controlled to achieve high-precision control of the torque.



Compared with V/F control, the advantage of vector control

(1) Excellent low frequency torque characteristics

(2) Good dynamic response characteristics, can quickly respond to load changes

(3) High speed control accuracy, high precision synchronization control

(4) It can perform direct torque control, without PG feedback torque control with high precision and low cost tension control

2, the main technology

◆Output frequency range: 0.00～600.00Hz;

◆Speed ​​control mode: SVC, VC, V/F control, torque control;

â—† Command channel mode: operation panel, terminal control, remote communication control;

â—†Frequency given mode: digital keyboard given, analog quantity given (current, voltage signal), pulse frequency given, remote communication given, PID closed loop reference, etc. It can realize the mutual switching of a given combination and a given mode, which is convenient for on-site debugging and complex process requirements;

â—† Large starting torque: 0.5Hz/150% (SVC), 0Hz/180% (VC);

â—†Overload capability: 150% rated current 60s; 180% rated current 10s;

◆ Speed ​​ratio: SVC: 1:100, VC: 1:1000;

â—† Carrier frequency range: 1.0K ~ 16.0KHz; can be automatically adjusted according to temperature and load characteristics;

◆Speed ​​control accuracy: ±0.5% maximum speed (SVC); ±0.1% maximum speed (VC);

â—†Automatic voltage adjustment (AVR): When the grid voltage changes, it can automatically keep the output voltage constant;

â—†Torque control: Various torque command setting modes can realize torque control with PG and no PG;

â—†High-speed pulse input function: can realize fixed length control;

â—† Shutdown processing: stop brake brake output function;

â—†Disconnection fault detection function: provide digital signal detection and analog signal detection mode;

â—† Provide two sets of PID parameters: PID control can be automatically adjusted according to line speed, radius and running frequency;

â—†Display function: It can display the drawing length, drawing wire speed and wide display range;

â—† Fixed length automatic parking: fixed length automatic parking function;

â—† Design PID adjustment limit function: realize synchronous start and stop of synchronous control system;

â—† Synchronous speed gain: convenient for debugging of synchronous control;

â—†Configure the diameter calculation function: realize high-precision tension winding control;

â—†Rolling diameter reset function: The spool diameter can be reset through the terminal;

â—† Cable motor control function: with FDT frequency detection

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