Terminal zone relay for Linden Comansa 21LC750/36t

The terminal zone relay acts as a critical electrical control device within the tower crane safety system. Its primary function involves monitoring and restricting the movement of specific crane components, such as the trolley or jib, to ensure they do not exceed pre-established operational boundaries. By detecting when a component approaches or reaches a designated limit, the relay triggers a signal or interrupts the circuit to prevent collisions and maintain structural stability during operation.

This component is specifically configured for the Linden Comansa 21LC750/36t tower crane. It manages the horizontal reach limits of the trolley, the hook height limits, and the jib rotation limits. Proper integration of this relay allows the crane control system to prevent interference with adjacent structures and maintain safe load handling capabilities. Terminal zone relays are typically integrated into the wider crane control architecture, often interfacing with a programmable logic controller to manage complex movement sequences and safety interlocks.