General information:
Automated control system of sewage installation .
Functions:
- technological parameters continuous control and measuring;
- control of equipment state position signals;
- display of technological process and equipment state;
- automatic indication, display and audible signal of parameters divergence from set values;
- history data of technological parameters, equipment state and operator activiites during 3 months;
- shift reports;
- indication of emergencies (according to warning and emergency shooting algorithms);
- control of process equipment (according to warning and emergency shooting algorithms);
- regulation of cellulose sheets delivery speed;
- regulation of temperature (cooling) in alkaline reservoir;
- regulation of temperature (cooling) in pulp reservoir;
- regulation of level in pulp reservoir;
- regulation of pressure behind soda-circulating pumps;
- regulation of alkaline cellulose temperature (cooling) in mercerizer;
- regulation of alkaline cellulose density in mercerizer;
- regulation of level in alkaline cellulose tank;
- regulation of CSS temperature (heating) at maturing tank outlet;
- regulation of air temperature (heating) at drying device inlet;
- regulation of CSS temperature (heating) at drying device outlet;
- regulation of depression in drying device;
- control of soft-, hardware and communication buses operability;
- control of input/output analogue circuits integrity;
- control of input/output discrete circuits integrity.
Process equipment
Technical solutions:
Control system software is PLC GE Fanuc VersaMax - based. PLC has embedded Ethernet port for connection with operator workstation and 2 serial ports for Mod bus RTU connection with 13 Danfoss drives.
PLC modules configuration provides:
- input discrete signals -29;
- input analogue signals (4..20)mA - 8;
- output discrete control signals - 13;
- output analogue control signals (4. .20)mA - 2.
Industrial PC with Microsoft Windows and Proficy HMI/SCADA CIMPLICITY is used as operator workstation.
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