Building Materials

Auto batching Container type 160tph asphalt hot mix plant with ABB soft starter?

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Description for control system

1.0 Electric control system

Control system of QLB series asphalt mixing equipment is composed of a separate central control room, peripheral connection cable and wire, control room is divided into power distribution part and operation part.

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1.1 Operation room

Operation room is of container structure, whose outer wall uses 2 layers of luxury aluminum alloy buckle, and inner wall uses high class aluminum composite panel, between the outside and inner wall, there is acoustic and thermal insulation material.

Power distribution part and control part of operation room can be divided into 2 separate areas, instead of traditional power cabinets in power distribution area, all electric components are installed directly on inside wall of operation room for easier heat dissipation and maintenance. There are wide-field glass windows at 3 sides of control area for watching running condition of equipment on working site. There are cabinet-air-conditioner in power distribution area and hanging-air-conditioner in control area

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* Dimension:6000mm×2400mm×2500mm(L×W×H)



1.2 Power distribution part

Power distribution part in mainly composed of low voltage electric parts (air breaker, AC contactor, relay, thermorelay), soft starter and frequency converter, etc. , which mainly control all motors, cylinders and air valves of mixing equipments.

Set air switch for main power, and all motors are equipped with air protection switch and overload protection device, insulation class of power is Grade 4, and there are marks at wire terminals.

Big power motor uses soft starter to start smoothly with low current and high efficiency.

Set each branch circuit with trip feedback protection.

All cables of mixing equipment are connected to power distribution room.

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1.3 control system

The system is composed of upward control computer unit (industrial control computer) and downward programming controller (PLC), weighing meter, weighing sensor, frequency converter and low voltage components, and also equipped with keyboard, mouse, monitor and printer, etc. Each unit uses Ethernet terminal port to communicate.

On basis of MCGS (Configuration Software), control system adopts special control software developed specially for asphalt mixing equipment, which can monitor overall running condition from time to time and display on screen in dynamic mode, at the bottom of screen there is formula control icon and prompt line.

The system can automatically finish state control of each work link, namely all control functions required by equipments such as auto batching, over impulse (difference of level) compensation, failure alarm, report form storage and printing.

All function control is protected by computer program against error caused by misoperation.

Control system has fully auto and manual operation function.

UPS power makes voltage of control system stable to prevent impulse voltage caused by power change or self-generation damaging the computer, which will create a safe operation condition for overall control part. When out of electricity, buffer time of power is 15 minutes

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Specification
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QLB Series Asphalt hot mix plant specification table
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Name | Specification |
Model | 600 | 1000 | 1500 | 2000 | 2500 | 3000 |
Production | 48tph | 80tph | 120tph | 160tph | 200tph | 240tph |
Cold feeder volume | 8m3 | 9m3 | 10m | 10m3 | 12 m3 | 12m3 |
Dust collecting type | Gravity drop type and bag filter(air back fluch) |
Fuel type | Diesel/masut/Natural gas? |
Volume/number of hot aggregate bin | 12t/4 | 32t/4 or 5 | 40t/4 or 5 | 50t/5 | 60t/5 | 80t/5 |
Precision of aggregate weighing | Less than ±0.1% | Less than ±0.1% |
Precision of powder weighing | Less than ±0.16% | Less than ±0.16% |
Precision of asphalt weighing | Less than ±0.18% |
Mixing tank ?capacity KG/batch | 600 | 1000 | 1500 | 2000 | 2500 | 3000 |
Volume/number of asphalt storage tank | 10m3/2 | 16m3/2 | 30m3/2 | 30 m3/3 | 50 m3/2 | 50 m3/3 |
Capacity of finished mixture silo(T) | - | 60 | 100 | 120 | 160 |
Installed power(KW) | 185 | 280 | 345 | 470 | 608 | 680 |
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