EDWARDS Fire Protection

All hosts within the Edward alarm system form a network through network modules. The RS485 standard communication method is used between hosts and hosts, as well as between hosts and network devices, to form a Peer to Peer ownerless peer-to-peer network through network communication modules. The network structure is a ring structure.

Introduction to Edward Alarm EST Alarm Host

Adopting the EST3 fire alarm controller from Edward Company in the United States. Each module adopts an internal track assembly method, and the internal track communication adopts a fast broadcast communication protocol. An independent module space can accommodate 5 to 21 modules, sufficient to install 4 power supplies to provide 4 x 24V/7A external control power output. It can support 10 loop controllers and provide 2500 points. Can configure sound and light alarm circuits, and install 19 linkage control display switch boards and a main LCD display screen. The chassis is made of cold rolled steel plate, sprayed with gray porcelain paint and treated with baking paint. The chassis door is also made of steel plate, with a modern curved shape and an observation window.

All hosts within the system form a network through network modules. The RS485 standard communication method is used between hosts and hosts, as well as between hosts and network devices, to form a Peer to Peer ownerless peer-to-peer network through network communication modules. The network structure is a ring structure. In a network, one EST3 controller corresponds to one node, and a single circular network can have up to 64 nodes. Network nodes can be connected through RS485, fiber optics, and other methods. When using 1.0 or 1.5 square millimeter twisted pair cables, the networking distance between nodes can reach 1.5 kilometers; When using single-mode fiber optic cable low drive (high drive) interface, the communication distance is 14 (40) kilometers.