ILMU AUTOMATION

What is specific for this control system is that it has been carried out in Ex realization. The system consists of Omron Touch panel 12’’ certified for Ex and control part, in which Omron PLC CJ series with two OMRON frequency invertors are placed. The control part is physically distanced from filler itself, and signals arrive and leave over Ex barrier. Also, the system is specific by the fact that servo drive is not used. Instead a classical (asynchronous motor and frequency inverter) used, contributed to lower the costs of entire system.

The control system has two basic operating modes: maintenance and automatic. In maintenance mode, basic system parameters adjustment is performed and faultiness is tested, while in automatic, there are two main modes: filling and washing. The system is completely freely configurable, both in mechanical and software sense – it has filling nozzles flexibility in each direction and sizes, while it can memorize up to 5000 recipes, or types of filling.

System performances depend on the type and quantity of material that is poured into bottle and can vary between 1000 to 3000 bottles per hour. Dosage precision is 0.1g and dosage error is below 1%. The system has an algorythm for dosage error autocorrecting as well as the ability to configure each nozzle independently. The display system for monitoring the filling allows two modes of monitoring: professional – it contains all measurements and calculations in tabular form and engineering – it contains the picture and algorythm of execution sequences. First regime is designated to operators in daily job execution, while the second one is designated to engineers during maintenance when certain problem exists.

The system also possesses a program for system washing with 5 options and operates according to time set or manually in dependence of washing type.

With this system productivity increase is possible, while reducing investments during machine purchasing. It was prior procured from abroad and was put together with components hardly available and difficult for maintenance.

Capability to finely position the limiter, in order to perform precise plate cutting to specified proportion.

Possibility to define different angles of cutting.

Possibility to adjusting the cutting duration, thus adapting to plate's thickness that is being cut.

Hydraulic pump and electro magnetic valve, limiter's electro motor drive

Scissors, limiter

Technologic process description

When the machine is switched on, the first task performed is limiter's reference point locating, in accordance to which the cutting measure is defined; the coordinate value of the reference point can be modified on the operator's panel.
Over the operator panel, the cutting angle can be defined. It is possible to select one of five previously defined angles. The value of an angle is expressed by, time necessary for the two hydraulic cylinders that carry the cutting knife, to take a specific mutual position, which corresponds to the defined angle. The time can be modified on the operator's panel.
Over the operator's panel, the cutting time duration can be defined, taking into account the thickness of the plate being cut.
Sheet metal is placed onto machine; by manual buttons for rough and fine positioning the cutting dimension is determined (limiter positioning), whereby the achieved dimension is monitored on the operator panel.
The foot pedal issues the cutting command.

System's elements description

On panel, its possible to perform input and modification of limiter's referent point coordinates. During referent point searching and cutting dimensions setting, the instant position is shown on display

On panel, it is possible to enter time that corresponds to certain cutting angle. It is also possible to define the cutting angle

On panel, the cutting time duration can be defined, taking into consideration the plate's thickn