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Revision 8.6
INDEX
1
THYROMAT BD DIGITAL CRANE CONTROLLER
TABLE OF CONTENTS
SECTION
PAGE
1.
GENERAL
1.1.
CONTROL SYSTEM ..................................................................................................................... 6
1.1.1. Basic System Diagram ............................................................................................................. 8
1.1.2. Thyromat Components Identification ....................................................................................... 9
2.
SYSTEM DESIGN
2.1.
GENERAL ................................................................................................................................... 10
2.2.
THYROMAT
– BD DIGITAL CRANE CONTROLLER RANGE ................................................... 10
2.3.
PROTECTION ............................................................................................................................. 12
2.4.
THYROMAT
– BD DIGITAL CRANE CONTROLLER SELECTION ........................................... 12
2.4.1. Standard Duty ........................................................................................................................ 12
2.4.2. Severe Duty (Based on 40% of nominal load permanently on hook) .................................... 13
2.5.
PRINCIPLE OF OPERATION ..................................................................................................... 14
2.5.1. Control Box ............................................................................................................................. 15
2.5.2. Control Card ........................................................................................................................... 15
2.5.3. Relay Card ............................................................................................................................. 16
2.5.4. Phase Shifter Card ................................................................................................................. 16
2.5.5. Snubber Card ......................................................................................................................... 16
2.5.6. Control Panel .......................................................................................................................... 16
2.6.
CONTROL SYSTEM SPECIFICATIONS .................................................................................... 17
2.7.
THYROMAT - BD DIGITAL CRANE CONTROLLER ENCLOSURES ........................................ 18
2.8.
SELECTION OF RESISTORS .................................................................................................... 19
2.9.
SELECTION OF MAINS CIRCUIT BREAKERS ......................................................................... 21
2.10.
SELECTION OF INTERPOSING INPUT RELAYS ..................................................................... 23
2.11.
SELECTION OF INTERPOSING OUTPUT RELAYS ................................................................. 23
2.12.
SELECTION OF CABLES ........................................................................................................... 24
2.12.1. Power Supply Cables ............................................................................................................. 24
2.12.2. Control Supply Cables............................................................................................................ 24
2.13.
SELECTION OF STATOR REVERSING CONTACTORS .......................................................... 24
2.13.1. Contactor Switching Times .................................................................................................... 25
2.13.2 Contactors Drop Out Times ................................................................................................... 25
2.14.
SELECTION OF CURRENT TRANSFORMERS ........................................................................ 25