1. The composition and working principle of the fully automatic industrial washing machine
Fully automatic industrial washing machine refers to a large-capacity washing machine that has functions of initial washing, washing, rinsing, bleaching and dehydration, and can automatically switch between the functions without manual operation. The washing machine can be divided into three types: suspension vibration isolation type, water injection balance vibration isolation type, and gravity fixed type according to different methods of vibration reduction and vibration isolation. Currently, the mainstream products on the market are suspension type vibration isolation automatic industrial washing machines. It is mainly composed of shell, frame panel, inner drum of main shaft, transmission system, vibration isolation system, front door parts, charging parts, brake parts, water discharge valve parts, super vibration parts, control parts, pipeline parts and pneumatic system.
2. Transmission system of fully automatic industrial washing machine
The transmission system is an extremely important part of the industrial washing machine, because it mainly provides power support for the washing machine and participates in the entire washing process. The transmission system is composed of a motor and various speed-changing mechanisms. Nowadays, frequency converters are mainly used, so its component parts are significantly simplified. Generally, it is composed of frequency converters, frequency conversion motors, pulleys and transmission belts. And during the entire washing stage, with the frequency converter's automatic frequency adjustment, a constant torque transmission (stepless speed regulation) of the device without impact and intermediate transition (gearbox, transmission, coupling, clutch, etc.) is realized, so that The energy consumption of the washing process has been significantly reduced.
The frequency converter meets the technical difficulties of industrial washing machines such as high starting torque, multi-speed, wide voltage range, automatic slip compensation and fast and powerful communication methods due to its unparalleled performance and absolute excellent price-performance advantages. And stable performance, can adapt to various complex high temperature and high humidity environment. The scientific custom V / F curve is adopted to make the washing machine start smoothly, the current is reduced, and the operation is stable during the use of the customer, which is very popular among customers.
Among them, Shenzhen Xinkerui Electric Technology Co., Ltd. C500 series inverters are very suitable for industrial washing machines of various power levels. They have beautiful appearance and outstanding quality, and can widely meet the needs of various customers.
3. Electrical wiring diagram of drive system and parameter setting of inverter
The power supply of industrial washing machines is mainly three-phase 380AC, and the wiring of the electrical and control system is as follows:
In the above figure, X1 / C0M and X2 / C0M are the inverter start-stop and forward / reverse switching terminals respectively. When only X1 and C0M are closed, the inverter runs forward; when only X2 and C0M are closed, the inverter reverses Turn to run. If X1 and X2 are disconnected from C0M or X2 and C0M are closed at the same time, the inverter will be in the stop state.
Terminals X1 ～ X7 are digital signal ports, and the common terminal is unified as C0M, that is, it is effective to close and communicate with C0M. Among them, the X3, X4, X5 terminals are the three multi-speed terminals set by the inverter by default, which can correspond to the three washing programs of uniform washing, medium off and high off of the industrial washing machine. The X6 and X7 terminals are defined as the acceleration and deceleration time selection terminal, which can conveniently select the 4 different acceleration and deceleration times defined by the inverter to scientifically and effectively determine the different acceleration and deceleration time of the industrial washing machine. So as to achieve the most ideal washing effect and significantly reduce the mechanical impact, so that the washing machine always works in an optimal state.
L1, L2, L3 are three-phase input, U, V, W are three-phase output of inverter. T1A / T1B / T1C are inverter relay output terminals, among which T1B / T1C are normally closed ports and T1A / T1C are normally open ports. According to the actual electrical design and control needs, customers can choose the normally closed or normally open port as the alarm output. (+), PB is the external braking resistor port of the inverter, which is used to install braking resistors of various power levels matching the inverter's power level. Note: the built-in braking unit below 18.5KW.
The main function parameter settings of the inverter of the automatic industrial washing machine are as follows:
Function code setting value parameter setting description
F0-011 Run command channel is controlled by external terminal
F0-025 Multi-stage speed setting
F0-069.0 digital setting frequency is 9.0Hz
F0-07130.0 The maximum set frequency of the inverter is 130Hz
F0-08130.0 The maximum frequency limit of the inverter is 130Hz
F0-1110 acceleration time 1 duration is 10S
The duration of F0-1210 deceleration time 1 is 10S
F5-011X1 terminal is set to run forward
F5-022X2 terminal is set to run in reverse
F5-0313X3 terminal is set to multi-speed control 1
F5-0414X4 terminal is set to multi-speed control 2
F5-0515X5 terminal is set to multi-speed control 3
F5-0617X6 terminal is set to acceleration and deceleration time selection 1
F5-0718X7 terminal is set to acceleration and deceleration time selection 2
F5-001 two-wire type 2
F6-044 Relay output selection (T1A, T1B, T1C) is set to inverter fault
Set to inverter fault
F8-0020 acceleration time 2 duration is 20S
F8-0120 Deceleration time 2 Duration is 20S
F8-0225 acceleration time 3 duration is 25S
F8-0325 Deceleration time 3 Duration is 25S
F8-0415 acceleration time 4 duration is 15S
F8-0515 Deceleration time 4 Duration is 15S
The effective corresponding frequency of FA-0112X3 function terminals is 12Hz (evenly distributed)
The effective corresponding frequency of FA-0290X4 function terminal is 90Hz (off)
FA-03130X5 function segment effective corresponding frequency is 130Hz (high drop)
Note: 1. The correspondence between multi-stage speed and washing program and its frequency setting can be modified according to actual functional requirements.
2. The four specific acceleration / deceleration time settings can also be modified according to actual function matching requirements.
The special custom V / F curve function parameters are as follows:
Function code setting value parameter setting description
F4-002V / F curve setting (multi-point V / F)
F4-092.0 torque increased to 2.0%
F4-016V / F frequency 1 is set to 6Hz
F4-0220V / F voltage 1 is set to 25% (380 × 0.25)
F4-0325V / F frequency 2 is set to 25Hz
F4-0450V / F voltage 2 is set to 83% (380 × 0.83)
F4-0550V / F frequency 3 is set to 50Hz
F4-06100V / F voltage 3 is set to 100% (400V)
Note: The customization of the V / F curve is the most critical step in the application and debugging of industrial washing machine inverters. During the debugging process, continuous optimization must be carried out according to the working conditions on site.
(1) The industrial washing machine should be started slowly and smoothly, and the low-frequency starting torque of the inverter should be large.
(2) Pay attention to the slope of the V / F curve. If the slope of each set point of the V / F curve is too large, the operating current will be too large. If the slope is too small, the operation will not start. Therefore, it is necessary to comprehensively grasp the motor and its site.
Attachment: Due to the special process requirements of the fully automatic industrial washing machine, when selecting the inverter, it is generally based on the rated power of the motor equipped with the washing machine.
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