Master Controller for EOT Crane – Construction & Technical
Master Controller are used for remote operation of contractors equipment controlling EOT Cranes & Rolling mills drives. The controllers are made in dust-proof enclosures in IP-54 degree of protection, up to 6 notches either side with maximum 24 contacts as per the desired sequence with spring return arrangement & Dead man’s handle arrangement are available. And Master Controllers are compact up to 4-0-4 step suitable for Hoist -Grab, CT-LT maximum contacts 16 per motion with spring return arrangement.
Master Controllers are of cam-type where contacts are actuated by individual cams mounted on an operating shaft. These controllers are used for remote operation of contactors equipment controlling heavy-duty E. O. T. cranes & Rolling mill drives.
How the Master Controller is Constructed
The Master Controller is housed in an enclosure and provided with an easily removable cover with ample area for maintenance. The camshaft is mounted on bearing bushes on walls of the housing. The cams are made of Delrin material and fixed on the square.
Dual Master Controller of EOT Cranes
A twin master controller with one universal handle allows a crane operator to control both bridge & trolley motions with one handle. Simultaneous operation of bridge & trolley motions provides for greater spotting accuracy and faster movements of loads. The handle of the joystick can be moved into any quadrant and any position.
Universal controllers are also used for hoist/grab motion. So, Master controllers are coupled with universal joints for the operation of the controller individually/jointly to get the desired motion operation.
|Body Material||Sheet Steel / Aluminium Die Cast|
|Protection Degree||IP-44 / IP-54|
|Confirming to IS||13947 (Part-1) 1993|
|Mounting position||Horizontal / Vertical|
|Contact Material||Silver Cadmium|
|Rated Voltage Insulation||500 V.A.C|
|Thermal Test Current||10 Amps / 40 Amps|
|Cable Entries||2×200, 2×260 Standard conduit|
|Input Speed||1200 RPM, Maximum|
|No. of Contacts||24 Maximum|
|No of Steps||6-0-6 maximum|
|Optional||Spring return/deadman’s handle arrangement|
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