Modernization of control system for link welding

replacement of the old controller,

replacement of electronics modules and replacement with a controller with a short cycle time,

program processing (to control the spark welding process),

replacement of the old power regulator supplying the welding transformer,

replacement of the measurement system of the travel of the upset bracket,

replacement of the visualization system,

execution of a central SCADA station archiving selected parameters of each welded cell.

Scope of work:
 

design,

software,

commissioning.

Used PLC controllers, terminals, communication, visualization systems:
 

1 S7-315-2 PN / DP central controller,

1 CX9020 Beckhoff technological controller to control the welding process,

distributed structure of inputs / outputs on the site – 1 station on PROFINET in the operator’s panel,

the AEG Thyro-A 1500 power controller with the PROFINET communication module,

KP1200 graphic terminal,

KP300 text terminal,

PROFINET communication,

1 station with a database of selected parameters of each welded cell,

remote access by connecting the controller to the factory Ethernet network.

List of controlled and measuring devices, control devices:
 

250 binary signals,

8 analog signals,

2 program PID controllers,

1 absolute wire draw encoder,

3 servo valves,

30 solenoid valves,

4 pressure measurement systems,

1 flow sensor,

2 temperature measurement systems.

The project consisted of developing complicated software for PLC controllers in order to properly control the operating currents of the frequency converter.
Tests of the control system were executed (PLC + frequency converter software) on the customer’s test tower with a nominal load of 40 tons.
Two projects were completed for a total of 7 vessels. On each ship there were 4 mooring winches and 2 mooring and anchor winches.

Scope of work:
 

design,

prefabrication,

software,

commissioning.

Used PLC controllers, terminals, communication, visualization systems:
 

PLC LS IS controllers, XGT series,

HMI XP10 LS IS panel.

List of controlled and measuring devices, control devices:
 

LS IS iS7 frequency converter,

LS IS LV equipment

In 2015, 9 projects in the field of electrical installation were commenced at the construction of a new copper acquisition block at the KGHM steelworks in Głogów. Within the scope of the company’s work, all 9 projects were:
 

assembly of cable routes,

laying routes of power and control cables,

performance of all required electrical measurements,

connection and checking its’ correctness,

start-up assistance

Scope of work:
 

9 projects – electrical installation works

The team implementing the projects numbered about 70 people. Works on this type of object are non-standard works, carried out at high altitudes. Power cables have been routed in previously prepared cable routes at a height of up to 60 m from ground level. It took one year and was successfully completed on time.