What are the working principles of the weak fire control module and monitoring module?
Output: the host sends the control signal to the O (output) module, the module provides control drive (usually 24VDC signal) to the controlled devices such as shunt tripping device, the intermediate relay (the direct drive circuit breaker tripping in the removal of non fire power supply equipment, the latter by the relay switching / interlock drive fire electrical equipment start).As a fire fighting weak current system, the control of heavy current equipment must include: DC24V power supply, bus, I/O module (intermediate relay need, see drive needs).
Input: the external signal acts on the (input) I module with passive contact (relay contact / split state). The module converts the switch to a fire master, and the received signal is transmitted to the host;
Is a multi line module (switching module), dedicated to the input and output module with the use of field current (DC) switching control and AC 220V equipment starting equipment control, to prevent the use of input and output module directly control equipment will cause dangerous AC power into the control system of bus.
