| Functionsand Characteristics |
|
| Staple structure with convenient extendingand high reliability; |
| With two hot-hosts for mutual redundant; |
| The system has original design and stableperformance and is
convenient for maintenance; |
| PLC is the core equipment of the wholecontrol system and has
intelligent functions and extendableI/O interface. It is compact in
structure, stable and reliablein performance, programmable and
convenient for maintenance; |
| The operation control desk is the operationcenter of the whole
monitoring and control system and is dividedinto three parts:
(1) Control the running ofthe belt conveyor system to make the belt
conveyor control systemwork in automatic or manual mode; control
start and stop ofthe watering machine and operation of broadcasting
alarm system.
(2) Complete the dispatchingand communication mission, ensure the
communication betweencentral control room and the spot unblocked,
to send down orreport various commands timely and correctly, and
ensure thesystem work coordinately.
(3) The industrial television monitoringand control system completes
the image display and videorecordof the monitored spot, picture's
switching and large-screendisplay; |
| The intermediate relay completes signalseparation, level
conversion, drive ability improving and logicalconversion of
operation modes to ensure the automatic controlsystem work more
reasonably and reliably; |
| The start switch case employs vacuumcontactor and has various
protection like short circuit, overcurrent, under voltage and lack
phase; |
| The power distributing cabinet feedspower to PLC cabinet, mimic
board, operation control desk, communicationand industrial
television system, intermediate relay cabinetand belt protection
sensor to ensure the reliable running ofthe system and reduce the
mutual interference. |
| In order to ensure the belt conveyorwork safely and reliably and
adapt to the severe environmentcondition of the port, in order to
protect the belt conveyor,the system uses the sensors with high
quality, stable performanceand good sealing performance; |
| The image of the industrial televisionmonitoring and control system
is arbitrary and switchable. itcan monitor the operation spot and
record the needed image momentarily. |
