Transportation and grinding of wet wood chips into sawdust, transportation of wet sawdust to the container, scraping of wet sawdust from the container and dosing it into the dryer, Control of the drying process while maintaining the parameters of the finished raw material Transportation of dry sawdust to the container, scraping of dry sawdust from the container, and transport to the dry mill Transport of ground sawdust to the conditioner and conditioning of the raw material, Dosing steam into the sawdust and pressing with full control of the pressing process technology Transport of pellets to the cooler and then to the finished product container, Feeding to scales and packers.
Scope of work:
project,
software,
Initiation,
Applied PLC controllers, terminals, communication, visualization systems:
1 central controller S7-317 2DP with 1 communication processor CP 342,”
Distributed input/output structure – 12 ET200S stations on PROFIBUS DP,
2 operator stations SCADA with 4 monitors on PROFIBUS DP network,
PROFIBUS DP communication
List of controlled and measurement devices, control devices:
600 binary,
40 analog signals,
15 motors with adjustable speed via inverters,
5 right-left motors,
60 motors with direct start
5 solenoid valves
8 motors with soft start or star-delta (D/Y) starting,
3 analog level measurement systems
4 binary level measurement systems
3 analog valves,
3 pressure measurement systems,
15 temperature measurement systems,
3 humidity measurement systems,
5-10 current measurement systems
Cooperation with the fire suppression control panel
Cooperation with a gas or oil burner.
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