Tenders Are Invited For Reconstruction And Modernization Of The Engine Control System For High Speeds Of A T ... in Bulgaria

Work Detail

The Tow Truck (Wb) In A Shallow Water Basin (Ww) Is Driven By Two Systems. One Is For Low Speeds -0 - 2 M/S, And The Second Is For High Speeds 0.1 - 6 M/S. The Low Speed System Has Two Frequency Controlled Ac Motors. Control Is Digital From A Plc Controller. The Motors Are Mounted On The Axles Of The Front Two Wheels On Both Sides Of The Bc After The Dc Motors Of The High Speed System. The Current High-Speed Shallow Basin (Sw) Electric Tow Truck (Bk) Propulsion System Has Eight Dc Motors And A Digital Control System, Retaining The Relay Blocks And Individual Components Of The Old Analog Control System. The Two Systems Are Connected Through The Relay-Contactor Blocks, And Only One Of Them Works. When A System Is Not Working It Releases Its Motors And Allows The Axes To Rotate Freely From The Other Motors. The Purpose Of The Reconstruction And Modernization Of The Engine Control System For High Speeds Of The Towing Trolley In The Shallow Water Basin Of The Central Railway Station - Varna Is The Introduction Of Fully Digital Control Of The Towing Trolley In The Shallow Water Basin Of The Central Railway Station - Varna. More Details In The Attached Documentation.

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