CONTROL OF COKING PLANT KB11Customer: T,a.s.Tøinec
Czech Republik
Hardware equipment: FW-10 (SAE Electronic Germany)
Radio
stations FK105 (GRUNDIG Japan)
Technological
display KA-80 (SAE)
IRCīs
(Incremental Rotary Coder) for sensing of the pushing-in and pushing-out holes
Sensing
heads for co-ordinating of the carriages to the axes and number of the cells
Control processors: CPU Z80
Realisation: October 1993
Characteristics of the system:
Distributed control system provides control of
technology and co-operation of the service carriages (Pushing, Regulating, Ceiling and
Fire carriages) and surveillance system at the coking plant with the pushing working - in
two modes: automation and monitor. PLC systems communicate with the surveillance system
via radio frequency in pooling system. PLCīs provide control functions and safety
functions, too, during process of either pushing in of the cold pressed cube of milling
black coal dust or pushing out red hot coke. Surveillance PLC is connected to the
surveillance computer system of coking plant.
Additional capabilities of the control system:
- each service carriage moves on the track and is equipped by control system for
technology control and another control
system for position evaluating of the carriage at the cell of coking plant
- pushing carriage is additionally equipped by control system for position sensing of
service push in and push out holes
from IRCīs
- there are radio stations plugged into PLCīs in surveillance system and the carriages,
too, for radio frequency data
communication of control and status commands
- there are technological displays plugged into PLCīs to display technological commands
and status messages in the
cabin of a mechanic
- surveillance PLC is equipped by radio station and serial line RS232 for connection to
superior computer microVAX
- process control in automatic mode from the centre based on schedule for four cells
together with blocking of the
carriages at the cell. Schedule is composed in superior computer.
- monitoring of the work in process for the proposal of making records in the superior
computer in monitor mode
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