The technological line implements the entire production process of fiber and porous boards:
grinding of wood shavings and waste,
addition of additives to the fiber,
fiber packing,
sizing the fiber in a turbocharger,
forming boards,
loading to the dryer, unloading of dried boards,
transporting boards to the sizer,
component management,
dust extraction system,
ventilation and temperature stabilization of the production hall.
Scope of work:
design,
software,
commissioning
Used PLC controllers, terminals, communication, visualization systems:
2 S7-315-2DP and S7-318-2DP central controllers,
distributed structure of inputs / outputs on the site – 7 stations on PROFIBUS DP,
OP37 graphic terminal,
PROFIBUS FMS communication, PROFIBUS DP, MPI, RS485, CANBUS,
2 positions with the PROCON-Win visualization system for production processes.
List of controlled and measuring devices, control devices:
650 binary signals,
40 analog signals,
12 program PID controllers,
31 engines with adjustable speed
110 direct-drive motors
20 control valves
The technological line implements the entire production process of porous boards:
grinding of wood shavings and waste,
preparation of additional components,
preparation and pouring the mass,
mass dehydration and board forming,
board formatting,
loading into a 14-storey dryer, controlling a drying room, unloading of dried plates,
control of the drying room – circulating fans, heat exchangers, temperature control.
transporting boards to and controlling the sizer,
rotary water management,
ventilation of the production hall and stabillization of the temperature
Scope of work:
design,
software,
commissioning
Used PLC controllers, terminals, communication, visualization systems:
1 S7-318-2DP central driver,
distributed structure of inputs / outputs on the site – 18 stations on PROFIBUS DP,
MP270 touch operator terminal,
PROFIBUS DP, CANBUS communication,
3 positions with the WinCC production process visualization system in the wheelhouse,
2 local object positions with the WinCC production process visualization system,
safety functions of the entire thrust implemented with the safety PNOZ MULTI controller.
List of controlled and measuring devices, control devices:
950 binary signals,
60 analog signals and variables,
12 program PID controllers,
86 engines with regulated revolutions,
21 motors controlled by AC servo drives,
18 control valves,
114 direct drive motors,
15 level measurement systems,
6 flow measurement systems,
12 temperature measurement systems,
12 pressure measurement systems,
3 laser thickness measurement systems,
3 measuring systems of moisture and concentration of cellulose fibers.
Dust extraction and dust transporting system for dust burners in the EC:
11 fans with a total power of 380KW,
rotation control of all fans and scrolls,
analog control of transport air flow velocity in pipes,
3 filters with pressure measurement,
1 dust container with layer measurement and a rotary scraper with hydraulic drive and a wiping screw on the inverter,
two-directional screw conveyors with clogging control,
transport of dust from tanks to EC by means of two fans operated in parallel regulated by inverters,
dust supply and control of 2 dust burners in two EC furnaces,
GRECON spark extinguishing system,
6 ppo flaps,
dusting operation in 2- WINTER-SUMMER modes (with or without heat recovery).
Scope of work:
design,
software,
commissioning
Used PLC controllers, terminals, communication, visualization systems:
1 S7-315 2DP central driver,
distributed structure of inputs / outputs – 4 stations on PROFIBUS DP,
4 MP270 touch graphic terminals on the PROFIBUS DP network,
communication – PROFIBUS DP,
2 stations with a dust collection and visualization system for the dust and WinCC burner operation.
List of controlled and measuring devices, control devices:
210 binary signals,
31 analog signals,
5 motors with adjustable speed inverter,
3 right-left engines,
9 motors with softstarter or D / Y start,
7 level measurements,
4 motors with direct start,
3 pressure measurement systems,
3 air flow speed measurement systems,
2 temperature measurement systems in furnaces,
9 current measurement systems,
cooperation with the Grecon fire brigade.
Technological line designed to prepare the raw material for the LVL production line:
preparation of basins (LogPonds) for soaking logs,
maintaining a proper level of water in water basin,
maintaining the set temperature in water basins,
soaking and transporting logs in basins through time-related technology,
maintaining proper water quality through the use of sewage treatment plants,
heating water using the heat recovered from the dryer,
Scope of work:
design,
software,
commissioning
Used PLC controllers, terminals, communication, visualization systems:
1 S7-317-2 PN / DP central controller,
CP 343-1 communication processor,
2 PROFIBUS gates – PROFIBUS DP / PROFIBUS D coupler,
1 PROFINET gate – PROFINET / PROFINET coupler,
distributed structure of inputs / outputs on the site – 6 stations on PROFIBUS DP on the site,
AC LS IS7 drives with communication card, controlled via PROFIBUS DP,
1 post with the SCADA WINCC system,
remote access to the PLC and operator station,
List of controlled and measuring devices, control devices:
480 binary signals,
80 analog signals,
4 software PID controllers,
14 engines with adjustable revolutions,
20 motors with direct drive,
40 temperature measurement systems,
15 pressure measurement systems,
4 humidity measurement system.
